./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8141a8f6-571e-4fc7-9a7d-6f393c270a6f/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8141a8f6-571e-4fc7-9a7d-6f393c270a6f/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8141a8f6-571e-4fc7-9a7d-6f393c270a6f/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8141a8f6-571e-4fc7-9a7d-6f393c270a6f/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8141a8f6-571e-4fc7-9a7d-6f393c270a6f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8141a8f6-571e-4fc7-9a7d-6f393c270a6f/bin/uautomizer-vX5HgA9Q3a --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 16e0086acf2f158eb0b3309fc7ab7b15830d1af8d2ef9923a4f4e2311d9d7a3f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 17:25:47,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:25:47,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:25:47,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:25:47,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:25:47,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:25:47,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:25:47,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:25:47,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:25:47,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:25:47,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:25:47,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:25:47,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:25:47,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:25:47,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:25:47,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:25:47,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:25:47,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:25:47,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:25:47,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:25:47,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:25:47,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:25:47,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:25:47,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:25:47,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:25:47,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:25:47,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:25:47,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:25:47,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:25:47,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:25:47,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:25:47,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:25:47,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:25:47,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:25:47,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:25:47,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:25:47,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:25:47,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:25:47,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:25:47,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:25:47,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:25:47,784 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8141a8f6-571e-4fc7-9a7d-6f393c270a6f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 17:25:47,815 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:25:47,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:25:47,816 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:25:47,816 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:25:47,817 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:25:47,817 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:25:47,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:25:47,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:25:47,818 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:25:47,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:25:47,819 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:25:47,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:25:47,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:25:47,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:25:47,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:25:47,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:25:47,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:25:47,824 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:25:47,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:25:47,824 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:25:47,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:25:47,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:25:47,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:25:47,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:25:47,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:25:47,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:25:47,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:25:47,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:25:47,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:25:47,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:25:47,826 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:25:47,827 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:25:47,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:25:47,827 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_8141a8f6-571e-4fc7-9a7d-6f393c270a6f/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8141a8f6-571e-4fc7-9a7d-6f393c270a6f/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16e0086acf2f158eb0b3309fc7ab7b15830d1af8d2ef9923a4f4e2311d9d7a3f [2022-11-21 17:25:48,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:25:48,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:25:48,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:25:48,112 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:25:48,113 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:25:48,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8141a8f6-571e-4fc7-9a7d-6f393c270a6f/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.ufo.UNBOUNDED.pals.c [2022-11-21 17:25:51,272 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:25:51,622 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:25:51,623 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8141a8f6-571e-4fc7-9a7d-6f393c270a6f/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.ufo.UNBOUNDED.pals.c [2022-11-21 17:25:51,655 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8141a8f6-571e-4fc7-9a7d-6f393c270a6f/bin/uautomizer-vX5HgA9Q3a/data/c2d7aad58/bd630c9c95c346e8b292fe769e292579/FLAG44047220a [2022-11-21 17:25:51,669 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8141a8f6-571e-4fc7-9a7d-6f393c270a6f/bin/uautomizer-vX5HgA9Q3a/data/c2d7aad58/bd630c9c95c346e8b292fe769e292579 [2022-11-21 17:25:51,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:25:51,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:25:51,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:25:51,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:25:51,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:25:51,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:25:51" (1/1) ... [2022-11-21 17:25:51,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@153305eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:25:51, skipping insertion in model container [2022-11-21 17:25:51,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:25:51" (1/1) ... [2022-11-21 17:25:51,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:25:51,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:25:52,237 WARN L237 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_8141a8f6-571e-4fc7-9a7d-6f393c270a6f/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.ufo.UNBOUNDED.pals.c[65677,65690] [2022-11-21 17:25:52,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:25:52,279 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:25:52,400 WARN L237 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_8141a8f6-571e-4fc7-9a7d-6f393c270a6f/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.ufo.UNBOUNDED.pals.c[65677,65690] [2022-11-21 17:25:52,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:25:52,422 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:25:52,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:25:52 WrapperNode [2022-11-21 17:25:52,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:25:52,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:25:52,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:25:52,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:25:52,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:25:52" (1/1) ... [2022-11-21 17:25:52,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:25:52" (1/1) ... [2022-11-21 17:25:52,549 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2053 [2022-11-21 17:25:52,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:25:52,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:25:52,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:25:52,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:25:52,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:25:52" (1/1) ... [2022-11-21 17:25:52,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:25:52" (1/1) ... [2022-11-21 17:25:52,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:25:52" (1/1) ... [2022-11-21 17:25:52,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:25:52" (1/1) ... [2022-11-21 17:25:52,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:25:52" (1/1) ... [2022-11-21 17:25:52,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:25:52" (1/1) ... [2022-11-21 17:25:52,628 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:25:52" (1/1) ... [2022-11-21 17:25:52,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:25:52" (1/1) ... [2022-11-21 17:25:52,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:25:52,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:25:52,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:25:52,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:25:52,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:25:52" (1/1) ... [2022-11-21 17:25:52,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:25:52,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8141a8f6-571e-4fc7-9a7d-6f393c270a6f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:25:52,707 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8141a8f6-571e-4fc7-9a7d-6f393c270a6f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:25:52,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8141a8f6-571e-4fc7-9a7d-6f393c270a6f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:25:52,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:25:52,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:25:52,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:25:52,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:25:53,069 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:25:53,071 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:25:54,822 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:25:54,835 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:25:54,836 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 17:25:54,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:25:54 BoogieIcfgContainer [2022-11-21 17:25:54,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:25:54,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:25:54,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:25:54,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:25:54,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:25:51" (1/3) ... [2022-11-21 17:25:54,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7e64f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:25:54, skipping insertion in model container [2022-11-21 17:25:54,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:25:52" (2/3) ... [2022-11-21 17:25:54,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7e64f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:25:54, skipping insertion in model container [2022-11-21 17:25:54,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:25:54" (3/3) ... [2022-11-21 17:25:54,856 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.ufo.UNBOUNDED.pals.c [2022-11-21 17:25:54,876 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:25:54,877 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:25:54,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:25:54,984 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@77c9ba68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:25:54,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:25:54,996 INFO L276 IsEmpty]: Start isEmpty. Operand has 706 states, 704 states have (on average 1.8650568181818181) internal successors, (1313), 705 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:55,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-21 17:25:55,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:55,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:25:55,025 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:25:55,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:55,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2045169392, now seen corresponding path program 1 times [2022-11-21 17:25:55,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:55,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058503217] [2022-11-21 17:25:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:55,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:55,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:25:55,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:25:55,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058503217] [2022-11-21 17:25:55,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058503217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:25:55,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:25:55,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:25:55,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088539335] [2022-11-21 17:25:55,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:25:55,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 17:25:55,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:55,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 17:25:55,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 17:25:55,744 INFO L87 Difference]: Start difference. First operand has 706 states, 704 states have (on average 1.8650568181818181) internal successors, (1313), 705 states have internal predecessors, (1313), 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 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:55,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:55,851 INFO L93 Difference]: Finished difference Result 858 states and 1587 transitions. [2022-11-21 17:25:55,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 17:25:55,863 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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 153 [2022-11-21 17:25:55,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:55,886 INFO L225 Difference]: With dead ends: 858 [2022-11-21 17:25:55,886 INFO L226 Difference]: Without dead ends: 702 [2022-11-21 17:25:55,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 17:25:55,893 INFO L413 NwaCegarLoop]: 1306 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:55,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:25:55,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-11-21 17:25:55,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 702. [2022-11-21 17:25:55,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 1.8630527817403708) internal successors, (1306), 701 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:55,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1306 transitions. [2022-11-21 17:25:55,983 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1306 transitions. Word has length 153 [2022-11-21 17:25:55,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:55,984 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1306 transitions. [2022-11-21 17:25:55,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:55,984 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1306 transitions. [2022-11-21 17:25:55,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-21 17:25:55,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:55,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:25:55,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:25:55,995 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:25:55,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:55,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1535696302, now seen corresponding path program 1 times [2022-11-21 17:25:55,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:55,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186944978] [2022-11-21 17:25:55,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:55,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:56,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:25:56,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:25:56,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186944978] [2022-11-21 17:25:56,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186944978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:25:56,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:25:56,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:25:56,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324439963] [2022-11-21 17:25:56,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:25:56,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:25:56,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:56,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:25:56,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:25:56,515 INFO L87 Difference]: Start difference. First operand 702 states and 1306 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:56,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:56,731 INFO L93 Difference]: Finished difference Result 857 states and 1580 transitions. [2022-11-21 17:25:56,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:25:56,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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 153 [2022-11-21 17:25:56,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:56,750 INFO L225 Difference]: With dead ends: 857 [2022-11-21 17:25:56,750 INFO L226 Difference]: Without dead ends: 702 [2022-11-21 17:25:56,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:25:56,752 INFO L413 NwaCegarLoop]: 1304 mSDtfsCounter, 3 mSDsluCounter, 3844 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5148 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:56,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5148 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:25:56,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-11-21 17:25:56,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 702. [2022-11-21 17:25:56,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 1.7703281027104136) internal successors, (1241), 701 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:56,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1241 transitions. [2022-11-21 17:25:56,783 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1241 transitions. Word has length 153 [2022-11-21 17:25:56,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:56,783 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1241 transitions. [2022-11-21 17:25:56,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:56,784 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1241 transitions. [2022-11-21 17:25:56,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-21 17:25:56,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:56,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:25:56,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:25:56,788 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:25:56,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:56,789 INFO L85 PathProgramCache]: Analyzing trace with hash -263515124, now seen corresponding path program 1 times [2022-11-21 17:25:56,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:56,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827664755] [2022-11-21 17:25:56,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:56,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:57,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:25:57,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:25:57,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827664755] [2022-11-21 17:25:57,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827664755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:25:57,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:25:57,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:25:57,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013106012] [2022-11-21 17:25:57,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:25:57,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:25:57,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:57,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:25:57,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:25:57,096 INFO L87 Difference]: Start difference. First operand 702 states and 1241 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:57,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:57,173 INFO L93 Difference]: Finished difference Result 990 states and 1755 transitions. [2022-11-21 17:25:57,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:25:57,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 217 [2022-11-21 17:25:57,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:57,183 INFO L225 Difference]: With dead ends: 990 [2022-11-21 17:25:57,184 INFO L226 Difference]: Without dead ends: 839 [2022-11-21 17:25:57,187 INFO L412 NwaCegarLoop]: 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 [2022-11-21 17:25:57,192 INFO L413 NwaCegarLoop]: 1234 mSDtfsCounter, 235 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:57,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 2404 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:25:57,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2022-11-21 17:25:57,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 836. [2022-11-21 17:25:57,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 1.768862275449102) internal successors, (1477), 835 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:57,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1477 transitions. [2022-11-21 17:25:57,233 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1477 transitions. Word has length 217 [2022-11-21 17:25:57,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:57,234 INFO L495 AbstractCegarLoop]: Abstraction has 836 states and 1477 transitions. [2022-11-21 17:25:57,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:57,235 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1477 transitions. [2022-11-21 17:25:57,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-21 17:25:57,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:57,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:25:57,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:25:57,241 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:25:57,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:57,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1892143962, now seen corresponding path program 1 times [2022-11-21 17:25:57,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:57,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100242136] [2022-11-21 17:25:57,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:57,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:25:57,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:25:57,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100242136] [2022-11-21 17:25:57,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100242136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:25:57,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:25:57,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:25:57,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649580228] [2022-11-21 17:25:57,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:25:57,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:25:57,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:57,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:25:57,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:25:57,539 INFO L87 Difference]: Start difference. First operand 836 states and 1477 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:57,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:57,610 INFO L93 Difference]: Finished difference Result 1382 states and 2445 transitions. [2022-11-21 17:25:57,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:25:57,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 221 [2022-11-21 17:25:57,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:57,618 INFO L225 Difference]: With dead ends: 1382 [2022-11-21 17:25:57,618 INFO L226 Difference]: Without dead ends: 1097 [2022-11-21 17:25:57,621 INFO L412 NwaCegarLoop]: 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 [2022-11-21 17:25:57,630 INFO L413 NwaCegarLoop]: 1238 mSDtfsCounter, 235 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:57,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 2417 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:25:57,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-11-21 17:25:57,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1093. [2022-11-21 17:25:57,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 1.7692307692307692) internal successors, (1932), 1092 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:57,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1932 transitions. [2022-11-21 17:25:57,680 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1932 transitions. Word has length 221 [2022-11-21 17:25:57,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:57,681 INFO L495 AbstractCegarLoop]: Abstraction has 1093 states and 1932 transitions. [2022-11-21 17:25:57,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:57,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1932 transitions. [2022-11-21 17:25:57,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-21 17:25:57,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:57,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:25:57,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:25:57,709 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:25:57,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:57,711 INFO L85 PathProgramCache]: Analyzing trace with hash 104525888, now seen corresponding path program 1 times [2022-11-21 17:25:57,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:57,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722076763] [2022-11-21 17:25:57,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:57,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:57,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:25:57,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:25:57,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722076763] [2022-11-21 17:25:57,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722076763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:25:57,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:25:57,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:25:57,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449704038] [2022-11-21 17:25:57,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:25:57,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:25:57,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:57,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:25:57,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:25:57,975 INFO L87 Difference]: Start difference. First operand 1093 states and 1932 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:58,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:58,038 INFO L93 Difference]: Finished difference Result 2129 states and 3766 transitions. [2022-11-21 17:25:58,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:25:58,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 225 [2022-11-21 17:25:58,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:58,045 INFO L225 Difference]: With dead ends: 2129 [2022-11-21 17:25:58,045 INFO L226 Difference]: Without dead ends: 1587 [2022-11-21 17:25:58,046 INFO L412 NwaCegarLoop]: 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 [2022-11-21 17:25:58,047 INFO L413 NwaCegarLoop]: 1238 mSDtfsCounter, 227 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:58,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 2418 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:25:58,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2022-11-21 17:25:58,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1581. [2022-11-21 17:25:58,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1580 states have (on average 1.7670886075949368) internal successors, (2792), 1580 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:58,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2792 transitions. [2022-11-21 17:25:58,098 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2792 transitions. Word has length 225 [2022-11-21 17:25:58,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:58,099 INFO L495 AbstractCegarLoop]: Abstraction has 1581 states and 2792 transitions. [2022-11-21 17:25:58,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:58,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2792 transitions. [2022-11-21 17:25:58,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-21 17:25:58,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:58,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:25:58,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:25:58,105 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:25:58,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:58,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1651908902, now seen corresponding path program 1 times [2022-11-21 17:25:58,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:58,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779349525] [2022-11-21 17:25:58,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:58,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:25:58,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:25:58,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779349525] [2022-11-21 17:25:58,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779349525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:25:58,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:25:58,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:25:58,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699790425] [2022-11-21 17:25:58,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:25:58,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:25:58,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:58,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:25:58,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:25:58,428 INFO L87 Difference]: Start difference. First operand 1581 states and 2792 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:58,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:58,534 INFO L93 Difference]: Finished difference Result 3545 states and 6258 transitions. [2022-11-21 17:25:58,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:25:58,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2022-11-21 17:25:58,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:58,545 INFO L225 Difference]: With dead ends: 3545 [2022-11-21 17:25:58,545 INFO L226 Difference]: Without dead ends: 2515 [2022-11-21 17:25:58,547 INFO L412 NwaCegarLoop]: 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 [2022-11-21 17:25:58,549 INFO L413 NwaCegarLoop]: 1238 mSDtfsCounter, 219 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:58,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 2419 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:25:58,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2022-11-21 17:25:58,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2505. [2022-11-21 17:25:58,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2504 states have (on average 1.7619808306709266) internal successors, (4412), 2504 states have internal predecessors, (4412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:58,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4412 transitions. [2022-11-21 17:25:58,669 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4412 transitions. Word has length 229 [2022-11-21 17:25:58,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:58,670 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 4412 transitions. [2022-11-21 17:25:58,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:58,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4412 transitions. [2022-11-21 17:25:58,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-21 17:25:58,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:58,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:25:58,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:25:58,675 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:25:58,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:58,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1071941516, now seen corresponding path program 1 times [2022-11-21 17:25:58,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:58,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921784750] [2022-11-21 17:25:58,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:58,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:58,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:25:58,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:25:58,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921784750] [2022-11-21 17:25:58,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921784750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:25:58,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:25:58,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:25:58,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628763027] [2022-11-21 17:25:58,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:25:58,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:25:58,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:58,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:25:58,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:25:58,933 INFO L87 Difference]: Start difference. First operand 2505 states and 4412 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:59,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:59,123 INFO L93 Difference]: Finished difference Result 6221 states and 10942 transitions. [2022-11-21 17:25:59,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:25:59,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 233 [2022-11-21 17:25:59,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:59,141 INFO L225 Difference]: With dead ends: 6221 [2022-11-21 17:25:59,141 INFO L226 Difference]: Without dead ends: 4267 [2022-11-21 17:25:59,145 INFO L412 NwaCegarLoop]: 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 [2022-11-21 17:25:59,147 INFO L413 NwaCegarLoop]: 1238 mSDtfsCounter, 211 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:59,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 2420 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:25:59,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2022-11-21 17:25:59,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4249. [2022-11-21 17:25:59,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4249 states, 4248 states have (on average 1.7542372881355932) internal successors, (7452), 4248 states have internal predecessors, (7452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4249 states to 4249 states and 7452 transitions. [2022-11-21 17:25:59,321 INFO L78 Accepts]: Start accepts. Automaton has 4249 states and 7452 transitions. Word has length 233 [2022-11-21 17:25:59,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:59,322 INFO L495 AbstractCegarLoop]: Abstraction has 4249 states and 7452 transitions. [2022-11-21 17:25:59,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:59,323 INFO L276 IsEmpty]: Start isEmpty. Operand 4249 states and 7452 transitions. [2022-11-21 17:25:59,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-21 17:25:59,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:59,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:25:59,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:25:59,328 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:25:59,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:59,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1683604210, now seen corresponding path program 1 times [2022-11-21 17:25:59,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:59,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80612795] [2022-11-21 17:25:59,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:59,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:25:59,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:25:59,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80612795] [2022-11-21 17:25:59,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80612795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:25:59,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:25:59,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:25:59,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135802117] [2022-11-21 17:25:59,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:25:59,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:25:59,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:59,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:25:59,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:25:59,742 INFO L87 Difference]: Start difference. First operand 4249 states and 7452 transitions. Second operand has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:00,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:26:00,971 INFO L93 Difference]: Finished difference Result 25437 states and 44870 transitions. [2022-11-21 17:26:00,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:26:00,972 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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 237 [2022-11-21 17:26:00,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:26:01,042 INFO L225 Difference]: With dead ends: 25437 [2022-11-21 17:26:01,042 INFO L226 Difference]: Without dead ends: 21739 [2022-11-21 17:26:01,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:26:01,051 INFO L413 NwaCegarLoop]: 1247 mSDtfsCounter, 3289 mSDsluCounter, 9584 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3289 SdHoareTripleChecker+Valid, 10831 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:26:01,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3289 Valid, 10831 Invalid, 305 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 17:26:01,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21739 states. [2022-11-21 17:26:01,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21739 to 7803. [2022-11-21 17:26:01,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7803 states, 7802 states have (on average 1.7524993591386824) internal successors, (13673), 7802 states have internal predecessors, (13673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:01,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7803 states to 7803 states and 13673 transitions. [2022-11-21 17:26:01,823 INFO L78 Accepts]: Start accepts. Automaton has 7803 states and 13673 transitions. Word has length 237 [2022-11-21 17:26:01,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:26:01,824 INFO L495 AbstractCegarLoop]: Abstraction has 7803 states and 13673 transitions. [2022-11-21 17:26:01,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:01,825 INFO L276 IsEmpty]: Start isEmpty. Operand 7803 states and 13673 transitions. [2022-11-21 17:26:01,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-21 17:26:01,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:26:01,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:26:01,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:26:01,835 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:26:01,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:26:01,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1376464959, now seen corresponding path program 1 times [2022-11-21 17:26:01,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:26:01,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651982197] [2022-11-21 17:26:01,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:26:01,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:26:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:02,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:26:02,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:26:02,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651982197] [2022-11-21 17:26:02,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651982197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:26:02,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:26:02,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:26:02,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266001549] [2022-11-21 17:26:02,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:26:02,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:26:02,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:26:02,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:26:02,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:26:02,098 INFO L87 Difference]: Start difference. First operand 7803 states and 13673 transitions. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:02,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:26:02,840 INFO L93 Difference]: Finished difference Result 22737 states and 39991 transitions. [2022-11-21 17:26:02,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:26:02,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 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 238 [2022-11-21 17:26:02,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:26:02,879 INFO L225 Difference]: With dead ends: 22737 [2022-11-21 17:26:02,880 INFO L226 Difference]: Without dead ends: 15485 [2022-11-21 17:26:02,890 INFO L412 NwaCegarLoop]: 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 [2022-11-21 17:26:02,891 INFO L413 NwaCegarLoop]: 1244 mSDtfsCounter, 779 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 3911 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:26:02,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 3911 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:26:02,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15485 states. [2022-11-21 17:26:03,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15485 to 11611. [2022-11-21 17:26:03,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11611 states, 11610 states have (on average 1.753316106804479) internal successors, (20356), 11610 states have internal predecessors, (20356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:03,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11611 states to 11611 states and 20356 transitions. [2022-11-21 17:26:03,583 INFO L78 Accepts]: Start accepts. Automaton has 11611 states and 20356 transitions. Word has length 238 [2022-11-21 17:26:03,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:26:03,583 INFO L495 AbstractCegarLoop]: Abstraction has 11611 states and 20356 transitions. [2022-11-21 17:26:03,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:03,584 INFO L276 IsEmpty]: Start isEmpty. Operand 11611 states and 20356 transitions. [2022-11-21 17:26:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-21 17:26:03,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:26:03,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:26:03,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:26:03,593 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:26:03,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:26:03,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1918333029, now seen corresponding path program 1 times [2022-11-21 17:26:03,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:26:03,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206119582] [2022-11-21 17:26:03,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:26:03,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:26:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:26:03,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:26:03,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206119582] [2022-11-21 17:26:03,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206119582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:26:03,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:26:03,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:26:03,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252018940] [2022-11-21 17:26:03,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:26:03,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:26:03,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:26:03,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:26:03,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:26:03,921 INFO L87 Difference]: Start difference. First operand 11611 states and 20356 transitions. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:04,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:26:04,931 INFO L93 Difference]: Finished difference Result 34131 states and 59931 transitions. [2022-11-21 17:26:04,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:26:04,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2022-11-21 17:26:04,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:26:04,989 INFO L225 Difference]: With dead ends: 34131 [2022-11-21 17:26:04,989 INFO L226 Difference]: Without dead ends: 23071 [2022-11-21 17:26:05,007 INFO L412 NwaCegarLoop]: 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 [2022-11-21 17:26:05,008 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 779 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:26:05,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 3899 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:26:05,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23071 states. [2022-11-21 17:26:06,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23071 to 17293. [2022-11-21 17:26:06,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17293 states, 17292 states have (on average 1.7502891510525098) internal successors, (30266), 17292 states have internal predecessors, (30266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:06,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17293 states to 17293 states and 30266 transitions. [2022-11-21 17:26:06,071 INFO L78 Accepts]: Start accepts. Automaton has 17293 states and 30266 transitions. Word has length 239 [2022-11-21 17:26:06,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:26:06,072 INFO L495 AbstractCegarLoop]: Abstraction has 17293 states and 30266 transitions. [2022-11-21 17:26:06,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:06,072 INFO L276 IsEmpty]: Start isEmpty. Operand 17293 states and 30266 transitions. [2022-11-21 17:26:06,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-21 17:26:06,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:26:06,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:26:06,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:26:06,082 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:26:06,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:26:06,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1705378358, now seen corresponding path program 1 times [2022-11-21 17:26:06,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:26:06,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148658102] [2022-11-21 17:26:06,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:26:06,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:26:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:06,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:26:06,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:26:06,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148658102] [2022-11-21 17:26:06,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148658102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:26:06,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:26:06,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:26:06,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262581675] [2022-11-21 17:26:06,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:26:06,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:26:06,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:26:06,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:26:06,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:26:06,350 INFO L87 Difference]: Start difference. First operand 17293 states and 30266 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:07,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:26:07,662 INFO L93 Difference]: Finished difference Result 51239 states and 89823 transitions. [2022-11-21 17:26:07,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:26:07,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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 240 [2022-11-21 17:26:07,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:26:07,746 INFO L225 Difference]: With dead ends: 51239 [2022-11-21 17:26:07,746 INFO L226 Difference]: Without dead ends: 34497 [2022-11-21 17:26:07,770 INFO L412 NwaCegarLoop]: 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 [2022-11-21 17:26:07,771 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 777 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 3901 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:26:07,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 3901 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:26:07,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34497 states. [2022-11-21 17:26:09,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34497 to 25825. [2022-11-21 17:26:09,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25825 states, 25824 states have (on average 1.747366790582404) internal successors, (45124), 25824 states have internal predecessors, (45124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:09,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25825 states to 25825 states and 45124 transitions. [2022-11-21 17:26:09,160 INFO L78 Accepts]: Start accepts. Automaton has 25825 states and 45124 transitions. Word has length 240 [2022-11-21 17:26:09,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:26:09,161 INFO L495 AbstractCegarLoop]: Abstraction has 25825 states and 45124 transitions. [2022-11-21 17:26:09,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:09,162 INFO L276 IsEmpty]: Start isEmpty. Operand 25825 states and 45124 transitions. [2022-11-21 17:26:09,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-21 17:26:09,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:26:09,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:26:09,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:26:09,177 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:26:09,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:26:09,178 INFO L85 PathProgramCache]: Analyzing trace with hash -397706897, now seen corresponding path program 1 times [2022-11-21 17:26:09,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:26:09,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663049959] [2022-11-21 17:26:09,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:26:09,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:26:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:09,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:26:09,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:26:09,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663049959] [2022-11-21 17:26:09,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663049959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:26:09,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:26:09,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:26:09,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912634172] [2022-11-21 17:26:09,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:26:09,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:26:09,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:26:09,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:26:09,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:26:09,403 INFO L87 Difference]: Start difference. First operand 25825 states and 45124 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:11,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:26:11,211 INFO L93 Difference]: Finished difference Result 58012 states and 101594 transitions. [2022-11-21 17:26:11,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:26:11,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2022-11-21 17:26:11,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:26:11,304 INFO L225 Difference]: With dead ends: 58012 [2022-11-21 17:26:11,304 INFO L226 Difference]: Without dead ends: 40273 [2022-11-21 17:26:11,324 INFO L412 NwaCegarLoop]: 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 [2022-11-21 17:26:11,325 INFO L413 NwaCegarLoop]: 1454 mSDtfsCounter, 242 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:26:11,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 2657 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:26:11,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40273 states. [2022-11-21 17:26:12,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40273 to 40271. [2022-11-21 17:26:12,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40271 states, 40270 states have (on average 1.7433821703501367) internal successors, (70206), 40270 states have internal predecessors, (70206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:12,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40271 states to 40271 states and 70206 transitions. [2022-11-21 17:26:12,697 INFO L78 Accepts]: Start accepts. Automaton has 40271 states and 70206 transitions. Word has length 241 [2022-11-21 17:26:12,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:26:12,697 INFO L495 AbstractCegarLoop]: Abstraction has 40271 states and 70206 transitions. [2022-11-21 17:26:12,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:12,698 INFO L276 IsEmpty]: Start isEmpty. Operand 40271 states and 70206 transitions. [2022-11-21 17:26:12,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-21 17:26:12,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:26:12,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:26:12,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:26:12,704 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:26:12,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:26:12,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1118226833, now seen corresponding path program 1 times [2022-11-21 17:26:12,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:26:12,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831250227] [2022-11-21 17:26:12,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:26:12,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:26:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:12,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:26:12,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:26:12,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831250227] [2022-11-21 17:26:12,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831250227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:26:12,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:26:12,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:26:12,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546989422] [2022-11-21 17:26:12,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:26:12,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:26:12,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:26:12,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:26:12,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:26:12,857 INFO L87 Difference]: Start difference. First operand 40271 states and 70206 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:14,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:26:14,776 INFO L93 Difference]: Finished difference Result 79333 states and 138255 transitions. [2022-11-21 17:26:14,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:26:14,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2022-11-21 17:26:14,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:26:14,893 INFO L225 Difference]: With dead ends: 79333 [2022-11-21 17:26:14,894 INFO L226 Difference]: Without dead ends: 57723 [2022-11-21 17:26:14,910 INFO L412 NwaCegarLoop]: 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 [2022-11-21 17:26:14,911 INFO L413 NwaCegarLoop]: 1353 mSDtfsCounter, 218 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:26:14,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 2559 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:26:14,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57723 states. [2022-11-21 17:26:16,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57723 to 57721. [2022-11-21 17:26:17,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57721 states, 57720 states have (on average 1.7362266112266111) internal successors, (100215), 57720 states have internal predecessors, (100215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:17,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57721 states to 57721 states and 100215 transitions. [2022-11-21 17:26:17,159 INFO L78 Accepts]: Start accepts. Automaton has 57721 states and 100215 transitions. Word has length 241 [2022-11-21 17:26:17,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:26:17,160 INFO L495 AbstractCegarLoop]: Abstraction has 57721 states and 100215 transitions. [2022-11-21 17:26:17,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:17,160 INFO L276 IsEmpty]: Start isEmpty. Operand 57721 states and 100215 transitions. [2022-11-21 17:26:17,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-21 17:26:17,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:26:17,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:26:17,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 17:26:17,166 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:26:17,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:26:17,167 INFO L85 PathProgramCache]: Analyzing trace with hash -429492881, now seen corresponding path program 1 times [2022-11-21 17:26:17,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:26:17,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354056151] [2022-11-21 17:26:17,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:26:17,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:26:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:17,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:26:17,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:26:17,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354056151] [2022-11-21 17:26:17,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354056151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:26:17,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:26:17,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:26:17,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287564717] [2022-11-21 17:26:17,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:26:17,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:26:17,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:26:17,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:26:17,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:26:17,319 INFO L87 Difference]: Start difference. First operand 57721 states and 100215 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:19,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:26:19,704 INFO L93 Difference]: Finished difference Result 113059 states and 196285 transitions. [2022-11-21 17:26:19,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:26:19,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2022-11-21 17:26:19,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:26:19,847 INFO L225 Difference]: With dead ends: 113059 [2022-11-21 17:26:19,847 INFO L226 Difference]: Without dead ends: 82227 [2022-11-21 17:26:19,885 INFO L412 NwaCegarLoop]: 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 [2022-11-21 17:26:19,886 INFO L413 NwaCegarLoop]: 1333 mSDtfsCounter, 210 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:26:19,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 2540 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:26:20,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82227 states. [2022-11-21 17:26:22,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82227 to 82225. [2022-11-21 17:26:22,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82225 states, 82224 states have (on average 1.7289964000778362) internal successors, (142165), 82224 states have internal predecessors, (142165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:22,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82225 states to 82225 states and 142165 transitions. [2022-11-21 17:26:22,951 INFO L78 Accepts]: Start accepts. Automaton has 82225 states and 142165 transitions. Word has length 241 [2022-11-21 17:26:22,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:26:22,951 INFO L495 AbstractCegarLoop]: Abstraction has 82225 states and 142165 transitions. [2022-11-21 17:26:22,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:22,951 INFO L276 IsEmpty]: Start isEmpty. Operand 82225 states and 142165 transitions. [2022-11-21 17:26:22,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-21 17:26:22,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:26:22,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:26:22,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 17:26:22,956 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:26:22,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:26:22,957 INFO L85 PathProgramCache]: Analyzing trace with hash -432244804, now seen corresponding path program 1 times [2022-11-21 17:26:22,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:26:22,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383229499] [2022-11-21 17:26:22,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:26:22,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:26:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:23,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:26:23,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:26:23,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383229499] [2022-11-21 17:26:23,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383229499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:26:23,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:26:23,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:26:23,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241659359] [2022-11-21 17:26:23,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:26:23,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:26:23,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:26:23,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:26:23,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:26:23,177 INFO L87 Difference]: Start difference. First operand 82225 states and 142165 transitions. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:29,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:26:29,392 INFO L93 Difference]: Finished difference Result 269285 states and 465948 transitions. [2022-11-21 17:26:29,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:26:29,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2022-11-21 17:26:29,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:26:29,736 INFO L225 Difference]: With dead ends: 269285 [2022-11-21 17:26:29,737 INFO L226 Difference]: Without dead ends: 187957 [2022-11-21 17:26:29,787 INFO L412 NwaCegarLoop]: 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 [2022-11-21 17:26:29,788 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 775 mSDsluCounter, 2673 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 3903 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:26:29,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 3903 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:26:29,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187957 states.