./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/sep10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/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_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/sep10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 246513a49efb434b9c960a67f526057a6e0f9037478ee43a300fa4a565ea6e54 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:45:26,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:45:26,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:45:26,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:45:26,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:45:26,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:45:26,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:45:26,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:45:26,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:45:26,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:45:26,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:45:26,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:45:26,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:45:26,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:45:26,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:45:26,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:45:26,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:45:26,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:45:26,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:45:26,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:45:26,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:45:26,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:45:26,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:45:26,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:45:26,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:45:26,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:45:26,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:45:26,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:45:26,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:45:26,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:45:26,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:45:26,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:45:26,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:45:26,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:45:26,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:45:26,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:45:26,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:45:26,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:45:26,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:45:26,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:45:26,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:45:26,146 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:45:26,187 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:45:26,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:45:26,189 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:45:26,189 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:45:26,190 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:45:26,190 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:45:26,191 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:45:26,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:45:26,191 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:45:26,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:45:26,193 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:45:26,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:45:26,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:45:26,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:45:26,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:45:26,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:45:26,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:45:26,194 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:45:26,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:45:26,195 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:45:26,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:45:26,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:45:26,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:45:26,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:45:26,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:45:26,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:45:26,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:45:26,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:45:26,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:45:26,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:45:26,197 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:45:26,198 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:45:26,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:45:26,198 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_5cb72300-d91b-40a2-8ca9-7230a192f916/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 246513a49efb434b9c960a67f526057a6e0f9037478ee43a300fa4a565ea6e54 [2022-11-02 20:45:26,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:45:26,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:45:26,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:45:26,522 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:45:26,523 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:45:26,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/reducercommutativity/sep10-2.i [2022-11-02 20:45:26,596 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/data/26d337bd6/380a7eb8ef454c338ff418867ec46f89/FLAG10dec151b [2022-11-02 20:45:27,124 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:45:27,125 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/sv-benchmarks/c/reducercommutativity/sep10-2.i [2022-11-02 20:45:27,132 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/data/26d337bd6/380a7eb8ef454c338ff418867ec46f89/FLAG10dec151b [2022-11-02 20:45:27,487 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/data/26d337bd6/380a7eb8ef454c338ff418867ec46f89 [2022-11-02 20:45:27,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:45:27,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:45:27,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:45:27,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:45:27,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:45:27,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:45:27" (1/1) ... [2022-11-02 20:45:27,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a8a891a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:27, skipping insertion in model container [2022-11-02 20:45:27,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:45:27" (1/1) ... [2022-11-02 20:45:27,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:45:27,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:45:27,737 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_5cb72300-d91b-40a2-8ca9-7230a192f916/sv-benchmarks/c/reducercommutativity/sep10-2.i[1293,1306] [2022-11-02 20:45:27,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:45:27,754 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:45:27,789 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_5cb72300-d91b-40a2-8ca9-7230a192f916/sv-benchmarks/c/reducercommutativity/sep10-2.i[1293,1306] [2022-11-02 20:45:27,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:45:27,808 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:45:27,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:27 WrapperNode [2022-11-02 20:45:27,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:45:27,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:45:27,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:45:27,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:45:27,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:27" (1/1) ... [2022-11-02 20:45:27,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:27" (1/1) ... [2022-11-02 20:45:27,866 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-11-02 20:45:27,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:45:27,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:45:27,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:45:27,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:45:27,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:27" (1/1) ... [2022-11-02 20:45:27,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:27" (1/1) ... [2022-11-02 20:45:27,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:27" (1/1) ... [2022-11-02 20:45:27,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:27" (1/1) ... [2022-11-02 20:45:27,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:27" (1/1) ... [2022-11-02 20:45:27,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:27" (1/1) ... [2022-11-02 20:45:27,913 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:27" (1/1) ... [2022-11-02 20:45:27,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:27" (1/1) ... [2022-11-02 20:45:27,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:45:27,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:45:27,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:45:27,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:45:27,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:27" (1/1) ... [2022-11-02 20:45:27,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:45:27,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:27,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:45:27,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:45:28,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:45:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:45:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:45:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:45:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:45:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:45:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:45:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:45:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2022-11-02 20:45:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2022-11-02 20:45:28,135 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:45:28,137 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:45:28,409 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:45:28,416 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:45:28,416 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:45:28,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:45:28 BoogieIcfgContainer [2022-11-02 20:45:28,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:45:28,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:45:28,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:45:28,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:45:28,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:45:27" (1/3) ... [2022-11-02 20:45:28,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2379374f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:45:28, skipping insertion in model container [2022-11-02 20:45:28,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:27" (2/3) ... [2022-11-02 20:45:28,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2379374f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:45:28, skipping insertion in model container [2022-11-02 20:45:28,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:45:28" (3/3) ... [2022-11-02 20:45:28,441 INFO L112 eAbstractionObserver]: Analyzing ICFG sep10-2.i [2022-11-02 20:45:28,474 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:45:28,474 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:45:28,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:45:28,575 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;@6203774d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:45:28,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:45:28,583 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:45:28,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:45:28,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:28,594 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:28,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:28,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:28,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1312709850, now seen corresponding path program 1 times [2022-11-02 20:45:28,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:28,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899236328] [2022-11-02 20:45:28,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:28,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:29,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:45:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:29,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 20:45:29,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:29,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:45:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:29,035 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 20:45:29,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:29,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899236328] [2022-11-02 20:45:29,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899236328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:29,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:29,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:45:29,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252963385] [2022-11-02 20:45:29,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:29,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:45:29,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:29,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:45:29,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:45:29,079 INFO L87 Difference]: Start difference. First operand has 27 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:45:29,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:29,115 INFO L93 Difference]: Finished difference Result 52 states and 73 transitions. [2022-11-02 20:45:29,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:45:29,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-11-02 20:45:29,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:29,126 INFO L225 Difference]: With dead ends: 52 [2022-11-02 20:45:29,126 INFO L226 Difference]: Without dead ends: 25 [2022-11-02 20:45:29,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:45:29,134 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:29,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 58 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:45:29,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-02 20:45:29,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-11-02 20:45:29,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:45:29,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2022-11-02 20:45:29,176 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 28 [2022-11-02 20:45:29,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:29,177 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-11-02 20:45:29,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:45:29,178 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2022-11-02 20:45:29,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 20:45:29,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:29,180 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:29,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:45:29,181 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:29,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:29,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1845794557, now seen corresponding path program 1 times [2022-11-02 20:45:29,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:29,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74897767] [2022-11-02 20:45:29,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:29,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:29,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 20:45:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:29,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:45:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:29,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:45:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 20:45:29,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:29,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74897767] [2022-11-02 20:45:29,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74897767] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:29,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447753618] [2022-11-02 20:45:29,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:29,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:29,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:29,332 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:29,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:45:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:29,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:45:29,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:45:29,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:29,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447753618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:29,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:45:29,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-02 20:45:29,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710724798] [2022-11-02 20:45:29,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:29,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:45:29,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:29,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:45:29,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:45:29,521 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:45:29,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:29,538 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2022-11-02 20:45:29,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:45:29,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-11-02 20:45:29,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:29,541 INFO L225 Difference]: With dead ends: 45 [2022-11-02 20:45:29,541 INFO L226 Difference]: Without dead ends: 27 [2022-11-02 20:45:29,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:45:29,545 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:29,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 50 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:45:29,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-02 20:45:29,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-11-02 20:45:29,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:45:29,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-11-02 20:45:29,561 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 30 [2022-11-02 20:45:29,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:29,562 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-11-02 20:45:29,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:45:29,563 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-11-02 20:45:29,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-02 20:45:29,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:29,565 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:29,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:29,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-02 20:45:29,782 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:29,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:29,783 INFO L85 PathProgramCache]: Analyzing trace with hash -701057785, now seen corresponding path program 1 times [2022-11-02 20:45:29,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:29,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666963067] [2022-11-02 20:45:29,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:29,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:29,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 20:45:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:30,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:45:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:30,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:45:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:30,043 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:45:30,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:30,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666963067] [2022-11-02 20:45:30,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666963067] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:30,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919081173] [2022-11-02 20:45:30,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:30,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:30,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:30,046 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:30,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:45:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:30,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:45:30,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:30,177 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:45:30,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:30,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919081173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:30,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:45:30,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-02 20:45:30,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704691272] [2022-11-02 20:45:30,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:30,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:45:30,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:30,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:45:30,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:45:30,181 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:45:30,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:30,200 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-11-02 20:45:30,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:45:30,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2022-11-02 20:45:30,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:30,205 INFO L225 Difference]: With dead ends: 41 [2022-11-02 20:45:30,206 INFO L226 Difference]: Without dead ends: 27 [2022-11-02 20:45:30,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:45:30,207 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:30,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 49 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:45:30,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-02 20:45:30,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2022-11-02 20:45:30,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:45:30,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-11-02 20:45:30,219 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 39 [2022-11-02 20:45:30,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:30,222 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-11-02 20:45:30,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:45:30,223 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-11-02 20:45:30,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-02 20:45:30,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:30,227 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:30,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:30,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:30,442 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:30,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:30,443 INFO L85 PathProgramCache]: Analyzing trace with hash -235909079, now seen corresponding path program 1 times [2022-11-02 20:45:30,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:30,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259298657] [2022-11-02 20:45:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:30,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:30,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 20:45:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:30,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 20:45:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:30,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:45:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:30,639 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 20:45:30,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:30,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259298657] [2022-11-02 20:45:30,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259298657] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:30,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526591801] [2022-11-02 20:45:30,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:30,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:30,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:30,642 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:30,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:45:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:30,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:45:30,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:30,791 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 20:45:30,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:30,841 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 20:45:30,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526591801] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:30,841 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:30,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-11-02 20:45:30,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996460308] [2022-11-02 20:45:30,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:30,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:45:30,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:30,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:45:30,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:45:30,844 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-02 20:45:30,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:30,895 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2022-11-02 20:45:30,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:45:30,896 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 41 [2022-11-02 20:45:30,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:30,897 INFO L225 Difference]: With dead ends: 58 [2022-11-02 20:45:30,898 INFO L226 Difference]: Without dead ends: 37 [2022-11-02 20:45:30,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:45:30,899 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:30,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 156 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:45:30,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-02 20:45:30,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2022-11-02 20:45:30,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:45:30,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-11-02 20:45:30,907 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 41 [2022-11-02 20:45:30,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:30,907 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-11-02 20:45:30,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-02 20:45:30,908 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-11-02 20:45:30,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-02 20:45:30,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:30,909 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:30,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:31,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:31,130 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:31,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:31,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1946429025, now seen corresponding path program 2 times [2022-11-02 20:45:31,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:31,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744101636] [2022-11-02 20:45:31,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:31,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:31,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-02 20:45:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:31,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 20:45:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:31,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-02 20:45:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:31,310 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-02 20:45:31,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:31,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744101636] [2022-11-02 20:45:31,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744101636] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:31,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012634989] [2022-11-02 20:45:31,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:45:31,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:31,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:31,314 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:31,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:45:31,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:45:31,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:45:31,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:45:31,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:31,611 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-02 20:45:31,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:31,734 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-02 20:45:31,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012634989] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:31,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:31,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-11-02 20:45:31,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560461578] [2022-11-02 20:45:31,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:31,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:45:31,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:31,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:45:31,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:45:31,741 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 20:45:31,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:31,843 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2022-11-02 20:45:31,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:45:31,844 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2022-11-02 20:45:31,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:31,847 INFO L225 Difference]: With dead ends: 74 [2022-11-02 20:45:31,847 INFO L226 Difference]: Without dead ends: 50 [2022-11-02 20:45:31,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:45:31,850 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 17 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:31,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 111 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:45:31,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-02 20:45:31,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-11-02 20:45:31,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 states have internal predecessors, (49), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:45:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2022-11-02 20:45:31,877 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 56 [2022-11-02 20:45:31,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:31,877 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2022-11-02 20:45:31,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 20:45:31,878 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2022-11-02 20:45:31,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-02 20:45:31,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:31,884 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:31,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:32,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:32,098 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:32,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:32,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1341839115, now seen corresponding path program 3 times [2022-11-02 20:45:32,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:32,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938382201] [2022-11-02 20:45:32,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:32,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:32,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:45:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:32,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:45:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:32,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-02 20:45:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:32,330 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-02 20:45:32,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:32,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938382201] [2022-11-02 20:45:32,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938382201] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:32,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625577631] [2022-11-02 20:45:32,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:45:32,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:32,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:32,333 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:32,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:45:32,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 20:45:32,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:45:32,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:45:32,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-02 20:45:32,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-02 20:45:32,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625577631] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:32,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:32,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-11-02 20:45:32,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983896747] [2022-11-02 20:45:32,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:32,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:45:32,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:32,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:45:32,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:45:32,536 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:45:32,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:32,586 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2022-11-02 20:45:32,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:45:32,588 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 70 [2022-11-02 20:45:32,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:32,592 INFO L225 Difference]: With dead ends: 86 [2022-11-02 20:45:32,592 INFO L226 Difference]: Without dead ends: 61 [2022-11-02 20:45:32,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:45:32,595 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 26 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:32,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 80 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:45:32,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-02 20:45:32,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-02 20:45:32,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.1607142857142858) internal successors, (65), 56 states have internal predecessors, (65), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:45:32,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2022-11-02 20:45:32,614 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 70 [2022-11-02 20:45:32,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:32,615 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2022-11-02 20:45:32,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:45:32,615 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2022-11-02 20:45:32,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-02 20:45:32,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:32,621 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:32,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:32,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:45:32,834 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:32,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:32,835 INFO L85 PathProgramCache]: Analyzing trace with hash -189786485, now seen corresponding path program 4 times [2022-11-02 20:45:32,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:32,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911988106] [2022-11-02 20:45:32,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:32,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:33,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:45:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:33,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-02 20:45:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:33,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-02 20:45:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:33,412 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-11-02 20:45:33,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:33,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911988106] [2022-11-02 20:45:33,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911988106] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:33,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860016461] [2022-11-02 20:45:33,413 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:45:33,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:33,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:33,415 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:33,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:45:33,573 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:45:33,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:45:33,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:45:33,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 244 proven. 51 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-11-02 20:45:33,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:33,785 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-11-02 20:45:33,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860016461] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:33,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:33,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-11-02 20:45:33,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366488157] [2022-11-02 20:45:33,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:33,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:45:33,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:33,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:45:33,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:45:33,788 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:45:33,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:33,848 INFO L93 Difference]: Finished difference Result 110 states and 139 transitions. [2022-11-02 20:45:33,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:45:33,849 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 106 [2022-11-02 20:45:33,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:33,851 INFO L225 Difference]: With dead ends: 110 [2022-11-02 20:45:33,852 INFO L226 Difference]: Without dead ends: 73 [2022-11-02 20:45:33,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 211 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:45:33,857 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 43 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:33,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 88 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:45:33,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-02 20:45:33,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-11-02 20:45:33,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 68 states have internal predecessors, (81), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:45:33,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 87 transitions. [2022-11-02 20:45:33,875 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 87 transitions. Word has length 106 [2022-11-02 20:45:33,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:33,876 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 87 transitions. [2022-11-02 20:45:33,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:45:33,876 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 87 transitions. [2022-11-02 20:45:33,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-02 20:45:33,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:33,878 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:33,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:34,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:34,079 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:34,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:34,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1263048203, now seen corresponding path program 5 times [2022-11-02 20:45:34,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:34,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044997982] [2022-11-02 20:45:34,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:34,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:34,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:45:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:34,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:45:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:34,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-02 20:45:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:34,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked. [2022-11-02 20:45:34,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:34,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044997982] [2022-11-02 20:45:34,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044997982] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:34,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970753240] [2022-11-02 20:45:34,441 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:45:34,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:34,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:34,447 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:34,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:45:35,178 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-11-02 20:45:35,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:45:35,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:45:35,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:35,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 650 proven. 4 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2022-11-02 20:45:35,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:35,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked. [2022-11-02 20:45:35,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970753240] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:35,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:35,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-02 20:45:35,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46344497] [2022-11-02 20:45:35,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:35,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:45:35,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:35,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:45:35,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:45:35,268 INFO L87 Difference]: Start difference. First operand 73 states and 87 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:45:35,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:35,301 INFO L93 Difference]: Finished difference Result 122 states and 150 transitions. [2022-11-02 20:45:35,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:45:35,301 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 142 [2022-11-02 20:45:35,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:35,302 INFO L225 Difference]: With dead ends: 122 [2022-11-02 20:45:35,303 INFO L226 Difference]: Without dead ends: 81 [2022-11-02 20:45:35,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:45:35,304 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:35,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 95 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:45:35,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-02 20:45:35,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-11-02 20:45:35,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 76 states have (on average 1.1710526315789473) internal successors, (89), 76 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:45:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2022-11-02 20:45:35,311 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 142 [2022-11-02 20:45:35,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:35,312 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2022-11-02 20:45:35,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:45:35,312 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2022-11-02 20:45:35,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-02 20:45:35,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:35,314 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:35,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:35,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:35,538 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:35,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:35,539 INFO L85 PathProgramCache]: Analyzing trace with hash -660788349, now seen corresponding path program 6 times [2022-11-02 20:45:35,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:35,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862313838] [2022-11-02 20:45:35,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:35,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:35,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:45:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:35,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:45:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:35,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:45:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:35,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1546 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked. [2022-11-02 20:45:35,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:35,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862313838] [2022-11-02 20:45:35,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862313838] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:35,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363043463] [2022-11-02 20:45:35,987 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:45:35,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:35,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:35,991 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:35,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:45:36,743 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-11-02 20:45:36,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:45:36,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:45:36,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:36,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1546 backedges. 650 proven. 36 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2022-11-02 20:45:36,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1546 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked. [2022-11-02 20:45:36,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363043463] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:36,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:36,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-11-02 20:45:36,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321541161] [2022-11-02 20:45:36,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:36,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:45:36,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:36,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:45:36,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:45:36,928 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:45:36,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:36,971 INFO L93 Difference]: Finished difference Result 128 states and 155 transitions. [2022-11-02 20:45:36,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:45:36,973 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 150 [2022-11-02 20:45:36,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:36,975 INFO L225 Difference]: With dead ends: 128 [2022-11-02 20:45:36,975 INFO L226 Difference]: Without dead ends: 87 [2022-11-02 20:45:36,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 298 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:45:36,977 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 9 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:36,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 95 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:45:36,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-02 20:45:36,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-11-02 20:45:36,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.1585365853658536) internal successors, (95), 82 states have internal predecessors, (95), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:45:36,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 101 transitions. [2022-11-02 20:45:36,987 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 101 transitions. Word has length 150 [2022-11-02 20:45:36,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:36,987 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 101 transitions. [2022-11-02 20:45:36,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:45:36,988 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 101 transitions. [2022-11-02 20:45:36,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 20:45:36,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:36,990 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:37,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:37,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-02 20:45:37,203 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:37,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:37,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1766594339, now seen corresponding path program 7 times [2022-11-02 20:45:37,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:37,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002785147] [2022-11-02 20:45:37,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:37,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:40,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:45:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:41,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:45:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:41,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-02 20:45:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:41,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 0 proven. 1305 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2022-11-02 20:45:41,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:41,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002785147] [2022-11-02 20:45:41,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002785147] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:41,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935568289] [2022-11-02 20:45:41,980 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 20:45:41,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:41,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:41,981 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:42,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:45:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:42,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-02 20:45:42,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:43,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 0 proven. 1305 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2022-11-02 20:45:43,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 0 proven. 1309 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-11-02 20:45:44,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935568289] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:44,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:44,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 21] total 38 [2022-11-02 20:45:44,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021613285] [2022-11-02 20:45:44,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:44,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-02 20:45:44,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:44,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-02 20:45:44,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1308, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 20:45:44,850 INFO L87 Difference]: Start difference. First operand 87 states and 101 transitions. Second operand has 38 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 31 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 20:45:45,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:45,863 INFO L93 Difference]: Finished difference Result 293 states and 410 transitions. [2022-11-02 20:45:45,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:45:45,864 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 31 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) Word has length 156 [2022-11-02 20:45:45,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:45,874 INFO L225 Difference]: With dead ends: 293 [2022-11-02 20:45:45,874 INFO L226 Difference]: Without dead ends: 289 [2022-11-02 20:45:45,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 309 SyntacticMatches, 12 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=105, Invalid=1377, Unknown=0, NotChecked=0, Total=1482 [2022-11-02 20:45:45,876 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 65 mSDsluCounter, 3126 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 3257 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:45,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 3257 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:45:45,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-11-02 20:45:45,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 229. [2022-11-02 20:45:45,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 221 states have (on average 1.2714932126696832) internal successors, (281), 222 states have internal predecessors, (281), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-02 20:45:45,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 295 transitions. [2022-11-02 20:45:45,918 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 295 transitions. Word has length 156 [2022-11-02 20:45:45,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:45,918 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 295 transitions. [2022-11-02 20:45:45,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 31 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 20:45:45,919 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 295 transitions. [2022-11-02 20:45:45,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 20:45:45,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:45,922 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 29, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:45,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:46,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:45:46,144 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:46,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:46,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1086535969, now seen corresponding path program 1 times [2022-11-02 20:45:46,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:46,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354913072] [2022-11-02 20:45:46,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:46,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:52,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:45:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:52,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:45:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:52,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-02 20:45:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:53,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 324 proven. 1045 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-11-02 20:45:53,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:53,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354913072] [2022-11-02 20:45:53,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354913072] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:53,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743872659] [2022-11-02 20:45:53,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:53,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:53,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:53,808 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:53,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:45:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:54,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-02 20:45:54,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:54,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-02 20:45:54,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-11-02 20:45:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 651 proven. 487 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2022-11-02 20:45:56,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:58,819 INFO L356 Elim1Store]: treesize reduction 4, result has 73.3 percent of original size [2022-11-02 20:45:58,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2022-11-02 20:45:58,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 676 proven. 460 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2022-11-02 20:45:58,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743872659] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:58,925 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:58,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 22, 20] total 75 [2022-11-02 20:45:58,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375343736] [2022-11-02 20:45:58,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:58,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-11-02 20:45:58,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:58,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-11-02 20:45:58,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=5272, Unknown=0, NotChecked=0, Total=5550 [2022-11-02 20:45:58,931 INFO L87 Difference]: Start difference. First operand 229 states and 295 transitions. Second operand has 75 states, 73 states have (on average 2.7260273972602738) internal successors, (199), 72 states have internal predecessors, (199), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-02 20:46:07,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:07,937 INFO L93 Difference]: Finished difference Result 885 states and 1206 transitions. [2022-11-02 20:46:07,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-11-02 20:46:07,938 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 73 states have (on average 2.7260273972602738) internal successors, (199), 72 states have internal predecessors, (199), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 156 [2022-11-02 20:46:07,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:07,947 INFO L225 Difference]: With dead ends: 885 [2022-11-02 20:46:07,947 INFO L226 Difference]: Without dead ends: 636 [2022-11-02 20:46:07,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 322 SyntacticMatches, 12 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 5106 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=1031, Invalid=17329, Unknown=0, NotChecked=0, Total=18360 [2022-11-02 20:46:07,956 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 264 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 2768 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 3922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 962 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:07,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 1146 Invalid, 3922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2768 Invalid, 0 Unknown, 962 Unchecked, 2.8s Time] [2022-11-02 20:46:07,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-11-02 20:46:08,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 577. [2022-11-02 20:46:08,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 560 states have (on average 1.3214285714285714) internal successors, (740), 563 states have internal predecessors, (740), 9 states have call successors, (9), 4 states have call predecessors, (9), 7 states have return successors, (47), 9 states have call predecessors, (47), 9 states have call successors, (47) [2022-11-02 20:46:08,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 796 transitions. [2022-11-02 20:46:08,049 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 796 transitions. Word has length 156 [2022-11-02 20:46:08,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:08,050 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 796 transitions. [2022-11-02 20:46:08,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 73 states have (on average 2.7260273972602738) internal successors, (199), 72 states have internal predecessors, (199), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-02 20:46:08,050 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 796 transitions. [2022-11-02 20:46:08,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 20:46:08,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:08,058 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 29, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:46:08,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:08,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 20:46:08,271 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:08,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:08,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1508428901, now seen corresponding path program 2 times [2022-11-02 20:46:08,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:08,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282559336] [2022-11-02 20:46:08,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:08,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:14,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:46:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:15,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:46:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:15,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-02 20:46:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 326 proven. 1092 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-02 20:46:16,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:16,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282559336] [2022-11-02 20:46:16,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282559336] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:46:16,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628338] [2022-11-02 20:46:16,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:46:16,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:16,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:16,047 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:46:16,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:46:16,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:46:16,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:46:16,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 125 conjunts are in the unsatisfiable core [2022-11-02 20:46:16,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:16,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:46:16,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:46:16,885 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 33 [2022-11-02 20:46:17,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:46:17,159 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2022-11-02 20:46:17,211 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-02 20:46:17,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-02 20:46:17,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-02 20:46:17,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-02 20:46:17,335 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-02 20:46:17,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-02 20:46:17,421 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-02 20:46:17,518 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2022-11-02 20:46:17,635 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:46:17,635 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 29 [2022-11-02 20:46:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 27 proven. 1416 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-02 20:46:18,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:46:55,433 INFO L356 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2022-11-02 20:46:55,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 30 [2022-11-02 20:46:56,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 367 proven. 974 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2022-11-02 20:46:56,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628338] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:46:56,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:46:56,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 49, 44] total 96 [2022-11-02 20:46:56,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703921856] [2022-11-02 20:46:56,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:46:56,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-02 20:46:56,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:56,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-02 20:46:56,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=8682, Unknown=30, NotChecked=0, Total=9120 [2022-11-02 20:46:56,467 INFO L87 Difference]: Start difference. First operand 577 states and 796 transitions. Second operand has 96 states, 96 states have (on average 2.3958333333333335) internal successors, (230), 95 states have internal predecessors, (230), 6 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-02 20:47:25,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:25,931 INFO L93 Difference]: Finished difference Result 2406 states and 3489 transitions. [2022-11-02 20:47:25,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-11-02 20:47:25,935 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.3958333333333335) internal successors, (230), 95 states have internal predecessors, (230), 6 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) Word has length 156 [2022-11-02 20:47:25,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:25,947 INFO L225 Difference]: With dead ends: 2406 [2022-11-02 20:47:25,948 INFO L226 Difference]: Without dead ends: 1753 [2022-11-02 20:47:25,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 285 SyntacticMatches, 13 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5903 ImplicationChecksByTransitivity, 65.8s TimeCoverageRelationStatistics Valid=1078, Invalid=18624, Unknown=38, NotChecked=0, Total=19740 [2022-11-02 20:47:25,957 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 204 mSDsluCounter, 4207 mSDsCounter, 0 mSdLazyCounter, 3256 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 4287 SdHoareTripleChecker+Invalid, 8101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 3256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4794 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:25,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 4287 Invalid, 8101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 3256 Invalid, 0 Unknown, 4794 Unchecked, 2.6s Time] [2022-11-02 20:47:25,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2022-11-02 20:47:26,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1617. [2022-11-02 20:47:26,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1569 states have (on average 1.354365838113448) internal successors, (2125), 1590 states have internal predecessors, (2125), 20 states have call successors, (20), 9 states have call predecessors, (20), 27 states have return successors, (212), 17 states have call predecessors, (212), 20 states have call successors, (212) [2022-11-02 20:47:26,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2357 transitions. [2022-11-02 20:47:26,207 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2357 transitions. Word has length 156 [2022-11-02 20:47:26,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:26,208 INFO L495 AbstractCegarLoop]: Abstraction has 1617 states and 2357 transitions. [2022-11-02 20:47:26,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.3958333333333335) internal successors, (230), 95 states have internal predecessors, (230), 6 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-02 20:47:26,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2357 transitions. [2022-11-02 20:47:26,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 20:47:26,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:26,230 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 29, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:26,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:26,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:47:26,447 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:26,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:26,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1248509279, now seen corresponding path program 3 times [2022-11-02 20:47:26,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:26,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492641611] [2022-11-02 20:47:26,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:26,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:32,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:47:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:32,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:47:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:33,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-02 20:47:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 648 proven. 773 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-02 20:47:34,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:34,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492641611] [2022-11-02 20:47:34,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492641611] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:47:34,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342716013] [2022-11-02 20:47:34,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:47:34,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:47:34,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:34,099 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:47:34,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cb72300-d91b-40a2-8ca9-7230a192f916/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:47:35,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2022-11-02 20:47:35,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:47:35,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-02 20:47:35,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:36,260 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-02 20:47:36,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2022-11-02 20:47:36,379 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-02 20:47:36,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2022-11-02 20:47:36,498 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-02 20:47:36,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2022-11-02 20:47:36,605 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-02 20:47:36,606 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2022-11-02 20:47:36,702 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-02 20:47:36,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2022-11-02 20:47:36,733 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-02 20:47:36,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-11-02 20:47:36,918 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-02 20:47:36,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 46 [2022-11-02 20:47:37,130 INFO L356 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2022-11-02 20:47:37,131 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 63 [2022-11-02 20:47:37,430 INFO L356 Elim1Store]: treesize reduction 26, result has 50.0 percent of original size [2022-11-02 20:47:37,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 78 treesize of output 81 [2022-11-02 20:47:37,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2022-11-02 20:48:24,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 856 proven. 346 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2022-11-02 20:48:24,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:48:30,980 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~2#1_85| Int)) (or (not (<= |v_ULTIMATE.start_main_~i~2#1_85| (+ |c_ULTIMATE.start_main_~i~2#1| 1))) (forall ((v_ArrVal_758 Int)) (<= 0 (let ((.cse0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base|) (+ |c_ULTIMATE.start_main_~#x~0#1.offset| (* |v_ULTIMATE.start_main_~i~2#1_85| 4)) v_ArrVal_758) (+ 32 |c_ULTIMATE.start_main_~#x~0#1.offset|)))) (+ (* 2 (div (- .cse0) 2)) .cse0)))))) is different from false [2022-11-02 20:49:03,129 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~2#1_86| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~2#1_85| Int) (v_ArrVal_758 Int) (v_ArrVal_756 Int)) (or (not (<= |v_ULTIMATE.start_main_~i~2#1_85| (+ |v_ULTIMATE.start_main_~i~2#1_86| 1))) (<= 0 (let ((.cse0 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~2#1_86| 4) |c_ULTIMATE.start_main_~#x~0#1.offset|) v_ArrVal_756) (+ |c_ULTIMATE.start_main_~#x~0#1.offset| (* |v_ULTIMATE.start_main_~i~2#1_85| 4)) v_ArrVal_758) (+ 32 |c_ULTIMATE.start_main_~#x~0#1.offset|)))) (+ (* (div (- .cse0) 2) 2) .cse0))))) (not (<= |v_ULTIMATE.start_main_~i~2#1_86| (+ |c_ULTIMATE.start_main_~i~2#1| 1))))) is different from false