./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae5c3c-9598-4aa6-a9bf-e706d2abfc50/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae5c3c-9598-4aa6-a9bf-e706d2abfc50/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae5c3c-9598-4aa6-a9bf-e706d2abfc50/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae5c3c-9598-4aa6-a9bf-e706d2abfc50/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae5c3c-9598-4aa6-a9bf-e706d2abfc50/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae5c3c-9598-4aa6-a9bf-e706d2abfc50/bin/uautomizer-YU5uOKAj3y --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 3fcf713e89fe507946e50cd7ac5d1f3269c91b4606b9da766f31c3632a8650aa --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:03:07,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:03:07,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:03:07,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:03:07,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:03:07,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:03:07,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:03:07,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:03:07,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:03:07,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:03:07,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:03:07,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:03:07,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:03:07,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:03:07,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:03:07,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:03:07,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:03:07,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:03:07,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:03:07,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:03:07,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:03:07,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:03:07,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:03:07,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:03:07,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:03:07,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:03:07,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:03:07,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:03:07,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:03:07,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:03:07,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:03:07,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:03:07,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:03:07,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:03:07,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:03:07,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:03:07,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:03:07,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:03:07,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:03:07,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:03:07,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:03:07,781 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae5c3c-9598-4aa6-a9bf-e706d2abfc50/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:03:07,841 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:03:07,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:03:07,842 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:03:07,842 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:03:07,850 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:03:07,850 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:03:07,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:03:07,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:03:07,852 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:03:07,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:03:07,852 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:03:07,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:03:07,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:03:07,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:03:07,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:03:07,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:03:07,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:03:07,854 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:03:07,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:03:07,854 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:03:07,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:03:07,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:03:07,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:03:07,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:03:07,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:03:07,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:03:07,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:03:07,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:03:07,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:03:07,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:03:07,856 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:03:07,857 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:03:07,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:03:07,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:03:07,857 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_50ae5c3c-9598-4aa6-a9bf-e706d2abfc50/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae5c3c-9598-4aa6-a9bf-e706d2abfc50/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fcf713e89fe507946e50cd7ac5d1f3269c91b4606b9da766f31c3632a8650aa [2021-11-13 18:03:08,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:03:08,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:03:08,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:03:08,251 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:03:08,251 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:03:08,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae5c3c-9598-4aa6-a9bf-e706d2abfc50/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-11-13 18:03:08,366 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae5c3c-9598-4aa6-a9bf-e706d2abfc50/bin/uautomizer-YU5uOKAj3y/data/00f5a2fb8/41f4d21c6ad14b8a9be22af62c51f13c/FLAG0689196b4 [2021-11-13 18:03:09,032 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:03:09,033 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae5c3c-9598-4aa6-a9bf-e706d2abfc50/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-11-13 18:03:09,048 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae5c3c-9598-4aa6-a9bf-e706d2abfc50/bin/uautomizer-YU5uOKAj3y/data/00f5a2fb8/41f4d21c6ad14b8a9be22af62c51f13c/FLAG0689196b4 [2021-11-13 18:03:09,251 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae5c3c-9598-4aa6-a9bf-e706d2abfc50/bin/uautomizer-YU5uOKAj3y/data/00f5a2fb8/41f4d21c6ad14b8a9be22af62c51f13c [2021-11-13 18:03:09,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:03:09,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:03:09,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:03:09,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:03:09,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:03:09,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:03:09" (1/1) ... [2021-11-13 18:03:09,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5a2e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:09, skipping insertion in model container [2021-11-13 18:03:09,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:03:09" (1/1) ... [2021-11-13 18:03:09,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:03:09,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:03:09,709 WARN L228 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_50ae5c3c-9598-4aa6-a9bf-e706d2abfc50/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12650,12663] [2021-11-13 18:03:09,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:03:09,814 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:03:09,942 WARN L228 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_50ae5c3c-9598-4aa6-a9bf-e706d2abfc50/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12650,12663] [2021-11-13 18:03:10,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:03:10,021 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:03:10,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:10 WrapperNode [2021-11-13 18:03:10,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:03:10,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:03:10,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:03:10,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:03:10,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:10" (1/1) ... [2021-11-13 18:03:10,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:10" (1/1) ... [2021-11-13 18:03:10,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:03:10,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:03:10,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:03:10,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:03:10,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:10" (1/1) ... [2021-11-13 18:03:10,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:10" (1/1) ... [2021-11-13 18:03:10,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:10" (1/1) ... [2021-11-13 18:03:10,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:10" (1/1) ... [2021-11-13 18:03:10,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:10" (1/1) ... [2021-11-13 18:03:10,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:10" (1/1) ... [2021-11-13 18:03:10,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:10" (1/1) ... [2021-11-13 18:03:10,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:03:10,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:03:10,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:03:10,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:03:10,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:10" (1/1) ... [2021-11-13 18:03:10,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:03:10,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae5c3c-9598-4aa6-a9bf-e706d2abfc50/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:03:10,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae5c3c-9598-4aa6-a9bf-e706d2abfc50/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:03:10,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ae5c3c-9598-4aa6-a9bf-e706d2abfc50/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:03:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:03:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:03:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:03:10,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:03:11,602 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:03:11,603 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:03:11,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:03:11 BoogieIcfgContainer [2021-11-13 18:03:11,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:03:11,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:03:11,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:03:11,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:03:11,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:03:09" (1/3) ... [2021-11-13 18:03:11,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344feab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:03:11, skipping insertion in model container [2021-11-13 18:03:11,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:03:10" (2/3) ... [2021-11-13 18:03:11,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344feab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:03:11, skipping insertion in model container [2021-11-13 18:03:11,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:03:11" (3/3) ... [2021-11-13 18:03:11,615 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-11-13 18:03:11,626 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:03:11,626 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:03:11,672 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:03:11,679 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:03:11,679 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:03:11,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 314 states, 312 states have (on average 1.7884615384615385) internal successors, (558), 313 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:11,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-13 18:03:11,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:11,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:03:11,719 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:03:11,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:11,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1531985210, now seen corresponding path program 1 times [2021-11-13 18:03:11,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:03:11,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792542973] [2021-11-13 18:03:11,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:11,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:03:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:12,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:03:12,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:03:12,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792542973] [2021-11-13 18:03:12,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792542973] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:12,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:12,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:03:12,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101569271] [2021-11-13 18:03:12,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:12,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:03:12,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:03:12,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:03:12,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:03:12,384 INFO L87 Difference]: Start difference. First operand has 314 states, 312 states have (on average 1.7884615384615385) internal successors, (558), 313 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:12,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:03:12,597 INFO L93 Difference]: Finished difference Result 577 states and 997 transitions. [2021-11-13 18:03:12,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:03:12,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-13 18:03:12,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:03:12,618 INFO L225 Difference]: With dead ends: 577 [2021-11-13 18:03:12,618 INFO L226 Difference]: Without dead ends: 434 [2021-11-13 18:03:12,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:03:12,626 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 220 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.32ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.15ms IncrementalHoareTripleChecker+Time [2021-11-13 18:03:12,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 1050 Invalid, 30 Unknown, 0 Unchecked, 19.32ms Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 71.15ms Time] [2021-11-13 18:03:12,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-13 18:03:12,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 431. [2021-11-13 18:03:12,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 1.6790697674418604) internal successors, (722), 430 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:12,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 722 transitions. [2021-11-13 18:03:12,710 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 722 transitions. Word has length 98 [2021-11-13 18:03:12,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:03:12,711 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 722 transitions. [2021-11-13 18:03:12,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:12,712 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 722 transitions. [2021-11-13 18:03:12,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-13 18:03:12,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:12,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:03:12,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:03:12,720 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:03:12,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:12,721 INFO L85 PathProgramCache]: Analyzing trace with hash 900005057, now seen corresponding path program 1 times [2021-11-13 18:03:12,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:03:12,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200108878] [2021-11-13 18:03:12,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:12,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:03:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:12,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:03:12,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:03:12,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200108878] [2021-11-13 18:03:12,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200108878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:12,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:12,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:03:12,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679987215] [2021-11-13 18:03:12,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:12,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:03:12,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:03:12,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:03:12,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:03:12,878 INFO L87 Difference]: Start difference. First operand 431 states and 722 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:12,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:03:12,956 INFO L93 Difference]: Finished difference Result 921 states and 1538 transitions. [2021-11-13 18:03:12,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:03:12,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-13 18:03:12,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:03:12,979 INFO L225 Difference]: With dead ends: 921 [2021-11-13 18:03:12,984 INFO L226 Difference]: Without dead ends: 667 [2021-11-13 18:03:12,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:03:12,988 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 200 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.75ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.36ms IncrementalHoareTripleChecker+Time [2021-11-13 18:03:12,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 1016 Invalid, 13 Unknown, 0 Unchecked, 3.75ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 31.36ms Time] [2021-11-13 18:03:12,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-11-13 18:03:13,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 663. [2021-11-13 18:03:13,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 662 states have (on average 1.6706948640483383) internal successors, (1106), 662 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:13,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1106 transitions. [2021-11-13 18:03:13,066 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1106 transitions. Word has length 101 [2021-11-13 18:03:13,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:03:13,069 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 1106 transitions. [2021-11-13 18:03:13,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:13,072 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1106 transitions. [2021-11-13 18:03:13,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-13 18:03:13,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:13,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:03:13,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:03:13,088 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:03:13,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:13,090 INFO L85 PathProgramCache]: Analyzing trace with hash -2056367170, now seen corresponding path program 1 times [2021-11-13 18:03:13,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:03:13,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098301908] [2021-11-13 18:03:13,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:13,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:03:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:13,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:03:13,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:03:13,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098301908] [2021-11-13 18:03:13,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098301908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:13,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:13,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:03:13,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685035591] [2021-11-13 18:03:13,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:13,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:03:13,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:03:13,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:03:13,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:03:13,331 INFO L87 Difference]: Start difference. First operand 663 states and 1106 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:13,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:03:13,414 INFO L93 Difference]: Finished difference Result 1599 states and 2656 transitions. [2021-11-13 18:03:13,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:03:13,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-13 18:03:13,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:03:13,426 INFO L225 Difference]: With dead ends: 1599 [2021-11-13 18:03:13,426 INFO L226 Difference]: Without dead ends: 1113 [2021-11-13 18:03:13,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:03:13,440 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 194 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.83ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.94ms IncrementalHoareTripleChecker+Time [2021-11-13 18:03:13,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 1017 Invalid, 13 Unknown, 0 Unchecked, 2.83ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 20.94ms Time] [2021-11-13 18:03:13,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2021-11-13 18:03:13,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1107. [2021-11-13 18:03:13,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1106 states have (on average 1.6582278481012658) internal successors, (1834), 1106 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:13,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1834 transitions. [2021-11-13 18:03:13,534 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1834 transitions. Word has length 104 [2021-11-13 18:03:13,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:03:13,535 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 1834 transitions. [2021-11-13 18:03:13,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:13,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1834 transitions. [2021-11-13 18:03:13,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-13 18:03:13,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:13,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:03:13,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:03:13,545 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:03:13,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:13,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1532440003, now seen corresponding path program 1 times [2021-11-13 18:03:13,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:03:13,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335670207] [2021-11-13 18:03:13,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:13,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:03:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:13,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:03:13,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:03:13,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335670207] [2021-11-13 18:03:13,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335670207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:13,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:13,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:03:13,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554256020] [2021-11-13 18:03:13,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:13,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:03:13,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:03:13,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:03:13,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:03:13,727 INFO L87 Difference]: Start difference. First operand 1107 states and 1834 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:13,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:03:13,856 INFO L93 Difference]: Finished difference Result 2895 states and 4772 transitions. [2021-11-13 18:03:13,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:03:13,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-13 18:03:13,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:03:13,872 INFO L225 Difference]: With dead ends: 2895 [2021-11-13 18:03:13,872 INFO L226 Difference]: Without dead ends: 1965 [2021-11-13 18:03:13,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:03:13,887 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 188 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.16ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.66ms IncrementalHoareTripleChecker+Time [2021-11-13 18:03:13,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 1018 Invalid, 13 Unknown, 0 Unchecked, 3.16ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 23.66ms Time] [2021-11-13 18:03:13,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2021-11-13 18:03:14,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1955. [2021-11-13 18:03:14,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1955 states, 1954 states have (on average 1.6427840327533265) internal successors, (3210), 1954 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:14,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 3210 transitions. [2021-11-13 18:03:14,053 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 3210 transitions. Word has length 107 [2021-11-13 18:03:14,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:03:14,054 INFO L470 AbstractCegarLoop]: Abstraction has 1955 states and 3210 transitions. [2021-11-13 18:03:14,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:14,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 3210 transitions. [2021-11-13 18:03:14,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-13 18:03:14,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:14,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:03:14,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:03:14,058 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:03:14,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:14,060 INFO L85 PathProgramCache]: Analyzing trace with hash 911548994, now seen corresponding path program 1 times [2021-11-13 18:03:14,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:03:14,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102453532] [2021-11-13 18:03:14,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:14,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:03:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:14,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:03:14,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:03:14,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102453532] [2021-11-13 18:03:14,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102453532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:14,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:14,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:03:14,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001814861] [2021-11-13 18:03:14,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:14,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:03:14,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:03:14,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:03:14,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:03:14,241 INFO L87 Difference]: Start difference. First operand 1955 states and 3210 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:15,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:03:15,117 INFO L93 Difference]: Finished difference Result 10211 states and 16886 transitions. [2021-11-13 18:03:15,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:03:15,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-13 18:03:15,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:03:15,193 INFO L225 Difference]: With dead ends: 10211 [2021-11-13 18:03:15,193 INFO L226 Difference]: Without dead ends: 8433 [2021-11-13 18:03:15,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:03:15,198 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 1873 mSDsluCounter, 3822 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 4343 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.39ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 193.62ms IncrementalHoareTripleChecker+Time [2021-11-13 18:03:15,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1873 Valid, 4343 Invalid, 183 Unknown, 0 Unchecked, 20.39ms Time], IncrementalHoareTripleChecker [8 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 193.62ms Time] [2021-11-13 18:03:15,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8433 states. [2021-11-13 18:03:15,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8433 to 3613. [2021-11-13 18:03:15,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3612 states have (on average 1.6403654485049834) internal successors, (5925), 3612 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:15,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 5925 transitions. [2021-11-13 18:03:15,573 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 5925 transitions. Word has length 110 [2021-11-13 18:03:15,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:03:15,574 INFO L470 AbstractCegarLoop]: Abstraction has 3613 states and 5925 transitions. [2021-11-13 18:03:15,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:15,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 5925 transitions. [2021-11-13 18:03:15,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-13 18:03:15,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:15,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:03:15,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:03:15,578 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:03:15,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:15,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1873814308, now seen corresponding path program 1 times [2021-11-13 18:03:15,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:03:15,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904060661] [2021-11-13 18:03:15,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:15,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:03:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:15,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:03:15,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:03:15,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904060661] [2021-11-13 18:03:15,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904060661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:15,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:15,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:03:15,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388048297] [2021-11-13 18:03:15,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:15,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:03:15,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:03:15,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:03:15,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:03:15,662 INFO L87 Difference]: Start difference. First operand 3613 states and 5925 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:16,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:03:16,255 INFO L93 Difference]: Finished difference Result 10593 states and 17463 transitions. [2021-11-13 18:03:16,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:03:16,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-13 18:03:16,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:03:16,308 INFO L225 Difference]: With dead ends: 10593 [2021-11-13 18:03:16,308 INFO L226 Difference]: Without dead ends: 7157 [2021-11-13 18:03:16,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:03:16,318 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 658 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.29ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.19ms IncrementalHoareTripleChecker+Time [2021-11-13 18:03:16,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 1569 Invalid, 42 Unknown, 0 Unchecked, 5.29ms Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 45.19ms Time] [2021-11-13 18:03:16,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2021-11-13 18:03:16,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 5368. [2021-11-13 18:03:16,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5368 states, 5367 states have (on average 1.6431898639836036) internal successors, (8819), 5367 states have internal predecessors, (8819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:16,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 8819 transitions. [2021-11-13 18:03:16,772 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 8819 transitions. Word has length 111 [2021-11-13 18:03:16,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:03:16,772 INFO L470 AbstractCegarLoop]: Abstraction has 5368 states and 8819 transitions. [2021-11-13 18:03:16,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:16,773 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 8819 transitions. [2021-11-13 18:03:16,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-13 18:03:16,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:16,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:03:16,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:03:16,778 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:03:16,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:16,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1978794569, now seen corresponding path program 1 times [2021-11-13 18:03:16,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:03:16,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562141015] [2021-11-13 18:03:16,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:16,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:03:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:16,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:03:16,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:03:16,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562141015] [2021-11-13 18:03:16,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562141015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:16,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:16,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:03:16,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365292382] [2021-11-13 18:03:16,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:16,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:03:16,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:03:16,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:03:16,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:03:16,866 INFO L87 Difference]: Start difference. First operand 5368 states and 8819 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:17,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:03:17,782 INFO L93 Difference]: Finished difference Result 15765 states and 25969 transitions. [2021-11-13 18:03:17,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:03:17,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-13 18:03:17,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:03:17,855 INFO L225 Difference]: With dead ends: 15765 [2021-11-13 18:03:17,856 INFO L226 Difference]: Without dead ends: 10574 [2021-11-13 18:03:17,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:03:17,873 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 656 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.97ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.64ms IncrementalHoareTripleChecker+Time [2021-11-13 18:03:17,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 1737 Invalid, 52 Unknown, 0 Unchecked, 5.97ms Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 115.64ms Time] [2021-11-13 18:03:17,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10574 states. [2021-11-13 18:03:18,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10574 to 7947. [2021-11-13 18:03:18,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7947 states, 7946 states have (on average 1.641580669519255) internal successors, (13044), 7946 states have internal predecessors, (13044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:18,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7947 states to 7947 states and 13044 transitions. [2021-11-13 18:03:18,569 INFO L78 Accepts]: Start accepts. Automaton has 7947 states and 13044 transitions. Word has length 112 [2021-11-13 18:03:18,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:03:18,569 INFO L470 AbstractCegarLoop]: Abstraction has 7947 states and 13044 transitions. [2021-11-13 18:03:18,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:18,570 INFO L276 IsEmpty]: Start isEmpty. Operand 7947 states and 13044 transitions. [2021-11-13 18:03:18,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-13 18:03:18,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:18,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:03:18,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:03:18,577 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:03:18,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:18,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2111780172, now seen corresponding path program 1 times [2021-11-13 18:03:18,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:03:18,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418914681] [2021-11-13 18:03:18,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:18,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:03:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:03:18,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:03:18,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418914681] [2021-11-13 18:03:18,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418914681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:18,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:18,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:03:18,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332733180] [2021-11-13 18:03:18,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:18,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:03:18,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:03:18,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:03:18,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:03:18,653 INFO L87 Difference]: Start difference. First operand 7947 states and 13044 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:19,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:03:19,368 INFO L93 Difference]: Finished difference Result 17498 states and 28779 transitions. [2021-11-13 18:03:19,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:03:19,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-13 18:03:19,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:03:19,402 INFO L225 Difference]: With dead ends: 17498 [2021-11-13 18:03:19,403 INFO L226 Difference]: Without dead ends: 12105 [2021-11-13 18:03:19,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:03:19,413 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 199 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.88ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.35ms IncrementalHoareTripleChecker+Time [2021-11-13 18:03:19,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 1141 Invalid, 7 Unknown, 0 Unchecked, 2.88ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 12.35ms Time] [2021-11-13 18:03:19,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12105 states. [2021-11-13 18:03:20,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12105 to 12103. [2021-11-13 18:03:20,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12103 states, 12102 states have (on average 1.6384068748967113) internal successors, (19828), 12102 states have internal predecessors, (19828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:20,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12103 states to 12103 states and 19828 transitions. [2021-11-13 18:03:20,275 INFO L78 Accepts]: Start accepts. Automaton has 12103 states and 19828 transitions. Word has length 113 [2021-11-13 18:03:20,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:03:20,276 INFO L470 AbstractCegarLoop]: Abstraction has 12103 states and 19828 transitions. [2021-11-13 18:03:20,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:20,279 INFO L276 IsEmpty]: Start isEmpty. Operand 12103 states and 19828 transitions. [2021-11-13 18:03:20,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-13 18:03:20,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:20,282 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:03:20,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:03:20,283 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:03:20,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:20,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1571535332, now seen corresponding path program 1 times [2021-11-13 18:03:20,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:03:20,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479662044] [2021-11-13 18:03:20,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:20,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:03:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:03:20,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:03:20,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479662044] [2021-11-13 18:03:20,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479662044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:20,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:20,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:03:20,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858982611] [2021-11-13 18:03:20,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:20,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:03:20,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:03:20,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:03:20,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:03:20,393 INFO L87 Difference]: Start difference. First operand 12103 states and 19828 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:21,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:03:21,501 INFO L93 Difference]: Finished difference Result 23535 states and 38662 transitions. [2021-11-13 18:03:21,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:03:21,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-13 18:03:21,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:03:21,556 INFO L225 Difference]: With dead ends: 23535 [2021-11-13 18:03:21,557 INFO L226 Difference]: Without dead ends: 17013 [2021-11-13 18:03:21,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:03:21,573 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 193 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.16ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.65ms IncrementalHoareTripleChecker+Time [2021-11-13 18:03:21,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 1116 Invalid, 7 Unknown, 0 Unchecked, 3.16ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 17.65ms Time] [2021-11-13 18:03:21,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17013 states. [2021-11-13 18:03:22,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17013 to 17011. [2021-11-13 18:03:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17011 states, 17010 states have (on average 1.6357436801881247) internal successors, (27824), 17010 states have internal predecessors, (27824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:22,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17011 states to 17011 states and 27824 transitions. [2021-11-13 18:03:22,580 INFO L78 Accepts]: Start accepts. Automaton has 17011 states and 27824 transitions. Word has length 113 [2021-11-13 18:03:22,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:03:22,581 INFO L470 AbstractCegarLoop]: Abstraction has 17011 states and 27824 transitions. [2021-11-13 18:03:22,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:22,581 INFO L276 IsEmpty]: Start isEmpty. Operand 17011 states and 27824 transitions. [2021-11-13 18:03:22,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-13 18:03:22,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:22,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:03:22,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 18:03:22,584 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:03:22,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:22,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1155143491, now seen corresponding path program 1 times [2021-11-13 18:03:22,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:03:22,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716204881] [2021-11-13 18:03:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:22,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:03:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:03:22,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:03:22,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716204881] [2021-11-13 18:03:22,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716204881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:22,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:22,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:03:22,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380200816] [2021-11-13 18:03:22,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:22,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:03:22,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:03:22,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:03:22,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:03:22,665 INFO L87 Difference]: Start difference. First operand 17011 states and 27824 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:24,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:03:24,830 INFO L93 Difference]: Finished difference Result 54370 states and 89164 transitions. [2021-11-13 18:03:24,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:03:24,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-13 18:03:24,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:03:24,943 INFO L225 Difference]: With dead ends: 54370 [2021-11-13 18:03:24,944 INFO L226 Difference]: Without dead ends: 37643 [2021-11-13 18:03:24,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:03:24,985 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 654 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.70ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.99ms IncrementalHoareTripleChecker+Time [2021-11-13 18:03:24,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [654 Valid, 1514 Invalid, 40 Unknown, 0 Unchecked, 4.70ms Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 50.99ms Time] [2021-11-13 18:03:25,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37643 states. [2021-11-13 18:03:26,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37643 to 27271. [2021-11-13 18:03:26,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27271 states, 27270 states have (on average 1.6332966629996333) internal successors, (44540), 27270 states have internal predecessors, (44540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:26,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27271 states to 27271 states and 44540 transitions. [2021-11-13 18:03:26,761 INFO L78 Accepts]: Start accepts. Automaton has 27271 states and 44540 transitions. Word has length 113 [2021-11-13 18:03:26,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:03:26,761 INFO L470 AbstractCegarLoop]: Abstraction has 27271 states and 44540 transitions. [2021-11-13 18:03:26,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:26,762 INFO L276 IsEmpty]: Start isEmpty. Operand 27271 states and 44540 transitions. [2021-11-13 18:03:26,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-13 18:03:26,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:26,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:03:26,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 18:03:26,765 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:03:26,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:26,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1280489340, now seen corresponding path program 1 times [2021-11-13 18:03:26,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:03:26,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121258935] [2021-11-13 18:03:26,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:26,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:03:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:26,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:03:26,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:03:26,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121258935] [2021-11-13 18:03:26,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121258935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:26,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:26,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:03:26,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109385905] [2021-11-13 18:03:26,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:26,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:03:26,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:03:26,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:03:26,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:03:26,834 INFO L87 Difference]: Start difference. First operand 27271 states and 44540 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:28,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:03:28,655 INFO L93 Difference]: Finished difference Result 53211 states and 87188 transitions. [2021-11-13 18:03:28,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:03:28,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-13 18:03:28,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:03:28,751 INFO L225 Difference]: With dead ends: 53211 [2021-11-13 18:03:28,752 INFO L226 Difference]: Without dead ends: 38175 [2021-11-13 18:03:28,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:03:28,792 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 187 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.00ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.48ms IncrementalHoareTripleChecker+Time [2021-11-13 18:03:28,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 1090 Invalid, 7 Unknown, 0 Unchecked, 3.00ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 12.48ms Time] [2021-11-13 18:03:28,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38175 states. [2021-11-13 18:03:31,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38175 to 38173. [2021-11-13 18:03:31,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38173 states, 38172 states have (on average 1.6304621188305564) internal successors, (62238), 38172 states have internal predecessors, (62238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:31,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38173 states to 38173 states and 62238 transitions. [2021-11-13 18:03:31,475 INFO L78 Accepts]: Start accepts. Automaton has 38173 states and 62238 transitions. Word has length 113 [2021-11-13 18:03:31,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:03:31,476 INFO L470 AbstractCegarLoop]: Abstraction has 38173 states and 62238 transitions. [2021-11-13 18:03:31,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:31,476 INFO L276 IsEmpty]: Start isEmpty. Operand 38173 states and 62238 transitions. [2021-11-13 18:03:31,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-13 18:03:31,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:31,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:03:31,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 18:03:31,479 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:03:31,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:31,480 INFO L85 PathProgramCache]: Analyzing trace with hash 760927820, now seen corresponding path program 1 times [2021-11-13 18:03:31,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:03:31,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476892249] [2021-11-13 18:03:31,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:31,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:03:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:31,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:03:31,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:03:31,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476892249] [2021-11-13 18:03:31,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476892249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:31,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:31,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:03:31,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000621550] [2021-11-13 18:03:31,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:31,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:03:31,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:03:31,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:03:31,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:03:31,561 INFO L87 Difference]: Start difference. First operand 38173 states and 62238 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:34,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:03:34,660 INFO L93 Difference]: Finished difference Result 83680 states and 137527 transitions. [2021-11-13 18:03:34,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:03:34,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-13 18:03:34,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:03:34,774 INFO L225 Difference]: With dead ends: 83680 [2021-11-13 18:03:34,774 INFO L226 Difference]: Without dead ends: 56799 [2021-11-13 18:03:34,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:03:34,805 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 205 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.77ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.36ms IncrementalHoareTripleChecker+Time [2021-11-13 18:03:34,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 1179 Invalid, 7 Unknown, 0 Unchecked, 3.77ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 14.36ms Time] [2021-11-13 18:03:34,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56799 states. [2021-11-13 18:03:38,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56799 to 56797. [2021-11-13 18:03:38,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56797 states, 56796 states have (on average 1.6322628354109445) internal successors, (92706), 56796 states have internal predecessors, (92706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:38,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56797 states to 56797 states and 92706 transitions. [2021-11-13 18:03:38,942 INFO L78 Accepts]: Start accepts. Automaton has 56797 states and 92706 transitions. Word has length 113 [2021-11-13 18:03:38,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:03:38,943 INFO L470 AbstractCegarLoop]: Abstraction has 56797 states and 92706 transitions. [2021-11-13 18:03:38,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:38,943 INFO L276 IsEmpty]: Start isEmpty. Operand 56797 states and 92706 transitions. [2021-11-13 18:03:38,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-13 18:03:38,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:38,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:03:38,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 18:03:38,948 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:03:38,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:38,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1396321872, now seen corresponding path program 1 times [2021-11-13 18:03:38,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:03:38,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633299742] [2021-11-13 18:03:38,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:38,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:03:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:03:39,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:03:39,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633299742] [2021-11-13 18:03:39,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633299742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:39,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:39,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:03:39,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442442500] [2021-11-13 18:03:39,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:39,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:03:39,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:03:39,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:03:39,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:03:39,034 INFO L87 Difference]: Start difference. First operand 56797 states and 92706 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:46,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:03:46,234 INFO L93 Difference]: Finished difference Result 182050 states and 297971 transitions. [2021-11-13 18:03:46,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:03:46,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-13 18:03:46,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:03:46,528 INFO L225 Difference]: With dead ends: 182050 [2021-11-13 18:03:46,529 INFO L226 Difference]: Without dead ends: 125485 [2021-11-13 18:03:46,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:03:46,611 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 652 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.79ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.86ms IncrementalHoareTripleChecker+Time [2021-11-13 18:03:46,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 1713 Invalid, 42 Unknown, 0 Unchecked, 5.79ms Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 48.86ms Time] [2021-11-13 18:03:46,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125485 states. [2021-11-13 18:03:52,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125485 to 90916. [2021-11-13 18:03:52,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90916 states, 90915 states have (on average 1.6285431446955947) internal successors, (148059), 90915 states have internal predecessors, (148059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:52,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90916 states to 90916 states and 148059 transitions. [2021-11-13 18:03:52,485 INFO L78 Accepts]: Start accepts. Automaton has 90916 states and 148059 transitions. Word has length 114 [2021-11-13 18:03:52,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:03:52,485 INFO L470 AbstractCegarLoop]: Abstraction has 90916 states and 148059 transitions. [2021-11-13 18:03:52,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:03:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand 90916 states and 148059 transitions. [2021-11-13 18:03:52,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-13 18:03:52,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:03:52,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:03:52,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 18:03:52,487 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:03:52,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:03:52,487 INFO L85 PathProgramCache]: Analyzing trace with hash 318216513, now seen corresponding path program 1 times [2021-11-13 18:03:52,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:03:52,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346833990] [2021-11-13 18:03:52,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:03:52,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:03:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:03:52,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:03:52,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:03:52,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346833990] [2021-11-13 18:03:52,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346833990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:03:52,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:03:52,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:03:52,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573417423] [2021-11-13 18:03:52,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:03:52,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:03:52,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:03:52,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:03:52,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:03:52,676 INFO L87 Difference]: Start difference. First operand 90916 states and 148059 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)