./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/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_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/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 64bit --witnessprinter.graph.data.programhash c9458c11c88f349e1ca0bb9d4b975cefb238063fab6b2af878cb463f72770ad9 --- 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 21:07:51,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:07:51,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:07:51,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:07:51,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:07:51,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:07:51,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:07:51,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:07:51,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:07:51,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:07:51,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:07:51,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:07:51,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:07:51,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:07:51,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:07:51,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:07:51,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:07:51,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:07:51,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:07:51,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:07:51,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:07:51,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:07:51,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:07:51,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:07:51,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:07:51,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:07:51,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:07:51,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:07:51,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:07:51,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:07:51,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:07:51,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:07:51,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:07:51,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:07:51,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:07:51,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:07:51,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:07:51,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:07:51,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:07:51,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:07:51,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:07:51,875 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 21:07:51,915 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:07:51,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:07:51,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:07:51,917 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:07:51,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:07:51,918 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:07:51,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:07:51,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:07:51,919 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:07:51,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:07:51,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:07:51,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:07:51,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:07:51,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:07:51,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:07:51,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:07:51,922 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:07:51,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:07:51,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:07:51,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:07:51,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:07:51,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:07:51,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:07:51,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:07:51,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:07:51,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:07:51,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:07:51,926 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:07:51,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:07:51,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:07:51,928 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_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9458c11c88f349e1ca0bb9d4b975cefb238063fab6b2af878cb463f72770ad9 [2022-11-02 21:07:52,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:07:52,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:07:52,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:07:52,254 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:07:52,256 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:07:52,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c [2022-11-02 21:07:52,354 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/data/02683d568/589b85109f3a4a879ec37a583d91162b/FLAG567cfd61c [2022-11-02 21:07:52,954 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:07:52,957 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c [2022-11-02 21:07:52,977 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/data/02683d568/589b85109f3a4a879ec37a583d91162b/FLAG567cfd61c [2022-11-02 21:07:53,185 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/data/02683d568/589b85109f3a4a879ec37a583d91162b [2022-11-02 21:07:53,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:07:53,192 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:07:53,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:53,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:07:53,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:07:53,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:53" (1/1) ... [2022-11-02 21:07:53,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f9f5b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:53, skipping insertion in model container [2022-11-02 21:07:53,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:53" (1/1) ... [2022-11-02 21:07:53,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:07:53,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:07:53,555 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_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c[1014,1027] [2022-11-02 21:07:53,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:53,939 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:07:53,950 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_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c[1014,1027] [2022-11-02 21:07:54,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:54,185 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:07:54,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:54 WrapperNode [2022-11-02 21:07:54,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:54,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:54,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:07:54,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:07:54,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:54" (1/1) ... [2022-11-02 21:07:54,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:54" (1/1) ... [2022-11-02 21:07:54,474 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1655 [2022-11-02 21:07:54,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:54,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:07:54,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:07:54,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:07:54,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:54" (1/1) ... [2022-11-02 21:07:54,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:54" (1/1) ... [2022-11-02 21:07:54,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:54" (1/1) ... [2022-11-02 21:07:54,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:54" (1/1) ... [2022-11-02 21:07:54,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:54" (1/1) ... [2022-11-02 21:07:54,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:54" (1/1) ... [2022-11-02 21:07:54,684 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:54" (1/1) ... [2022-11-02 21:07:54,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:54" (1/1) ... [2022-11-02 21:07:54,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:07:54,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:07:54,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:07:54,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:07:54,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:54" (1/1) ... [2022-11-02 21:07:54,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:07:54,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:54,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:54,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:07:54,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:07:54,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:07:55,273 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:07:55,275 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:08:16,970 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:08:16,980 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:08:16,981 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:08:16,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:08:16 BoogieIcfgContainer [2022-11-02 21:08:16,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:08:16,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:08:16,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:08:16,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:08:16,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:07:53" (1/3) ... [2022-11-02 21:08:16,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf7e8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:08:16, skipping insertion in model container [2022-11-02 21:08:16,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:54" (2/3) ... [2022-11-02 21:08:16,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf7e8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:08:16, skipping insertion in model container [2022-11-02 21:08:16,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:08:16" (3/3) ... [2022-11-02 21:08:16,994 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.peterson.3.prop1-func-interl.c [2022-11-02 21:08:17,013 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:08:17,014 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:08:17,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:08:17,094 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;@315b0ad1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:08:17,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:08:17,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 94 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:17,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:08:17,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:17,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:17,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:17,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:17,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1473645707, now seen corresponding path program 1 times [2022-11-02 21:08:17,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:17,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11056612] [2022-11-02 21:08:17,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:17,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,980 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 21:08:17,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:17,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11056612] [2022-11-02 21:08:17,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11056612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:17,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:17,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:08:17,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883996478] [2022-11-02 21:08:17,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:17,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:08:17,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:18,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:08:18,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:08:18,038 INFO L87 Difference]: Start difference. First operand has 95 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 94 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:21,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:08:21,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:21,574 INFO L93 Difference]: Finished difference Result 273 states and 407 transitions. [2022-11-02 21:08:21,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:08:21,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 21:08:21,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:21,591 INFO L225 Difference]: With dead ends: 273 [2022-11-02 21:08:21,591 INFO L226 Difference]: Without dead ends: 180 [2022-11-02 21:08:21,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:08:21,598 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 257 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:21,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 384 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-11-02 21:08:21,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-02 21:08:21,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 93. [2022-11-02 21:08:21,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4673913043478262) internal successors, (135), 92 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:21,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 135 transitions. [2022-11-02 21:08:21,641 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 135 transitions. Word has length 11 [2022-11-02 21:08:21,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:21,642 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 135 transitions. [2022-11-02 21:08:21,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:21,643 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 135 transitions. [2022-11-02 21:08:21,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:08:21,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:21,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:21,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:08:21,644 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:21,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:21,645 INFO L85 PathProgramCache]: Analyzing trace with hash 2011974963, now seen corresponding path program 1 times [2022-11-02 21:08:21,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:21,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890837517] [2022-11-02 21:08:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:21,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:21,914 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 21:08:21,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:21,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890837517] [2022-11-02 21:08:21,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890837517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:21,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:21,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:08:21,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126474329] [2022-11-02 21:08:21,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:21,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:08:21,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:21,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:08:21,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:08:21,923 INFO L87 Difference]: Start difference. First operand 93 states and 135 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:24,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:08:25,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:25,714 INFO L93 Difference]: Finished difference Result 269 states and 394 transitions. [2022-11-02 21:08:25,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:08:25,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 21:08:25,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:25,721 INFO L225 Difference]: With dead ends: 269 [2022-11-02 21:08:25,721 INFO L226 Difference]: Without dead ends: 180 [2022-11-02 21:08:25,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:08:25,723 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 251 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:25,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 384 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-11-02 21:08:25,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-02 21:08:25,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 95. [2022-11-02 21:08:25,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.4574468085106382) internal successors, (137), 94 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:25,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 137 transitions. [2022-11-02 21:08:25,734 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 137 transitions. Word has length 11 [2022-11-02 21:08:25,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:25,735 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 137 transitions. [2022-11-02 21:08:25,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:25,735 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 137 transitions. [2022-11-02 21:08:25,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:08:25,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:25,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:25,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:08:25,736 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:25,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:25,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2069233265, now seen corresponding path program 1 times [2022-11-02 21:08:25,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:25,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072401675] [2022-11-02 21:08:25,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:25,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:25,952 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 21:08:25,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:25,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072401675] [2022-11-02 21:08:25,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072401675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:25,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:25,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:08:25,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593026128] [2022-11-02 21:08:25,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:25,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:08:25,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:25,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:08:25,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:08:25,956 INFO L87 Difference]: Start difference. First operand 95 states and 137 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:28,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:08:30,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:08:31,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:31,164 INFO L93 Difference]: Finished difference Result 274 states and 400 transitions. [2022-11-02 21:08:31,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:08:31,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 21:08:31,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:31,176 INFO L225 Difference]: With dead ends: 274 [2022-11-02 21:08:31,176 INFO L226 Difference]: Without dead ends: 185 [2022-11-02 21:08:31,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:08:31,178 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 251 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:31,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 392 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-02 21:08:31,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-02 21:08:31,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 97. [2022-11-02 21:08:31,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.4479166666666667) internal successors, (139), 96 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:31,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 139 transitions. [2022-11-02 21:08:31,190 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 139 transitions. Word has length 11 [2022-11-02 21:08:31,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:31,191 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 139 transitions. [2022-11-02 21:08:31,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:31,191 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 139 transitions. [2022-11-02 21:08:31,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:08:31,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:31,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:31,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:08:31,192 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:31,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:31,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2069292847, now seen corresponding path program 1 times [2022-11-02 21:08:31,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:31,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456035506] [2022-11-02 21:08:31,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:31,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:08:31,443 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:08:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:08:31,718 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:08:31,718 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:08:31,720 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:08:31,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:08:31,726 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-02 21:08:31,732 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:08:31,783 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 21:08:31,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:08:31 BoogieIcfgContainer [2022-11-02 21:08:31,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:08:31,819 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:08:31,819 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:08:31,819 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:08:31,820 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:08:16" (3/4) ... [2022-11-02 21:08:31,824 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:08:31,824 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:08:31,825 INFO L158 Benchmark]: Toolchain (without parser) took 38633.10ms. Allocated memory was 96.5MB in the beginning and 868.2MB in the end (delta: 771.8MB). Free memory was 60.6MB in the beginning and 551.4MB in the end (delta: -490.8MB). Peak memory consumption was 280.5MB. Max. memory is 16.1GB. [2022-11-02 21:08:31,825 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 96.5MB. Free memory was 49.4MB in the beginning and 49.3MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:08:31,827 INFO L158 Benchmark]: CACSL2BoogieTranslator took 991.14ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 60.4MB in the beginning and 90.4MB in the end (delta: -30.0MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. [2022-11-02 21:08:31,828 INFO L158 Benchmark]: Boogie Procedure Inliner took 288.06ms. Allocated memory is still 130.0MB. Free memory was 90.4MB in the beginning and 76.4MB in the end (delta: 14.0MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. [2022-11-02 21:08:31,828 INFO L158 Benchmark]: Boogie Preprocessor took 259.44ms. Allocated memory was 130.0MB in the beginning and 207.6MB in the end (delta: 77.6MB). Free memory was 76.4MB in the beginning and 144.2MB in the end (delta: -67.8MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2022-11-02 21:08:31,829 INFO L158 Benchmark]: RCFGBuilder took 22248.58ms. Allocated memory was 207.6MB in the beginning and 868.2MB in the end (delta: 660.6MB). Free memory was 143.3MB in the beginning and 378.2MB in the end (delta: -234.9MB). Peak memory consumption was 524.9MB. Max. memory is 16.1GB. [2022-11-02 21:08:31,829 INFO L158 Benchmark]: TraceAbstraction took 14832.19ms. Allocated memory is still 868.2MB. Free memory was 377.2MB in the beginning and 551.4MB in the end (delta: -174.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:08:31,830 INFO L158 Benchmark]: Witness Printer took 4.98ms. Allocated memory is still 868.2MB. Free memory is still 551.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:08:31,832 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 96.5MB. Free memory was 49.4MB in the beginning and 49.3MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 991.14ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 60.4MB in the beginning and 90.4MB in the end (delta: -30.0MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 288.06ms. Allocated memory is still 130.0MB. Free memory was 90.4MB in the beginning and 76.4MB in the end (delta: 14.0MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 259.44ms. Allocated memory was 130.0MB in the beginning and 207.6MB in the end (delta: 77.6MB). Free memory was 76.4MB in the beginning and 144.2MB in the end (delta: -67.8MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. * RCFGBuilder took 22248.58ms. Allocated memory was 207.6MB in the beginning and 868.2MB in the end (delta: 660.6MB). Free memory was 143.3MB in the beginning and 378.2MB in the end (delta: -234.9MB). Peak memory consumption was 524.9MB. Max. memory is 16.1GB. * TraceAbstraction took 14832.19ms. Allocated memory is still 868.2MB. Free memory was 377.2MB in the beginning and 551.4MB in the end (delta: -174.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.98ms. Allocated memory is still 868.2MB. Free memory is still 551.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 221, overapproximation of bitwiseAnd at line 217. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_30 = 0; [L39] const SORT_4 var_63 = 1; [L40] const SORT_4 var_64 = 0; [L41] const SORT_2 var_74 = 0; [L42] const SORT_3 var_90 = 0; [L43] const SORT_2 var_95 = 2; [L44] const SORT_2 var_101 = 1; [L45] const SORT_4 var_121 = 2; [L46] const SORT_4 var_229 = 3; [L47] const SORT_2 var_251 = 3; [L49] SORT_1 input_73; [L50] SORT_1 input_75; [L51] SORT_1 input_79; [L52] SORT_1 input_80; [L53] SORT_1 input_84; [L54] SORT_1 input_85; [L55] SORT_1 input_89; [L56] SORT_1 input_96; [L57] SORT_1 input_102; [L58] SORT_1 input_132; [L59] SORT_1 input_135; [L60] SORT_1 input_139; [L61] SORT_1 input_146; [L62] SORT_1 input_149; [L63] SORT_1 input_153; [L64] SORT_1 input_160; [L65] SORT_1 input_163; [L66] SORT_1 input_167; [L67] SORT_1 input_177; [L68] SORT_1 input_195; [L69] SORT_1 input_213; [L71] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L74] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L75] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L76] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L77] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L78] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L79] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L80] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L81] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L82] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L83] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_2 init_7_arg_1 = var_5; [L101] state_6 = init_7_arg_1 [L102] SORT_2 init_9_arg_1 = var_5; [L103] state_8 = init_9_arg_1 [L104] SORT_2 init_11_arg_1 = var_5; [L105] state_10 = init_11_arg_1 [L106] SORT_2 init_13_arg_1 = var_5; [L107] state_12 = init_13_arg_1 [L108] SORT_2 init_15_arg_1 = var_5; [L109] state_14 = init_15_arg_1 [L110] SORT_2 init_17_arg_1 = var_5; [L111] state_16 = init_17_arg_1 [L112] SORT_2 init_19_arg_1 = var_5; [L113] state_18 = init_19_arg_1 [L114] SORT_2 init_21_arg_1 = var_5; [L115] state_20 = init_21_arg_1 [L116] SORT_2 init_23_arg_1 = var_5; [L117] state_22 = init_23_arg_1 [L118] SORT_2 init_25_arg_1 = var_5; [L119] state_24 = init_25_arg_1 [L120] SORT_2 init_27_arg_1 = var_5; [L121] state_26 = init_27_arg_1 [L122] SORT_2 init_29_arg_1 = var_5; [L123] state_28 = init_29_arg_1 [L124] SORT_1 init_32_arg_1 = var_30; [L125] state_31 = init_32_arg_1 [L126] SORT_1 init_34_arg_1 = var_30; [L127] state_33 = init_34_arg_1 [L128] SORT_1 init_36_arg_1 = var_30; [L129] state_35 = init_36_arg_1 [L130] SORT_1 init_38_arg_1 = var_30; [L131] state_37 = init_38_arg_1 [L132] SORT_1 init_40_arg_1 = var_30; [L133] state_39 = init_40_arg_1 [L134] SORT_1 init_42_arg_1 = var_30; [L135] state_41 = init_42_arg_1 [L136] SORT_1 init_44_arg_1 = var_30; [L137] state_43 = init_44_arg_1 [L138] SORT_1 init_46_arg_1 = var_30; [L139] state_45 = init_46_arg_1 [L140] SORT_1 init_48_arg_1 = var_30; [L141] state_47 = init_48_arg_1 [L142] SORT_1 init_50_arg_1 = var_30; [L143] state_49 = init_50_arg_1 [L144] SORT_1 init_52_arg_1 = var_30; [L145] state_51 = init_52_arg_1 [L146] SORT_1 init_54_arg_1 = var_30; [L147] state_53 = init_54_arg_1 [L148] SORT_1 init_56_arg_1 = var_30; [L149] state_55 = init_56_arg_1 [L150] SORT_1 init_58_arg_1 = var_30; [L151] state_57 = init_58_arg_1 [L152] SORT_1 init_60_arg_1 = var_30; [L153] state_59 = init_60_arg_1 [L154] SORT_1 init_62_arg_1 = var_30; [L155] state_61 = init_62_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_8=0, var_101=1, var_121=2, var_229=3, var_251=3, var_30=0, var_5=0, var_63=1, var_64=0, var_74=0, var_90=0, var_95=2] [L158] input_73 = __VERIFIER_nondet_uchar() [L159] input_73 = input_73 & mask_SORT_1 [L160] input_75 = __VERIFIER_nondet_uchar() [L161] input_75 = input_75 & mask_SORT_1 [L162] input_79 = __VERIFIER_nondet_uchar() [L163] input_79 = input_79 & mask_SORT_1 [L164] input_80 = __VERIFIER_nondet_uchar() [L165] input_80 = input_80 & mask_SORT_1 [L166] input_84 = __VERIFIER_nondet_uchar() [L167] input_84 = input_84 & mask_SORT_1 [L168] input_85 = __VERIFIER_nondet_uchar() [L169] input_85 = input_85 & mask_SORT_1 [L170] input_89 = __VERIFIER_nondet_uchar() [L171] input_89 = input_89 & mask_SORT_1 [L172] input_96 = __VERIFIER_nondet_uchar() [L173] input_96 = input_96 & mask_SORT_1 [L174] input_102 = __VERIFIER_nondet_uchar() [L175] input_102 = input_102 & mask_SORT_1 [L176] input_132 = __VERIFIER_nondet_uchar() [L177] input_132 = input_132 & mask_SORT_1 [L178] input_135 = __VERIFIER_nondet_uchar() [L179] input_135 = input_135 & mask_SORT_1 [L180] input_139 = __VERIFIER_nondet_uchar() [L181] input_139 = input_139 & mask_SORT_1 [L182] input_146 = __VERIFIER_nondet_uchar() [L183] input_146 = input_146 & mask_SORT_1 [L184] input_149 = __VERIFIER_nondet_uchar() [L185] input_149 = input_149 & mask_SORT_1 [L186] input_153 = __VERIFIER_nondet_uchar() [L187] input_153 = input_153 & mask_SORT_1 [L188] input_160 = __VERIFIER_nondet_uchar() [L189] input_160 = input_160 & mask_SORT_1 [L190] input_163 = __VERIFIER_nondet_uchar() [L191] input_163 = input_163 & mask_SORT_1 [L192] input_167 = __VERIFIER_nondet_uchar() [L193] input_167 = input_167 & mask_SORT_1 [L194] input_177 = __VERIFIER_nondet_uchar() [L195] input_195 = __VERIFIER_nondet_uchar() [L196] input_213 = __VERIFIER_nondet_uchar() [L199] SORT_1 var_65_arg_0 = state_33; [L200] SORT_4 var_65_arg_1 = var_63; [L201] SORT_4 var_65_arg_2 = var_64; VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, input_102=0, input_132=0, input_135=1, input_139=1, input_146=0, input_149=1, input_153=0, input_160=0, input_163=0, input_167=0, input_177=3, input_195=1, input_213=2, input_73=1, input_75=0, input_79=1, input_80=0, input_84=0, input_85=1, input_89=0, input_96=1, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_8=0, var_101=1, var_121=2, var_229=3, var_251=3, var_30=0, var_5=0, var_63=1, var_64=0, var_65_arg_0=0, var_65_arg_1=1, var_65_arg_2=0, var_74=0, var_90=0, var_95=2] [L202] EXPR var_65_arg_0 ? var_65_arg_1 : var_65_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, input_102=0, input_132=0, input_135=1, input_139=1, input_146=0, input_149=1, input_153=0, input_160=0, input_163=0, input_167=0, input_177=3, input_195=1, input_213=2, input_73=1, input_75=0, input_79=1, input_80=0, input_84=0, input_85=1, input_89=0, input_96=1, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_8=0, var_101=1, var_121=2, var_229=3, var_251=3, var_30=0, var_5=0, var_63=1, var_64=0, var_65_arg_0=0, var_65_arg_0 ? var_65_arg_1 : var_65_arg_2=0, var_65_arg_1=1, var_65_arg_2=0, var_74=0, var_90=0, var_95=2] [L202] SORT_4 var_65 = var_65_arg_0 ? var_65_arg_1 : var_65_arg_2; [L203] SORT_1 var_66_arg_0 = state_43; [L204] SORT_4 var_66_arg_1 = var_63; [L205] SORT_4 var_66_arg_2 = var_64; VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, input_102=0, input_132=0, input_135=1, input_139=1, input_146=0, input_149=1, input_153=0, input_160=0, input_163=0, input_167=0, input_177=3, input_195=1, input_213=2, input_73=1, input_75=0, input_79=1, input_80=0, input_84=0, input_85=1, input_89=0, input_96=1, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_8=0, var_101=1, var_121=2, var_229=3, var_251=3, var_30=0, var_5=0, var_63=1, var_64=0, var_65=0, var_65_arg_0=0, var_65_arg_1=1, var_65_arg_2=0, var_66_arg_0=0, var_66_arg_1=1, var_66_arg_2=0, var_74=0, var_90=0, var_95=2] [L206] EXPR var_66_arg_0 ? var_66_arg_1 : var_66_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, input_102=0, input_132=0, input_135=1, input_139=1, input_146=0, input_149=1, input_153=0, input_160=0, input_163=0, input_167=0, input_177=3, input_195=1, input_213=2, input_73=1, input_75=0, input_79=1, input_80=0, input_84=0, input_85=1, input_89=0, input_96=1, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_8=0, var_101=1, var_121=2, var_229=3, var_251=3, var_30=0, var_5=0, var_63=1, var_64=0, var_65=0, var_65_arg_0=0, var_65_arg_1=1, var_65_arg_2=0, var_66_arg_0=0, var_66_arg_0 ? var_66_arg_1 : var_66_arg_2=0, var_66_arg_1=1, var_66_arg_2=0, var_74=0, var_90=0, var_95=2] [L206] SORT_4 var_66 = var_66_arg_0 ? var_66_arg_1 : var_66_arg_2; [L207] SORT_4 var_67_arg_0 = var_65; [L208] SORT_4 var_67_arg_1 = var_66; [L209] SORT_4 var_67 = var_67_arg_0 + var_67_arg_1; [L210] SORT_1 var_68_arg_0 = state_53; [L211] SORT_4 var_68_arg_1 = var_63; [L212] SORT_4 var_68_arg_2 = var_64; VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, input_102=0, input_132=0, input_135=1, input_139=1, input_146=0, input_149=1, input_153=0, input_160=0, input_163=0, input_167=0, input_177=3, input_195=1, input_213=2, input_73=1, input_75=0, input_79=1, input_80=0, input_84=0, input_85=1, input_89=0, input_96=1, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_8=0, var_101=1, var_121=2, var_229=3, var_251=3, var_30=0, var_5=0, var_63=1, var_64=0, var_65=0, var_65_arg_0=0, var_65_arg_1=1, var_65_arg_2=0, var_66=0, var_66_arg_0=0, var_66_arg_1=1, var_66_arg_2=0, var_67=0, var_67_arg_0=0, var_67_arg_1=0, var_68_arg_0=0, var_68_arg_1=1, var_68_arg_2=0, var_74=0, var_90=0, var_95=2] [L213] EXPR var_68_arg_0 ? var_68_arg_1 : var_68_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, input_102=0, input_132=0, input_135=1, input_139=1, input_146=0, input_149=1, input_153=0, input_160=0, input_163=0, input_167=0, input_177=3, input_195=1, input_213=2, input_73=1, input_75=0, input_79=1, input_80=0, input_84=0, input_85=1, input_89=0, input_96=1, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_8=0, var_101=1, var_121=2, var_229=3, var_251=3, var_30=0, var_5=0, var_63=1, var_64=0, var_65=0, var_65_arg_0=0, var_65_arg_1=1, var_65_arg_2=0, var_66=0, var_66_arg_0=0, var_66_arg_1=1, var_66_arg_2=0, var_67=0, var_67_arg_0=0, var_67_arg_1=0, var_68_arg_0=0, var_68_arg_0 ? var_68_arg_1 : var_68_arg_2=0, var_68_arg_1=1, var_68_arg_2=0, var_74=0, var_90=0, var_95=2] [L213] SORT_4 var_68 = var_68_arg_0 ? var_68_arg_1 : var_68_arg_2; [L214] SORT_4 var_69_arg_0 = var_67; [L215] SORT_4 var_69_arg_1 = var_68; [L216] SORT_4 var_69 = var_69_arg_0 + var_69_arg_1; [L217] var_69 = var_69 & mask_SORT_4 [L218] SORT_4 var_70_arg_0 = var_69; [L219] SORT_4 var_70_arg_1 = var_63; [L220] SORT_1 var_70 = var_70_arg_0 <= var_70_arg_1; [L221] SORT_1 var_71_arg_0 = ~state_61; [L222] var_71_arg_0 = var_71_arg_0 & mask_SORT_1 [L223] SORT_1 var_71_arg_1 = ~var_70; [L224] var_71_arg_1 = var_71_arg_1 & mask_SORT_1 [L225] SORT_1 var_71 = var_71_arg_0 & var_71_arg_1; [L226] var_71 = var_71 & mask_SORT_1 [L227] SORT_1 bad_72_arg_0 = var_71; [L228] CALL __VERIFIER_assert(!(bad_72_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 95 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 12.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 759 SdHoareTripleChecker+Valid, 12.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 759 mSDsluCounter, 1160 SdHoareTripleChecker+Invalid, 12.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 770 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 390 mSDtfsCounter, 33 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=3, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 260 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 54 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 21:08:31,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/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_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/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 64bit --witnessprinter.graph.data.programhash c9458c11c88f349e1ca0bb9d4b975cefb238063fab6b2af878cb463f72770ad9 --- 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 21:08:34,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:08:34,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:08:34,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:08:34,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:08:34,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:08:34,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:08:34,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:08:34,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:08:34,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:08:34,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:08:34,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:08:34,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:08:34,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:08:34,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:08:34,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:08:34,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:08:34,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:08:34,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:08:34,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:08:34,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:08:34,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:08:34,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:08:34,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:08:34,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:08:34,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:08:34,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:08:34,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:08:34,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:08:34,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:08:34,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:08:34,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:08:34,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:08:34,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:08:34,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:08:34,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:08:34,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:08:34,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:08:34,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:08:34,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:08:34,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:08:34,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 21:08:34,436 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:08:34,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:08:34,438 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:08:34,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:08:34,439 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:08:34,440 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:08:34,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:08:34,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:08:34,442 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:08:34,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:08:34,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:08:34,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:08:34,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:08:34,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:08:34,444 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:08:34,445 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:08:34,445 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:08:34,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:08:34,445 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:08:34,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:08:34,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:08:34,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:08:34,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:08:34,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:08:34,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:08:34,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:08:34,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:08:34,448 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:08:34,448 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:08:34,448 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:08:34,449 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:08:34,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:08:34,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:08:34,449 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9458c11c88f349e1ca0bb9d4b975cefb238063fab6b2af878cb463f72770ad9 [2022-11-02 21:08:34,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:08:34,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:08:34,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:08:34,862 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:08:34,863 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:08:34,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c [2022-11-02 21:08:34,937 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/data/ad0d59841/8cef74d901e549df91e4d8438103123c/FLAG832a521da [2022-11-02 21:08:35,686 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:08:35,687 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c [2022-11-02 21:08:35,707 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/data/ad0d59841/8cef74d901e549df91e4d8438103123c/FLAG832a521da [2022-11-02 21:08:35,940 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/data/ad0d59841/8cef74d901e549df91e4d8438103123c [2022-11-02 21:08:35,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:08:35,947 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:08:35,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:08:35,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:08:35,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:08:35,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:08:35" (1/1) ... [2022-11-02 21:08:35,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@732640c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:35, skipping insertion in model container [2022-11-02 21:08:35,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:08:35" (1/1) ... [2022-11-02 21:08:35,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:08:36,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:08:36,252 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_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c[1014,1027] [2022-11-02 21:08:36,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:08:36,616 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:08:36,631 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_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c[1014,1027] [2022-11-02 21:08:36,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:08:36,778 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:08:36,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:36 WrapperNode [2022-11-02 21:08:36,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:08:36,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:08:36,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:08:36,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:08:36,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:36" (1/1) ... [2022-11-02 21:08:36,825 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:36" (1/1) ... [2022-11-02 21:08:36,934 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1655 [2022-11-02 21:08:36,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:08:36,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:08:36,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:08:36,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:08:36,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:36" (1/1) ... [2022-11-02 21:08:36,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:36" (1/1) ... [2022-11-02 21:08:36,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:36" (1/1) ... [2022-11-02 21:08:36,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:36" (1/1) ... [2022-11-02 21:08:37,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:36" (1/1) ... [2022-11-02 21:08:37,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:36" (1/1) ... [2022-11-02 21:08:37,030 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:36" (1/1) ... [2022-11-02 21:08:37,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:36" (1/1) ... [2022-11-02 21:08:37,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:08:37,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:08:37,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:08:37,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:08:37,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:36" (1/1) ... [2022-11-02 21:08:37,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:08:37,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:37,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:08:37,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:08:37,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:08:37,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:08:37,618 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:08:37,620 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:08:39,031 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:08:39,043 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:08:39,043 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:08:39,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:08:39 BoogieIcfgContainer [2022-11-02 21:08:39,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:08:39,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:08:39,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:08:39,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:08:39,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:08:35" (1/3) ... [2022-11-02 21:08:39,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4cb4bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:08:39, skipping insertion in model container [2022-11-02 21:08:39,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:36" (2/3) ... [2022-11-02 21:08:39,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4cb4bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:08:39, skipping insertion in model container [2022-11-02 21:08:39,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:08:39" (3/3) ... [2022-11-02 21:08:39,057 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.peterson.3.prop1-func-interl.c [2022-11-02 21:08:39,078 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:08:39,078 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:08:39,151 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:08:39,157 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;@684af31d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:08:39,157 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:08:39,161 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 94 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:39,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:08:39,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:39,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:39,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:39,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:39,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1473645707, now seen corresponding path program 1 times [2022-11-02 21:08:39,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:39,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293524751] [2022-11-02 21:08:39,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:39,192 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:39,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:39,195 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:39,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:08:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:39,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:08:39,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:39,636 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 21:08:39,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:39,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:39,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293524751] [2022-11-02 21:08:39,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293524751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:39,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:39,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:08:39,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950094270] [2022-11-02 21:08:39,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:39,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:08:39,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:39,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:08:39,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:08:39,676 INFO L87 Difference]: Start difference. First operand has 95 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 94 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:39,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:39,926 INFO L93 Difference]: Finished difference Result 361 states and 539 transitions. [2022-11-02 21:08:39,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:08:39,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 21:08:39,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:39,945 INFO L225 Difference]: With dead ends: 361 [2022-11-02 21:08:39,946 INFO L226 Difference]: Without dead ends: 268 [2022-11-02 21:08:39,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:08:39,959 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 385 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:39,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 511 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:08:39,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-02 21:08:40,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 93. [2022-11-02 21:08:40,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4673913043478262) internal successors, (135), 92 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:40,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 135 transitions. [2022-11-02 21:08:40,032 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 135 transitions. Word has length 11 [2022-11-02 21:08:40,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:40,033 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 135 transitions. [2022-11-02 21:08:40,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:40,033 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 135 transitions. [2022-11-02 21:08:40,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:08:40,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:40,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:40,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:40,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:40,248 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:40,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:40,249 INFO L85 PathProgramCache]: Analyzing trace with hash 2011974963, now seen corresponding path program 1 times [2022-11-02 21:08:40,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:40,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283571386] [2022-11-02 21:08:40,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:40,250 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:40,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:40,252 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:40,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:08:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:40,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:08:40,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:40,641 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 21:08:40,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:40,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:40,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283571386] [2022-11-02 21:08:40,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283571386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:40,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:40,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:08:40,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876215514] [2022-11-02 21:08:40,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:40,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:08:40,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:40,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:08:40,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:08:40,653 INFO L87 Difference]: Start difference. First operand 93 states and 135 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:40,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:40,872 INFO L93 Difference]: Finished difference Result 357 states and 523 transitions. [2022-11-02 21:08:40,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:08:40,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 21:08:40,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:40,877 INFO L225 Difference]: With dead ends: 357 [2022-11-02 21:08:40,877 INFO L226 Difference]: Without dead ends: 268 [2022-11-02 21:08:40,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:08:40,879 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 379 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:40,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 510 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:08:40,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-02 21:08:40,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 95. [2022-11-02 21:08:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.4574468085106382) internal successors, (137), 94 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:40,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 137 transitions. [2022-11-02 21:08:40,891 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 137 transitions. Word has length 11 [2022-11-02 21:08:40,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:40,891 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 137 transitions. [2022-11-02 21:08:40,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:40,892 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 137 transitions. [2022-11-02 21:08:40,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:08:40,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:40,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:40,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:41,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:41,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:41,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:41,106 INFO L85 PathProgramCache]: Analyzing trace with hash 2069233265, now seen corresponding path program 1 times [2022-11-02 21:08:41,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:41,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379851216] [2022-11-02 21:08:41,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:41,107 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:41,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:41,114 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:41,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:08:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:41,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:08:41,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:41,476 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 21:08:41,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:41,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:41,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379851216] [2022-11-02 21:08:41,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379851216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:41,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:41,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:08:41,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758841958] [2022-11-02 21:08:41,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:41,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:08:41,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:41,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:08:41,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:08:41,486 INFO L87 Difference]: Start difference. First operand 95 states and 137 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:41,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:41,625 INFO L93 Difference]: Finished difference Result 357 states and 522 transitions. [2022-11-02 21:08:41,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:08:41,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 21:08:41,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:41,629 INFO L225 Difference]: With dead ends: 357 [2022-11-02 21:08:41,629 INFO L226 Difference]: Without dead ends: 268 [2022-11-02 21:08:41,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:08:41,631 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 373 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:41,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 512 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:08:41,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-02 21:08:41,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 97. [2022-11-02 21:08:41,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.4479166666666667) internal successors, (139), 96 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:41,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 139 transitions. [2022-11-02 21:08:41,643 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 139 transitions. Word has length 11 [2022-11-02 21:08:41,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:41,643 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 139 transitions. [2022-11-02 21:08:41,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:41,644 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 139 transitions. [2022-11-02 21:08:41,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:08:41,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:41,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:41,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:41,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:41,856 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:41,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:41,857 INFO L85 PathProgramCache]: Analyzing trace with hash 2069292847, now seen corresponding path program 1 times [2022-11-02 21:08:41,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:41,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297439475] [2022-11-02 21:08:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:41,858 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:41,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:41,859 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:41,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:08:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:42,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 21:08:42,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:42,557 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 21:08:42,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:42,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:42,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297439475] [2022-11-02 21:08:42,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297439475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:42,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:42,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:08:42,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881462219] [2022-11-02 21:08:42,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:42,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:08:42,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:42,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:08:42,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:42,562 INFO L87 Difference]: Start difference. First operand 97 states and 139 transitions. Second operand has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:43,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:43,894 INFO L93 Difference]: Finished difference Result 381 states and 553 transitions. [2022-11-02 21:08:43,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 21:08:43,895 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 21:08:43,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:43,896 INFO L225 Difference]: With dead ends: 381 [2022-11-02 21:08:43,896 INFO L226 Difference]: Without dead ends: 379 [2022-11-02 21:08:43,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2022-11-02 21:08:43,898 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 1022 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:43,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 1173 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 21:08:43,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-11-02 21:08:43,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 103. [2022-11-02 21:08:43,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.4411764705882353) internal successors, (147), 102 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:43,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 147 transitions. [2022-11-02 21:08:43,906 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 147 transitions. Word has length 11 [2022-11-02 21:08:43,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:43,907 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 147 transitions. [2022-11-02 21:08:43,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:43,907 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 147 transitions. [2022-11-02 21:08:43,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:08:43,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:43,910 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:43,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:44,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:44,122 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:44,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:44,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1639282231, now seen corresponding path program 1 times [2022-11-02 21:08:44,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:44,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703156707] [2022-11-02 21:08:44,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:44,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:44,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:44,127 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:44,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:08:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:44,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 21:08:44,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:45,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:45,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:45,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703156707] [2022-11-02 21:08:45,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703156707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:45,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:45,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:08:45,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083532969] [2022-11-02 21:08:45,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:45,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:08:45,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:45,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:08:45,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:08:45,368 INFO L87 Difference]: Start difference. First operand 103 states and 147 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:45,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:45,783 INFO L93 Difference]: Finished difference Result 373 states and 543 transitions. [2022-11-02 21:08:45,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:08:45,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:08:45,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:45,789 INFO L225 Difference]: With dead ends: 373 [2022-11-02 21:08:45,789 INFO L226 Difference]: Without dead ends: 278 [2022-11-02 21:08:45,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:08:45,790 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 329 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:45,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 455 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:08:45,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-02 21:08:45,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 119. [2022-11-02 21:08:45,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4322033898305084) internal successors, (169), 118 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:45,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 169 transitions. [2022-11-02 21:08:45,801 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 169 transitions. Word has length 98 [2022-11-02 21:08:45,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:45,801 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 169 transitions. [2022-11-02 21:08:45,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:45,802 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 169 transitions. [2022-11-02 21:08:45,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:08:45,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:45,809 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:45,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:46,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:46,034 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:46,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:46,034 INFO L85 PathProgramCache]: Analyzing trace with hash -921580615, now seen corresponding path program 1 times [2022-11-02 21:08:46,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:46,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133075472] [2022-11-02 21:08:46,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:46,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:46,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:46,036 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:46,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:08:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:46,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 21:08:46,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:47,162 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:47,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:47,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:47,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133075472] [2022-11-02 21:08:47,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133075472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:47,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:47,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:08:47,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163225928] [2022-11-02 21:08:47,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:47,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:08:47,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:47,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:08:47,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:08:47,166 INFO L87 Difference]: Start difference. First operand 119 states and 169 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:47,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:47,631 INFO L93 Difference]: Finished difference Result 402 states and 582 transitions. [2022-11-02 21:08:47,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:08:47,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:08:47,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:47,642 INFO L225 Difference]: With dead ends: 402 [2022-11-02 21:08:47,642 INFO L226 Difference]: Without dead ends: 307 [2022-11-02 21:08:47,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:47,644 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 483 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:47,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 702 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:08:47,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-02 21:08:47,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 121. [2022-11-02 21:08:47,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.425) internal successors, (171), 120 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:47,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 171 transitions. [2022-11-02 21:08:47,652 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 171 transitions. Word has length 98 [2022-11-02 21:08:47,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:47,652 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 171 transitions. [2022-11-02 21:08:47,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:47,653 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 171 transitions. [2022-11-02 21:08:47,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:08:47,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:47,655 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:47,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:47,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:47,877 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:47,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:47,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1462344123, now seen corresponding path program 1 times [2022-11-02 21:08:47,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:47,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807183615] [2022-11-02 21:08:47,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:47,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:47,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:47,881 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:47,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:08:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:48,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 21:08:48,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:49,087 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:49,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:49,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:49,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807183615] [2022-11-02 21:08:49,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807183615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:49,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:49,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:08:49,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648927595] [2022-11-02 21:08:49,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:49,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:08:49,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:49,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:08:49,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:08:49,093 INFO L87 Difference]: Start difference. First operand 121 states and 171 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:49,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:49,566 INFO L93 Difference]: Finished difference Result 402 states and 581 transitions. [2022-11-02 21:08:49,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:08:49,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:08:49,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:49,570 INFO L225 Difference]: With dead ends: 402 [2022-11-02 21:08:49,570 INFO L226 Difference]: Without dead ends: 307 [2022-11-02 21:08:49,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:49,572 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 476 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:49,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 698 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:08:49,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-02 21:08:49,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 123. [2022-11-02 21:08:49,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.4180327868852458) internal successors, (173), 122 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:49,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 173 transitions. [2022-11-02 21:08:49,581 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 173 transitions. Word has length 98 [2022-11-02 21:08:49,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:49,582 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 173 transitions. [2022-11-02 21:08:49,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:49,583 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 173 transitions. [2022-11-02 21:08:49,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:08:49,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:49,585 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:49,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:49,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:49,804 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:49,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:49,805 INFO L85 PathProgramCache]: Analyzing trace with hash 494993469, now seen corresponding path program 1 times [2022-11-02 21:08:49,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:49,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250748454] [2022-11-02 21:08:49,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:49,806 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:49,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:49,808 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:49,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:08:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:50,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 21:08:50,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:51,041 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:51,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:51,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:51,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250748454] [2022-11-02 21:08:51,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250748454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:51,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:51,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:08:51,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395434413] [2022-11-02 21:08:51,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:51,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:08:51,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:51,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:08:51,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:08:51,046 INFO L87 Difference]: Start difference. First operand 123 states and 173 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:51,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:51,719 INFO L93 Difference]: Finished difference Result 402 states and 580 transitions. [2022-11-02 21:08:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:08:51,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:08:51,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:51,725 INFO L225 Difference]: With dead ends: 402 [2022-11-02 21:08:51,726 INFO L226 Difference]: Without dead ends: 307 [2022-11-02 21:08:51,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:51,727 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 468 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:51,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 659 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:08:51,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-02 21:08:51,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 125. [2022-11-02 21:08:51,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.4112903225806452) internal successors, (175), 124 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:51,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 175 transitions. [2022-11-02 21:08:51,737 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 175 transitions. Word has length 98 [2022-11-02 21:08:51,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:51,737 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 175 transitions. [2022-11-02 21:08:51,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:51,738 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 175 transitions. [2022-11-02 21:08:51,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:08:51,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:51,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:51,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:51,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:51,962 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:51,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:51,962 INFO L85 PathProgramCache]: Analyzing trace with hash 2367295, now seen corresponding path program 1 times [2022-11-02 21:08:51,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:51,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619851738] [2022-11-02 21:08:51,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:51,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:51,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:51,964 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:51,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:08:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:52,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 21:08:52,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:53,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:53,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:53,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619851738] [2022-11-02 21:08:53,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619851738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:53,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:53,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:08:53,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208493252] [2022-11-02 21:08:53,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:53,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:08:53,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:53,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:08:53,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:08:53,156 INFO L87 Difference]: Start difference. First operand 125 states and 175 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:53,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:53,853 INFO L93 Difference]: Finished difference Result 408 states and 588 transitions. [2022-11-02 21:08:53,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:08:53,858 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:08:53,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:53,859 INFO L225 Difference]: With dead ends: 408 [2022-11-02 21:08:53,859 INFO L226 Difference]: Without dead ends: 313 [2022-11-02 21:08:53,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:08:53,861 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 597 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:53,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 902 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:08:53,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-02 21:08:53,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 127. [2022-11-02 21:08:53,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.4047619047619047) internal successors, (177), 126 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:53,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 177 transitions. [2022-11-02 21:08:53,869 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 177 transitions. Word has length 98 [2022-11-02 21:08:53,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:53,869 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 177 transitions. [2022-11-02 21:08:53,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:53,870 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 177 transitions. [2022-11-02 21:08:53,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:08:53,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:53,872 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:53,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:54,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:54,093 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:54,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:54,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1213786431, now seen corresponding path program 1 times [2022-11-02 21:08:54,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:54,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082699064] [2022-11-02 21:08:54,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:54,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:54,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:54,097 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:54,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:08:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:54,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 21:08:54,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:55,318 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:55,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:55,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:55,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082699064] [2022-11-02 21:08:55,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1082699064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:55,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:55,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:08:55,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189632594] [2022-11-02 21:08:55,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:55,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:08:55,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:55,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:08:55,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:08:55,323 INFO L87 Difference]: Start difference. First operand 127 states and 177 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:56,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:56,050 INFO L93 Difference]: Finished difference Result 408 states and 587 transitions. [2022-11-02 21:08:56,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:08:56,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:08:56,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:56,053 INFO L225 Difference]: With dead ends: 408 [2022-11-02 21:08:56,053 INFO L226 Difference]: Without dead ends: 313 [2022-11-02 21:08:56,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:08:56,055 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 589 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:56,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 895 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:08:56,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-02 21:08:56,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 129. [2022-11-02 21:08:56,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.3984375) internal successors, (179), 128 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 179 transitions. [2022-11-02 21:08:56,070 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 179 transitions. Word has length 98 [2022-11-02 21:08:56,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:56,071 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 179 transitions. [2022-11-02 21:08:56,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:56,072 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 179 transitions. [2022-11-02 21:08:56,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:08:56,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:56,078 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:56,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:56,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:56,289 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:56,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:56,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1395001027, now seen corresponding path program 1 times [2022-11-02 21:08:56,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:56,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209168135] [2022-11-02 21:08:56,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:56,291 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:56,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:56,292 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:56,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:08:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:56,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 21:08:56,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:57,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:57,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:57,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:57,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209168135] [2022-11-02 21:08:57,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209168135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:57,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:57,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:08:57,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626763878] [2022-11-02 21:08:57,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:57,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:08:57,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:57,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:08:57,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:08:57,606 INFO L87 Difference]: Start difference. First operand 129 states and 179 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:58,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:58,178 INFO L93 Difference]: Finished difference Result 402 states and 577 transitions. [2022-11-02 21:08:58,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:08:58,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:08:58,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:58,184 INFO L225 Difference]: With dead ends: 402 [2022-11-02 21:08:58,184 INFO L226 Difference]: Without dead ends: 307 [2022-11-02 21:08:58,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:58,185 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 447 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:58,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 664 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:08:58,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-02 21:08:58,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 131. [2022-11-02 21:08:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.3923076923076922) internal successors, (181), 130 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:58,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 181 transitions. [2022-11-02 21:08:58,194 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 181 transitions. Word has length 98 [2022-11-02 21:08:58,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:58,194 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 181 transitions. [2022-11-02 21:08:58,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:58,195 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 181 transitions. [2022-11-02 21:08:58,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:08:58,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:58,196 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:58,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:58,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:58,409 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:58,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:58,410 INFO L85 PathProgramCache]: Analyzing trace with hash 977604421, now seen corresponding path program 1 times [2022-11-02 21:08:58,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:58,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127253908] [2022-11-02 21:08:58,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:58,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:58,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:58,413 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:58,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:08:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:59,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 21:08:59,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:59,741 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:59,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:59,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:59,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127253908] [2022-11-02 21:08:59,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127253908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:59,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:59,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:08:59,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277511956] [2022-11-02 21:08:59,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:59,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:08:59,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:59,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:08:59,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:08:59,745 INFO L87 Difference]: Start difference. First operand 131 states and 181 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:00,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:00,357 INFO L93 Difference]: Finished difference Result 414 states and 594 transitions. [2022-11-02 21:09:00,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:09:00,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:09:00,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:00,365 INFO L225 Difference]: With dead ends: 414 [2022-11-02 21:09:00,365 INFO L226 Difference]: Without dead ends: 319 [2022-11-02 21:09:00,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:09:00,367 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 585 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:00,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 906 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:09:00,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-02 21:09:00,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 133. [2022-11-02 21:09:00,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.3863636363636365) internal successors, (183), 132 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:00,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 183 transitions. [2022-11-02 21:09:00,382 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 183 transitions. Word has length 98 [2022-11-02 21:09:00,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:00,383 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 183 transitions. [2022-11-02 21:09:00,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:00,383 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 183 transitions. [2022-11-02 21:09:00,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:09:00,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:00,385 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:00,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:00,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:00,601 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:00,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:00,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1355788217, now seen corresponding path program 1 times [2022-11-02 21:09:00,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:00,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119965934] [2022-11-02 21:09:00,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:00,604 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:00,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:00,605 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:00,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 21:09:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:01,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:09:01,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:01,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:09:01,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:01,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119965934] [2022-11-02 21:09:01,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119965934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:01,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:01,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:09:01,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785602847] [2022-11-02 21:09:01,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:01,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:09:01,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:01,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:09:01,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:09:01,648 INFO L87 Difference]: Start difference. First operand 133 states and 183 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:01,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:01,864 INFO L93 Difference]: Finished difference Result 373 states and 535 transitions. [2022-11-02 21:09:01,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:09:01,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:09:01,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:01,867 INFO L225 Difference]: With dead ends: 373 [2022-11-02 21:09:01,867 INFO L226 Difference]: Without dead ends: 278 [2022-11-02 21:09:01,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:01,868 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 217 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:01,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 478 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:09:01,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-02 21:09:01,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 161. [2022-11-02 21:09:01,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.4) internal successors, (224), 160 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:01,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 224 transitions. [2022-11-02 21:09:01,876 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 224 transitions. Word has length 98 [2022-11-02 21:09:01,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:01,877 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 224 transitions. [2022-11-02 21:09:01,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:01,877 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 224 transitions. [2022-11-02 21:09:01,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:09:01,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:01,879 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:01,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:02,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:02,089 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:02,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:02,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1428174775, now seen corresponding path program 1 times [2022-11-02 21:09:02,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:02,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725632657] [2022-11-02 21:09:02,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:02,091 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:02,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:02,092 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:02,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 21:09:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:02,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:09:02,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:03,136 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:03,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:09:03,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:03,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725632657] [2022-11-02 21:09:03,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725632657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:03,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:03,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:09:03,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658998681] [2022-11-02 21:09:03,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:03,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:09:03,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:03,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:09:03,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:09:03,138 INFO L87 Difference]: Start difference. First operand 161 states and 224 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:03,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:03,545 INFO L93 Difference]: Finished difference Result 408 states and 583 transitions. [2022-11-02 21:09:03,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:09:03,550 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:09:03,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:03,552 INFO L225 Difference]: With dead ends: 408 [2022-11-02 21:09:03,552 INFO L226 Difference]: Without dead ends: 313 [2022-11-02 21:09:03,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:09:03,553 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 490 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:03,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 814 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:09:03,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-02 21:09:03,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 165. [2022-11-02 21:09:03,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.396341463414634) internal successors, (229), 164 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:03,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 229 transitions. [2022-11-02 21:09:03,562 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 229 transitions. Word has length 98 [2022-11-02 21:09:03,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:03,562 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 229 transitions. [2022-11-02 21:09:03,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:03,563 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 229 transitions. [2022-11-02 21:09:03,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:09:03,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:03,564 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:03,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:03,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:03,786 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:03,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:03,787 INFO L85 PathProgramCache]: Analyzing trace with hash -41971381, now seen corresponding path program 1 times [2022-11-02 21:09:03,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:03,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924382925] [2022-11-02 21:09:03,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:03,788 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:03,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:03,790 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:03,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 21:09:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:04,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:09:04,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:04,763 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:04,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:09:04,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:04,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924382925] [2022-11-02 21:09:04,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924382925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:04,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:04,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:09:04,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585218418] [2022-11-02 21:09:04,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:04,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:09:04,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:04,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:09:04,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:09:04,766 INFO L87 Difference]: Start difference. First operand 165 states and 229 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:04,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:04,969 INFO L93 Difference]: Finished difference Result 373 states and 533 transitions. [2022-11-02 21:09:04,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:09:04,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:09:04,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:04,972 INFO L225 Difference]: With dead ends: 373 [2022-11-02 21:09:04,972 INFO L226 Difference]: Without dead ends: 278 [2022-11-02 21:09:04,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:04,976 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 195 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:04,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 476 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:09:04,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-02 21:09:04,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 169. [2022-11-02 21:09:04,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.3928571428571428) internal successors, (234), 168 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:04,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 234 transitions. [2022-11-02 21:09:04,992 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 234 transitions. Word has length 98 [2022-11-02 21:09:04,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:04,993 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 234 transitions. [2022-11-02 21:09:04,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:04,993 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 234 transitions. [2022-11-02 21:09:04,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:09:04,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:04,994 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:05,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:05,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:05,218 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:05,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:05,218 INFO L85 PathProgramCache]: Analyzing trace with hash 98577229, now seen corresponding path program 1 times [2022-11-02 21:09:05,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:05,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710273117] [2022-11-02 21:09:05,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:05,220 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:05,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:05,221 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:05,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 21:09:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:05,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:09:05,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:06,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:06,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:09:06,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:06,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710273117] [2022-11-02 21:09:06,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710273117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:06,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:06,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:09:06,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337864131] [2022-11-02 21:09:06,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:06,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:09:06,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:06,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:09:06,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:09:06,339 INFO L87 Difference]: Start difference. First operand 169 states and 234 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:06,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:06,826 INFO L93 Difference]: Finished difference Result 408 states and 581 transitions. [2022-11-02 21:09:06,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:09:06,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:09:06,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:06,832 INFO L225 Difference]: With dead ends: 408 [2022-11-02 21:09:06,832 INFO L226 Difference]: Without dead ends: 313 [2022-11-02 21:09:06,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:09:06,833 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 464 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:06,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 788 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:09:06,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-02 21:09:06,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 173. [2022-11-02 21:09:06,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.3895348837209303) internal successors, (239), 172 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:06,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 239 transitions. [2022-11-02 21:09:06,843 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 239 transitions. Word has length 98 [2022-11-02 21:09:06,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:06,844 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 239 transitions. [2022-11-02 21:09:06,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:06,844 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 239 transitions. [2022-11-02 21:09:06,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:09:06,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:06,845 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:06,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:07,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:07,061 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:07,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:07,062 INFO L85 PathProgramCache]: Analyzing trace with hash 521279055, now seen corresponding path program 1 times [2022-11-02 21:09:07,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:07,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044563503] [2022-11-02 21:09:07,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:07,063 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:07,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:07,064 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:07,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 21:09:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:07,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:09:07,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:08,057 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:08,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:09:08,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:08,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044563503] [2022-11-02 21:09:08,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044563503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:08,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:08,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:09:08,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542934916] [2022-11-02 21:09:08,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:08,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:08,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:08,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:08,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:08,060 INFO L87 Difference]: Start difference. First operand 173 states and 239 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:08,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:08,380 INFO L93 Difference]: Finished difference Result 402 states and 571 transitions. [2022-11-02 21:09:08,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:09:08,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:09:08,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:08,382 INFO L225 Difference]: With dead ends: 402 [2022-11-02 21:09:08,382 INFO L226 Difference]: Without dead ends: 307 [2022-11-02 21:09:08,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:09:08,383 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 328 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:08,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 620 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:09:08,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-02 21:09:08,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 175. [2022-11-02 21:09:08,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.3850574712643677) internal successors, (241), 174 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:08,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 241 transitions. [2022-11-02 21:09:08,393 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 241 transitions. Word has length 98 [2022-11-02 21:09:08,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:08,393 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 241 transitions. [2022-11-02 21:09:08,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:08,394 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 241 transitions. [2022-11-02 21:09:08,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:09:08,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:08,395 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:08,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:08,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:08,609 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:08,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:08,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1167664687, now seen corresponding path program 1 times [2022-11-02 21:09:08,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:08,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745560958] [2022-11-02 21:09:08,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:08,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:08,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:08,612 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:08,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 21:09:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:09,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:09:09,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:09,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:09:09,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:09,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745560958] [2022-11-02 21:09:09,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745560958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:09,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:09,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:09:09,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981119387] [2022-11-02 21:09:09,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:09,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:09:09,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:09,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:09:09,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:09:09,635 INFO L87 Difference]: Start difference. First operand 175 states and 241 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:09,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:09,871 INFO L93 Difference]: Finished difference Result 373 states and 530 transitions. [2022-11-02 21:09:09,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:09:09,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:09:09,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:09,873 INFO L225 Difference]: With dead ends: 373 [2022-11-02 21:09:09,873 INFO L226 Difference]: Without dead ends: 278 [2022-11-02 21:09:09,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:09,874 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 171 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:09,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 472 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:09:09,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-02 21:09:09,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 177. [2022-11-02 21:09:09,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.3806818181818181) internal successors, (243), 176 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:09,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 243 transitions. [2022-11-02 21:09:09,884 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 243 transitions. Word has length 98 [2022-11-02 21:09:09,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:09,884 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 243 transitions. [2022-11-02 21:09:09,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:09,885 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 243 transitions. [2022-11-02 21:09:09,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:09:09,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:09,886 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:09,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:10,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:10,108 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:10,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:10,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1538954707, now seen corresponding path program 1 times [2022-11-02 21:09:10,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:10,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898877242] [2022-11-02 21:09:10,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:10,110 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:10,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:10,111 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:10,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 21:09:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:10,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:09:10,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:11,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:09:11,255 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:11,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898877242] [2022-11-02 21:09:11,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898877242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:11,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:11,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:09:11,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658297192] [2022-11-02 21:09:11,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:11,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:11,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:11,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:11,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:09:11,257 INFO L87 Difference]: Start difference. First operand 177 states and 243 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:11,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:11,552 INFO L93 Difference]: Finished difference Result 402 states and 569 transitions. [2022-11-02 21:09:11,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:09:11,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:09:11,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:11,559 INFO L225 Difference]: With dead ends: 402 [2022-11-02 21:09:11,559 INFO L226 Difference]: Without dead ends: 307 [2022-11-02 21:09:11,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:09:11,561 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 302 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:11,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 608 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:09:11,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-02 21:09:11,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 183. [2022-11-02 21:09:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.379120879120879) internal successors, (251), 182 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:11,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 251 transitions. [2022-11-02 21:09:11,571 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 251 transitions. Word has length 98 [2022-11-02 21:09:11,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:11,572 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 251 transitions. [2022-11-02 21:09:11,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:11,572 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 251 transitions. [2022-11-02 21:09:11,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:09:11,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:11,573 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:11,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:11,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:11,798 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:11,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:11,798 INFO L85 PathProgramCache]: Analyzing trace with hash -2054948011, now seen corresponding path program 1 times [2022-11-02 21:09:11,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:11,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355941029] [2022-11-02 21:09:11,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:11,800 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:11,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:11,802 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:11,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 21:09:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:12,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:09:12,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:13,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:13,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:14,167 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:14,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355941029] [2022-11-02 21:09:14,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355941029] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:14,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:09:14,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:09:14,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542861369] [2022-11-02 21:09:14,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:14,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:09:14,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:14,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:09:14,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:09:14,170 INFO L87 Difference]: Start difference. First operand 183 states and 251 transitions. Second operand has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:14,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:14,522 INFO L93 Difference]: Finished difference Result 355 states and 490 transitions. [2022-11-02 21:09:14,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:09:14,522 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:09:14,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:14,523 INFO L225 Difference]: With dead ends: 355 [2022-11-02 21:09:14,523 INFO L226 Difference]: Without dead ends: 260 [2022-11-02 21:09:14,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 180 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:09:14,524 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 306 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:14,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 1011 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 34 Unchecked, 0.2s Time] [2022-11-02 21:09:14,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-02 21:09:14,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2022-11-02 21:09:14,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.3513513513513513) internal successors, (350), 259 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:14,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 350 transitions. [2022-11-02 21:09:14,537 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 350 transitions. Word has length 98 [2022-11-02 21:09:14,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:14,538 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 350 transitions. [2022-11-02 21:09:14,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:14,538 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 350 transitions. [2022-11-02 21:09:14,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:09:14,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:14,539 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:14,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:14,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:14,745 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:14,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:14,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1430672659, now seen corresponding path program 1 times [2022-11-02 21:09:14,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:14,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593222697] [2022-11-02 21:09:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:14,747 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:14,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:14,748 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:14,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 21:09:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:15,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:09:15,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:16,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:16,986 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:16,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:16,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593222697] [2022-11-02 21:09:16,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593222697] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:16,987 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:09:16,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:09:16,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920215610] [2022-11-02 21:09:16,988 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:16,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:09:16,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:16,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:09:16,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:09:16,990 INFO L87 Difference]: Start difference. First operand 260 states and 350 transitions. Second operand has 16 states, 16 states have (on average 11.875) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:17,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:17,206 INFO L93 Difference]: Finished difference Result 524 states and 708 transitions. [2022-11-02 21:09:17,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:09:17,208 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.875) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:09:17,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:17,210 INFO L225 Difference]: With dead ends: 524 [2022-11-02 21:09:17,210 INFO L226 Difference]: Without dead ends: 429 [2022-11-02 21:09:17,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 180 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:09:17,211 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 242 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:17,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 1220 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 125 Unchecked, 0.1s Time] [2022-11-02 21:09:17,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-11-02 21:09:17,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 410. [2022-11-02 21:09:17,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.3227383863080684) internal successors, (541), 409 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:17,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 541 transitions. [2022-11-02 21:09:17,233 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 541 transitions. Word has length 98 [2022-11-02 21:09:17,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:17,233 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 541 transitions. [2022-11-02 21:09:17,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.875) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:17,234 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 541 transitions. [2022-11-02 21:09:17,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:09:17,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:17,235 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:17,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:17,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:17,454 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:17,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:17,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1487930961, now seen corresponding path program 1 times [2022-11-02 21:09:17,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:17,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833288117] [2022-11-02 21:09:17,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:17,456 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:17,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:17,457 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:17,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 21:09:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:18,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-02 21:09:18,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:19,511 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:19,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:23,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:23,059 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:23,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833288117] [2022-11-02 21:09:23,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833288117] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:23,060 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:09:23,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:09:23,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214477728] [2022-11-02 21:09:23,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:23,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:09:23,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:23,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:09:23,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:09:23,063 INFO L87 Difference]: Start difference. First operand 410 states and 541 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:23,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:23,322 INFO L93 Difference]: Finished difference Result 633 states and 838 transitions. [2022-11-02 21:09:23,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:09:23,323 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:09:23,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:23,330 INFO L225 Difference]: With dead ends: 633 [2022-11-02 21:09:23,330 INFO L226 Difference]: Without dead ends: 631 [2022-11-02 21:09:23,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:09:23,334 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 295 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:23,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 2168 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 84 Unchecked, 0.0s Time] [2022-11-02 21:09:23,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2022-11-02 21:09:23,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 620. [2022-11-02 21:09:23,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 619 states have (on average 1.3279483037156705) internal successors, (822), 619 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:23,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 822 transitions. [2022-11-02 21:09:23,375 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 822 transitions. Word has length 98 [2022-11-02 21:09:23,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:23,375 INFO L495 AbstractCegarLoop]: Abstraction has 620 states and 822 transitions. [2022-11-02 21:09:23,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:23,376 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 822 transitions. [2022-11-02 21:09:23,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:09:23,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:23,378 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:23,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:23,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:23,597 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:23,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:23,598 INFO L85 PathProgramCache]: Analyzing trace with hash 643925459, now seen corresponding path program 1 times [2022-11-02 21:09:23,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:23,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117962011] [2022-11-02 21:09:23,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:23,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:23,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:23,601 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:23,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 21:09:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:24,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 21:09:24,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:25,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:32,977 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:32,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:32,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117962011] [2022-11-02 21:09:32,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117962011] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:32,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:09:32,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:09:32,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685770097] [2022-11-02 21:09:32,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:32,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:09:32,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:32,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:09:32,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=229, Unknown=2, NotChecked=0, Total=306 [2022-11-02 21:09:32,981 INFO L87 Difference]: Start difference. First operand 620 states and 822 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:33,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:33,341 INFO L93 Difference]: Finished difference Result 1194 states and 1580 transitions. [2022-11-02 21:09:33,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:09:33,342 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:09:33,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:33,347 INFO L225 Difference]: With dead ends: 1194 [2022-11-02 21:09:33,347 INFO L226 Difference]: Without dead ends: 1192 [2022-11-02 21:09:33,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=91, Invalid=287, Unknown=2, NotChecked=0, Total=380 [2022-11-02 21:09:33,349 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 270 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:33,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 1422 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 31 Unchecked, 0.0s Time] [2022-11-02 21:09:33,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2022-11-02 21:09:33,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1184. [2022-11-02 21:09:33,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1183 states have (on average 1.3254437869822486) internal successors, (1568), 1183 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:33,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1568 transitions. [2022-11-02 21:09:33,433 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1568 transitions. Word has length 98 [2022-11-02 21:09:33,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:33,433 INFO L495 AbstractCegarLoop]: Abstraction has 1184 states and 1568 transitions. [2022-11-02 21:09:33,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:33,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1568 transitions. [2022-11-02 21:09:33,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:09:33,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:33,437 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:33,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:33,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:33,652 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:33,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:33,653 INFO L85 PathProgramCache]: Analyzing trace with hash -357436205, now seen corresponding path program 1 times [2022-11-02 21:09:33,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:33,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534620738] [2022-11-02 21:09:33,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:33,655 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:33,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:33,657 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:33,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 21:09:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:34,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 21:09:34,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:36,218 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:36,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:40,608 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:40,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:40,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534620738] [2022-11-02 21:09:40,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534620738] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:40,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:09:40,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:09:40,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222103127] [2022-11-02 21:09:40,609 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:40,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:09:40,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:40,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:09:40,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:09:40,611 INFO L87 Difference]: Start difference. First operand 1184 states and 1568 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:40,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:40,941 INFO L93 Difference]: Finished difference Result 1800 states and 2387 transitions. [2022-11-02 21:09:40,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:09:40,943 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:09:40,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:40,949 INFO L225 Difference]: With dead ends: 1800 [2022-11-02 21:09:40,950 INFO L226 Difference]: Without dead ends: 1798 [2022-11-02 21:09:40,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:09:40,952 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 246 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:40,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1499 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 33 Unchecked, 0.0s Time] [2022-11-02 21:09:40,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2022-11-02 21:09:41,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1790. [2022-11-02 21:09:41,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1790 states, 1789 states have (on average 1.3275572945779766) internal successors, (2375), 1789 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:41,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1790 states to 1790 states and 2375 transitions. [2022-11-02 21:09:41,131 INFO L78 Accepts]: Start accepts. Automaton has 1790 states and 2375 transitions. Word has length 98 [2022-11-02 21:09:41,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:41,132 INFO L495 AbstractCegarLoop]: Abstraction has 1790 states and 2375 transitions. [2022-11-02 21:09:41,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:41,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1790 states and 2375 transitions. [2022-11-02 21:09:41,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:09:41,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:41,137 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:41,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:41,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:41,353 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:41,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:41,354 INFO L85 PathProgramCache]: Analyzing trace with hash 302095317, now seen corresponding path program 1 times [2022-11-02 21:09:41,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:41,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779148703] [2022-11-02 21:09:41,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:41,355 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:41,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:41,357 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:41,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 21:09:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:42,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-02 21:09:42,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:43,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:51,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:51,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779148703] [2022-11-02 21:09:51,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779148703] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:51,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:09:51,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:09:51,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202169876] [2022-11-02 21:09:51,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:51,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:09:51,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:51,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:09:51,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 21:09:51,554 INFO L87 Difference]: Start difference. First operand 1790 states and 2375 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:51,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:51,930 INFO L93 Difference]: Finished difference Result 3562 states and 4728 transitions. [2022-11-02 21:09:51,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:09:51,945 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:09:51,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:51,956 INFO L225 Difference]: With dead ends: 3562 [2022-11-02 21:09:51,956 INFO L226 Difference]: Without dead ends: 3560 [2022-11-02 21:09:51,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=91, Invalid=288, Unknown=1, NotChecked=0, Total=380 [2022-11-02 21:09:51,958 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 471 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:51,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 1198 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 33 Unchecked, 0.0s Time] [2022-11-02 21:09:51,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3560 states. [2022-11-02 21:09:52,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3560 to 3552. [2022-11-02 21:09:52,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3552 states, 3551 states have (on average 1.3280765981413687) internal successors, (4716), 3551 states have internal predecessors, (4716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:52,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 4716 transitions. [2022-11-02 21:09:52,241 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 4716 transitions. Word has length 98 [2022-11-02 21:09:52,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:52,241 INFO L495 AbstractCegarLoop]: Abstraction has 3552 states and 4716 transitions. [2022-11-02 21:09:52,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:52,242 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 4716 transitions. [2022-11-02 21:09:52,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:09:52,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:52,247 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:52,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:52,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:52,472 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:52,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:52,472 INFO L85 PathProgramCache]: Analyzing trace with hash -595297961, now seen corresponding path program 1 times [2022-11-02 21:09:52,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:52,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035174809] [2022-11-02 21:09:52,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:52,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:52,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:52,475 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:52,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 21:09:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:53,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-02 21:09:53,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:54,994 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:54,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:01,842 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:01,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:01,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035174809] [2022-11-02 21:10:01,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035174809] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:01,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:01,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:10:01,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971324006] [2022-11-02 21:10:01,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:01,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:10:01,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:01,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:10:01,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 21:10:01,845 INFO L87 Difference]: Start difference. First operand 3552 states and 4716 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:02,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:02,401 INFO L93 Difference]: Finished difference Result 6583 states and 8780 transitions. [2022-11-02 21:10:02,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:10:02,401 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:10:02,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:02,422 INFO L225 Difference]: With dead ends: 6583 [2022-11-02 21:10:02,422 INFO L226 Difference]: Without dead ends: 6581 [2022-11-02 21:10:02,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=91, Invalid=288, Unknown=1, NotChecked=0, Total=380 [2022-11-02 21:10:02,425 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 386 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:02,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 1386 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 51 Unchecked, 0.0s Time] [2022-11-02 21:10:02,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6581 states. [2022-11-02 21:10:02,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6581 to 6524. [2022-11-02 21:10:02,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6524 states, 6523 states have (on average 1.3334355357964127) internal successors, (8698), 6523 states have internal predecessors, (8698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:02,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6524 states to 6524 states and 8698 transitions. [2022-11-02 21:10:02,957 INFO L78 Accepts]: Start accepts. Automaton has 6524 states and 8698 transitions. Word has length 98 [2022-11-02 21:10:02,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:02,957 INFO L495 AbstractCegarLoop]: Abstraction has 6524 states and 8698 transitions. [2022-11-02 21:10:02,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:02,958 INFO L276 IsEmpty]: Start isEmpty. Operand 6524 states and 8698 transitions. [2022-11-02 21:10:02,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:10:02,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:02,967 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:02,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-02 21:10:03,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:03,187 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:03,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:03,188 INFO L85 PathProgramCache]: Analyzing trace with hash -610816679, now seen corresponding path program 1 times [2022-11-02 21:10:03,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:03,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605239292] [2022-11-02 21:10:03,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:03,189 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:03,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:03,190 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:03,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 21:10:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:03,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-02 21:10:03,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:05,838 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:05,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:12,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:12,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:12,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605239292] [2022-11-02 21:10:12,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1605239292] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:12,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:12,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:10:12,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510446354] [2022-11-02 21:10:12,082 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:12,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:10:12,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:12,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:10:12,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:10:12,083 INFO L87 Difference]: Start difference. First operand 6524 states and 8698 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:12,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:12,750 INFO L93 Difference]: Finished difference Result 9482 states and 12930 transitions. [2022-11-02 21:10:12,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:10:12,750 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:10:12,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:12,778 INFO L225 Difference]: With dead ends: 9482 [2022-11-02 21:10:12,778 INFO L226 Difference]: Without dead ends: 9480 [2022-11-02 21:10:12,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:10:12,781 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 318 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:12,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 1523 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 34 Unchecked, 0.0s Time] [2022-11-02 21:10:12,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9480 states. [2022-11-02 21:10:13,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9480 to 9446. [2022-11-02 21:10:13,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9446 states, 9445 states have (on average 1.364955002646903) internal successors, (12892), 9445 states have internal predecessors, (12892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:13,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9446 states to 9446 states and 12892 transitions. [2022-11-02 21:10:13,541 INFO L78 Accepts]: Start accepts. Automaton has 9446 states and 12892 transitions. Word has length 98 [2022-11-02 21:10:13,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:13,541 INFO L495 AbstractCegarLoop]: Abstraction has 9446 states and 12892 transitions. [2022-11-02 21:10:13,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:13,542 INFO L276 IsEmpty]: Start isEmpty. Operand 9446 states and 12892 transitions. [2022-11-02 21:10:13,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:10:13,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:13,553 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:13,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-11-02 21:10:13,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:13,769 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:13,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:13,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1626951511, now seen corresponding path program 1 times [2022-11-02 21:10:13,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:13,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410075189] [2022-11-02 21:10:13,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:13,772 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:13,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:13,774 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:13,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 21:10:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:14,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-02 21:10:14,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:16,358 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:16,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:26,756 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:26,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:26,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410075189] [2022-11-02 21:10:26,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410075189] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:26,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:26,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:10:26,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895194717] [2022-11-02 21:10:26,757 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:26,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:10:26,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:26,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:10:26,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=228, Unknown=3, NotChecked=0, Total=306 [2022-11-02 21:10:26,759 INFO L87 Difference]: Start difference. First operand 9446 states and 12892 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:27,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:27,564 INFO L93 Difference]: Finished difference Result 10966 states and 14931 transitions. [2022-11-02 21:10:27,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:10:27,564 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:10:27,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:27,582 INFO L225 Difference]: With dead ends: 10966 [2022-11-02 21:10:27,582 INFO L226 Difference]: Without dead ends: 10964 [2022-11-02 21:10:27,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=91, Invalid=286, Unknown=3, NotChecked=0, Total=380 [2022-11-02 21:10:27,586 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 257 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:27,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1471 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 29 Unchecked, 0.0s Time] [2022-11-02 21:10:27,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10964 states. [2022-11-02 21:10:28,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10964 to 10956. [2022-11-02 21:10:28,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10956 states, 10955 states have (on average 1.3618439068918302) internal successors, (14919), 10955 states have internal predecessors, (14919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:28,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10956 states to 10956 states and 14919 transitions. [2022-11-02 21:10:28,537 INFO L78 Accepts]: Start accepts. Automaton has 10956 states and 14919 transitions. Word has length 98 [2022-11-02 21:10:28,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:28,538 INFO L495 AbstractCegarLoop]: Abstraction has 10956 states and 14919 transitions. [2022-11-02 21:10:28,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:28,538 INFO L276 IsEmpty]: Start isEmpty. Operand 10956 states and 14919 transitions. [2022-11-02 21:10:28,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:10:28,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:28,555 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:28,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:28,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:28,769 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:28,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:28,770 INFO L85 PathProgramCache]: Analyzing trace with hash 729558233, now seen corresponding path program 1 times [2022-11-02 21:10:28,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:28,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048737243] [2022-11-02 21:10:28,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:28,772 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:28,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:28,773 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:28,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 21:10:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:29,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-02 21:10:29,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:31,552 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:31,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:40,569 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:40,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:40,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048737243] [2022-11-02 21:10:40,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048737243] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:40,570 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:40,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:10:40,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083472284] [2022-11-02 21:10:40,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:40,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:10:40,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:40,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:10:40,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=229, Unknown=2, NotChecked=0, Total=306 [2022-11-02 21:10:40,572 INFO L87 Difference]: Start difference. First operand 10956 states and 14919 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:41,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:41,345 INFO L93 Difference]: Finished difference Result 12892 states and 17653 transitions. [2022-11-02 21:10:41,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:10:41,345 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:10:41,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:41,367 INFO L225 Difference]: With dead ends: 12892 [2022-11-02 21:10:41,367 INFO L226 Difference]: Without dead ends: 12890 [2022-11-02 21:10:41,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=91, Invalid=287, Unknown=2, NotChecked=0, Total=380 [2022-11-02 21:10:41,372 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 627 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:41,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 1267 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 40 Unchecked, 0.0s Time] [2022-11-02 21:10:41,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12890 states. [2022-11-02 21:10:42,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12890 to 12632. [2022-11-02 21:10:42,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12632 states, 12631 states have (on average 1.3679835325785765) internal successors, (17279), 12631 states have internal predecessors, (17279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:42,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12632 states to 12632 states and 17279 transitions. [2022-11-02 21:10:42,136 INFO L78 Accepts]: Start accepts. Automaton has 12632 states and 17279 transitions. Word has length 98 [2022-11-02 21:10:42,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:42,137 INFO L495 AbstractCegarLoop]: Abstraction has 12632 states and 17279 transitions. [2022-11-02 21:10:42,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:42,137 INFO L276 IsEmpty]: Start isEmpty. Operand 12632 states and 17279 transitions. [2022-11-02 21:10:42,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:10:42,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:42,150 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:42,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-02 21:10:42,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:42,365 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:42,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:42,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1611432793, now seen corresponding path program 1 times [2022-11-02 21:10:42,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:42,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812413558] [2022-11-02 21:10:42,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:42,367 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:42,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:42,368 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:42,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 21:10:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:43,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-02 21:10:43,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:45,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:51,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:51,282 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:51,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812413558] [2022-11-02 21:10:51,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812413558] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:51,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:51,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:10:51,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563166827] [2022-11-02 21:10:51,284 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:51,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:10:51,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:51,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:10:51,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 21:10:51,286 INFO L87 Difference]: Start difference. First operand 12632 states and 17279 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:52,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:52,230 INFO L93 Difference]: Finished difference Result 13693 states and 18732 transitions. [2022-11-02 21:10:52,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:10:52,230 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:10:52,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:52,251 INFO L225 Difference]: With dead ends: 13693 [2022-11-02 21:10:52,251 INFO L226 Difference]: Without dead ends: 13691 [2022-11-02 21:10:52,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=91, Invalid=288, Unknown=1, NotChecked=0, Total=380 [2022-11-02 21:10:52,255 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 288 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:52,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1499 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 41 Unchecked, 0.0s Time] [2022-11-02 21:10:52,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13691 states. [2022-11-02 21:10:53,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13691 to 13685. [2022-11-02 21:10:53,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13685 states, 13684 states have (on average 1.3681672025723473) internal successors, (18722), 13684 states have internal predecessors, (18722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:53,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13685 states to 13685 states and 18722 transitions. [2022-11-02 21:10:53,096 INFO L78 Accepts]: Start accepts. Automaton has 13685 states and 18722 transitions. Word has length 98 [2022-11-02 21:10:53,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:53,096 INFO L495 AbstractCegarLoop]: Abstraction has 13685 states and 18722 transitions. [2022-11-02 21:10:53,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:53,097 INFO L276 IsEmpty]: Start isEmpty. Operand 13685 states and 18722 transitions. [2022-11-02 21:10:53,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:10:53,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:53,109 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:53,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:53,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:53,325 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:53,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:53,326 INFO L85 PathProgramCache]: Analyzing trace with hash 714039515, now seen corresponding path program 1 times [2022-11-02 21:10:53,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:53,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250478342] [2022-11-02 21:10:53,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:53,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:53,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:53,329 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:53,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 21:10:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:54,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-02 21:10:54,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:56,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:56,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:06,810 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:06,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250478342] [2022-11-02 21:11:06,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250478342] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:11:06,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:11:06,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:11:06,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555948169] [2022-11-02 21:11:06,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:06,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:11:06,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:06,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:11:06,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 21:11:06,812 INFO L87 Difference]: Start difference. First operand 13685 states and 18722 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:08,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:08,469 INFO L93 Difference]: Finished difference Result 27196 states and 37274 transitions. [2022-11-02 21:11:08,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:11:08,469 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:11:08,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:08,496 INFO L225 Difference]: With dead ends: 27196 [2022-11-02 21:11:08,496 INFO L226 Difference]: Without dead ends: 27194 [2022-11-02 21:11:08,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=91, Invalid=288, Unknown=1, NotChecked=0, Total=380 [2022-11-02 21:11:08,501 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 333 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:08,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1662 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 68 Unchecked, 0.0s Time] [2022-11-02 21:11:08,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27194 states. [2022-11-02 21:11:10,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27194 to 26934. [2022-11-02 21:11:10,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26934 states, 26933 states have (on average 1.371031819700739) internal successors, (36926), 26933 states have internal predecessors, (36926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:10,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26934 states to 26934 states and 36926 transitions. [2022-11-02 21:11:10,314 INFO L78 Accepts]: Start accepts. Automaton has 26934 states and 36926 transitions. Word has length 98 [2022-11-02 21:11:10,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:10,315 INFO L495 AbstractCegarLoop]: Abstraction has 26934 states and 36926 transitions. [2022-11-02 21:11:10,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:10,315 INFO L276 IsEmpty]: Start isEmpty. Operand 26934 states and 36926 transitions. [2022-11-02 21:11:10,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:11:10,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:10,337 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:10,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:10,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:10,538 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:10,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:10,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1314546595, now seen corresponding path program 1 times [2022-11-02 21:11:10,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:10,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104714439] [2022-11-02 21:11:10,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:10,541 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:10,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:10,543 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:10,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 21:11:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:11,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-02 21:11:11,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:13,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:21,393 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:21,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:21,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104714439] [2022-11-02 21:11:21,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104714439] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:11:21,394 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:11:21,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:11:21,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044494177] [2022-11-02 21:11:21,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:21,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:11:21,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:21,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:11:21,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 21:11:21,396 INFO L87 Difference]: Start difference. First operand 26934 states and 36926 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:24,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:24,640 INFO L93 Difference]: Finished difference Result 53346 states and 73202 transitions. [2022-11-02 21:11:24,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:11:24,641 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:11:24,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:24,682 INFO L225 Difference]: With dead ends: 53346 [2022-11-02 21:11:24,682 INFO L226 Difference]: Without dead ends: 53344 [2022-11-02 21:11:24,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=91, Invalid=288, Unknown=1, NotChecked=0, Total=380 [2022-11-02 21:11:24,689 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 228 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:24,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1515 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 29 Unchecked, 0.0s Time] [2022-11-02 21:11:24,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53344 states. [2022-11-02 21:11:28,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53344 to 53336. [2022-11-02 21:11:28,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53336 states, 53335 states have (on average 1.372269616574482) internal successors, (73190), 53335 states have internal predecessors, (73190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:28,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53336 states to 53336 states and 73190 transitions. [2022-11-02 21:11:28,173 INFO L78 Accepts]: Start accepts. Automaton has 53336 states and 73190 transitions. Word has length 98 [2022-11-02 21:11:28,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:28,173 INFO L495 AbstractCegarLoop]: Abstraction has 53336 states and 73190 transitions. [2022-11-02 21:11:28,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:28,174 INFO L276 IsEmpty]: Start isEmpty. Operand 53336 states and 73190 transitions. [2022-11-02 21:11:28,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:11:28,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:28,204 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:28,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-02 21:11:28,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:28,405 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:28,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:28,405 INFO L85 PathProgramCache]: Analyzing trace with hash -870645921, now seen corresponding path program 1 times [2022-11-02 21:11:28,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:28,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905925831] [2022-11-02 21:11:28,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:28,540 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:28,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:28,541 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:28,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bfb9f70-90c8-46c1-8425-e871c5b9ce2f/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 21:11:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:29,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 21:11:29,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:31,200 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:31,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:37,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:37,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905925831] [2022-11-02 21:11:37,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905925831] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:11:37,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:11:37,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-02 21:11:37,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066227277] [2022-11-02 21:11:37,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:37,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 21:11:37,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:37,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 21:11:37,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=432, Unknown=1, NotChecked=0, Total=552 [2022-11-02 21:11:37,881 INFO L87 Difference]: Start difference. First operand 53336 states and 73190 transitions. Second operand has 24 states, 24 states have (on average 8.083333333333334) internal successors, (194), 24 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)