./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label59.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label59.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro --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 9689a0609fceafc63efca466da3c77b2a75cad0dc813552287d39be336e7ab21 --- 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-8393723 [2022-11-18 18:30:44,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:30:44,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:30:44,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:30:44,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:30:44,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:30:44,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:30:44,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:30:44,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:30:44,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:30:44,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:30:44,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:30:44,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:30:44,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:30:44,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:30:44,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:30:44,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:30:44,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:30:44,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:30:44,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:30:44,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:30:44,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:30:44,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:30:44,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:30:44,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:30:44,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:30:44,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:30:44,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:30:44,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:30:44,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:30:44,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:30:44,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:30:44,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:30:44,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:30:44,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:30:44,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:30:44,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:30:44,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:30:44,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:30:44,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:30:44,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:30:44,718 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:30:44,757 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:30:44,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:30:44,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:30:44,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:30:44,760 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:30:44,760 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:30:44,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:30:44,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:30:44,761 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:30:44,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:30:44,762 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:30:44,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:30:44,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:30:44,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:30:44,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:30:44,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:30:44,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:30:44,764 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:30:44,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:30:44,764 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:30:44,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:30:44,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:30:44,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:30:44,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:30:44,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:30:44,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:30:44,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:30:44,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:30:44,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:30:44,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:30:44,781 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:30:44,781 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:30:44,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:30:44,782 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_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9689a0609fceafc63efca466da3c77b2a75cad0dc813552287d39be336e7ab21 [2022-11-18 18:30:45,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:30:45,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:30:45,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:30:45,121 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:30:45,122 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:30:45,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/eca-rers2012/Problem17_label59.c [2022-11-18 18:30:45,189 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/data/a142e3a5a/922f8a1812c242c7b11053c108317496/FLAGdfa67c019 [2022-11-18 18:30:45,934 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:30:45,935 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/sv-benchmarks/c/eca-rers2012/Problem17_label59.c [2022-11-18 18:30:45,957 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/data/a142e3a5a/922f8a1812c242c7b11053c108317496/FLAGdfa67c019 [2022-11-18 18:30:46,200 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/data/a142e3a5a/922f8a1812c242c7b11053c108317496 [2022-11-18 18:30:46,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:30:46,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:30:46,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:30:46,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:30:46,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:30:46,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:30:46" (1/1) ... [2022-11-18 18:30:46,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fd46f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:46, skipping insertion in model container [2022-11-18 18:30:46,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:30:46" (1/1) ... [2022-11-18 18:30:46,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:30:46,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:30:46,593 WARN L234 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_50782337-cbe6-4d98-8da6-d6064b82e87d/sv-benchmarks/c/eca-rers2012/Problem17_label59.c[4894,4907] [2022-11-18 18:30:47,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:30:47,434 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:30:47,469 WARN L234 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_50782337-cbe6-4d98-8da6-d6064b82e87d/sv-benchmarks/c/eca-rers2012/Problem17_label59.c[4894,4907] [2022-11-18 18:30:47,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:30:47,855 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:30:47,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:47 WrapperNode [2022-11-18 18:30:47,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:30:47,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:30:47,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:30:47,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:30:47,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:47" (1/1) ... [2022-11-18 18:30:47,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:47" (1/1) ... [2022-11-18 18:30:48,236 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-11-18 18:30:48,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:30:48,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:30:48,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:30:48,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:30:48,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:47" (1/1) ... [2022-11-18 18:30:48,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:47" (1/1) ... [2022-11-18 18:30:48,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:47" (1/1) ... [2022-11-18 18:30:48,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:47" (1/1) ... [2022-11-18 18:30:48,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:47" (1/1) ... [2022-11-18 18:30:48,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:47" (1/1) ... [2022-11-18 18:30:48,620 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:47" (1/1) ... [2022-11-18 18:30:48,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:47" (1/1) ... [2022-11-18 18:30:48,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:30:48,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:30:48,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:30:48,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:30:48,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:47" (1/1) ... [2022-11-18 18:30:48,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:30:48,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:30:48,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:30:48,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:30:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:30:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:30:48,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:30:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:30:48,955 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:30:48,957 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:30:53,263 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:30:53,289 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:30:53,290 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 18:30:53,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:30:53 BoogieIcfgContainer [2022-11-18 18:30:53,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:30:53,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:30:53,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:30:53,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:30:53,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:30:46" (1/3) ... [2022-11-18 18:30:53,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279be367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:30:53, skipping insertion in model container [2022-11-18 18:30:53,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:47" (2/3) ... [2022-11-18 18:30:53,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279be367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:30:53, skipping insertion in model container [2022-11-18 18:30:53,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:30:53" (3/3) ... [2022-11-18 18:30:53,305 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label59.c [2022-11-18 18:30:53,325 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:30:53,326 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:30:53,463 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:30:53,479 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;@57548c45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:30:53,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:30:53,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:53,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 18:30:53,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:30:53,494 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] [2022-11-18 18:30:53,495 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:30:53,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:53,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1317301102, now seen corresponding path program 1 times [2022-11-18 18:30:53,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:53,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474131470] [2022-11-18 18:30:53,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:53,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:53,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:53,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:53,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474131470] [2022-11-18 18:30:53,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474131470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:53,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:53,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:30:53,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081807767] [2022-11-18 18:30:53,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:53,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:30:53,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:53,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:30:53,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:30:53,896 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:58,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:30:58,297 INFO L93 Difference]: Finished difference Result 1680 states and 3074 transitions. [2022-11-18 18:30:58,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:30:58,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-18 18:30:58,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:30:58,321 INFO L225 Difference]: With dead ends: 1680 [2022-11-18 18:30:58,321 INFO L226 Difference]: Without dead ends: 1011 [2022-11-18 18:30:58,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:30:58,331 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 549 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:30:58,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 220 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-18 18:30:58,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2022-11-18 18:30:58,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 996. [2022-11-18 18:30:58,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 1.735678391959799) internal successors, (1727), 995 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:58,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1727 transitions. [2022-11-18 18:30:58,428 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1727 transitions. Word has length 32 [2022-11-18 18:30:58,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:30:58,429 INFO L495 AbstractCegarLoop]: Abstraction has 996 states and 1727 transitions. [2022-11-18 18:30:58,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:58,430 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1727 transitions. [2022-11-18 18:30:58,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-18 18:30:58,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:30:58,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:58,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:30:58,434 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:30:58,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:58,435 INFO L85 PathProgramCache]: Analyzing trace with hash 800824111, now seen corresponding path program 1 times [2022-11-18 18:30:58,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:58,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943472445] [2022-11-18 18:30:58,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:58,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:58,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:58,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943472445] [2022-11-18 18:30:58,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943472445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:58,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:58,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:30:58,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985194330] [2022-11-18 18:30:58,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:58,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:30:58,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:58,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:30:58,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:30:58,703 INFO L87 Difference]: Start difference. First operand 996 states and 1727 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:02,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:02,188 INFO L93 Difference]: Finished difference Result 2873 states and 5026 transitions. [2022-11-18 18:31:02,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:31:02,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-11-18 18:31:02,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:02,200 INFO L225 Difference]: With dead ends: 2873 [2022-11-18 18:31:02,200 INFO L226 Difference]: Without dead ends: 1879 [2022-11-18 18:31:02,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:31:02,203 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 409 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:02,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 521 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-18 18:31:02,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2022-11-18 18:31:02,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1870. [2022-11-18 18:31:02,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 1.4724451578384163) internal successors, (2752), 1869 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:02,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2752 transitions. [2022-11-18 18:31:02,268 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2752 transitions. Word has length 97 [2022-11-18 18:31:02,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:02,269 INFO L495 AbstractCegarLoop]: Abstraction has 1870 states and 2752 transitions. [2022-11-18 18:31:02,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:02,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2752 transitions. [2022-11-18 18:31:02,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-18 18:31:02,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:02,272 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:02,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:31:02,272 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:31:02,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:02,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1125160642, now seen corresponding path program 1 times [2022-11-18 18:31:02,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:02,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8811223] [2022-11-18 18:31:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:02,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:02,493 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:02,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:02,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8811223] [2022-11-18 18:31:02,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8811223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:02,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:02,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:31:02,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721679122] [2022-11-18 18:31:02,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:02,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:31:02,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:02,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:31:02,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:31:02,497 INFO L87 Difference]: Start difference. First operand 1870 states and 2752 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:05,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:05,886 INFO L93 Difference]: Finished difference Result 5454 states and 8042 transitions. [2022-11-18 18:31:05,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:31:05,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-11-18 18:31:05,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:05,900 INFO L225 Difference]: With dead ends: 5454 [2022-11-18 18:31:05,901 INFO L226 Difference]: Without dead ends: 3586 [2022-11-18 18:31:05,903 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 [2022-11-18 18:31:05,904 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 462 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:05,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 914 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-18 18:31:05,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2022-11-18 18:31:05,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 3583. [2022-11-18 18:31:05,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3582 states have (on average 1.3358458961474038) internal successors, (4785), 3582 states have internal predecessors, (4785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:05,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 4785 transitions. [2022-11-18 18:31:05,980 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 4785 transitions. Word has length 102 [2022-11-18 18:31:05,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:05,981 INFO L495 AbstractCegarLoop]: Abstraction has 3583 states and 4785 transitions. [2022-11-18 18:31:05,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:05,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 4785 transitions. [2022-11-18 18:31:05,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-18 18:31:05,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:05,984 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:05,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:31:05,985 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:31:05,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:05,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1099632395, now seen corresponding path program 1 times [2022-11-18 18:31:05,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:05,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11989562] [2022-11-18 18:31:05,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:05,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:06,223 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:06,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:06,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11989562] [2022-11-18 18:31:06,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11989562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:06,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:06,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:31:06,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974395585] [2022-11-18 18:31:06,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:06,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:31:06,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:06,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:31:06,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:31:06,230 INFO L87 Difference]: Start difference. First operand 3583 states and 4785 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:09,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:09,196 INFO L93 Difference]: Finished difference Result 10571 states and 14111 transitions. [2022-11-18 18:31:09,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:31:09,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-11-18 18:31:09,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:09,216 INFO L225 Difference]: With dead ends: 10571 [2022-11-18 18:31:09,216 INFO L226 Difference]: Without dead ends: 5286 [2022-11-18 18:31:09,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:31:09,223 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:09,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-18 18:31:09,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2022-11-18 18:31:09,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 4431. [2022-11-18 18:31:09,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4431 states, 4430 states have (on average 1.209255079006772) internal successors, (5357), 4430 states have internal predecessors, (5357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:09,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4431 states to 4431 states and 5357 transitions. [2022-11-18 18:31:09,321 INFO L78 Accepts]: Start accepts. Automaton has 4431 states and 5357 transitions. Word has length 143 [2022-11-18 18:31:09,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:09,322 INFO L495 AbstractCegarLoop]: Abstraction has 4431 states and 5357 transitions. [2022-11-18 18:31:09,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:09,322 INFO L276 IsEmpty]: Start isEmpty. Operand 4431 states and 5357 transitions. [2022-11-18 18:31:09,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-18 18:31:09,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:09,325 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:09,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:31:09,325 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:31:09,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:09,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1487374155, now seen corresponding path program 1 times [2022-11-18 18:31:09,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:09,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372983612] [2022-11-18 18:31:09,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:09,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:09,588 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:09,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:09,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372983612] [2022-11-18 18:31:09,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372983612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:09,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:09,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:31:09,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636358144] [2022-11-18 18:31:09,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:09,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:31:09,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:09,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:31:09,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:31:09,593 INFO L87 Difference]: Start difference. First operand 4431 states and 5357 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:12,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:12,149 INFO L93 Difference]: Finished difference Result 11410 states and 14012 transitions. [2022-11-18 18:31:12,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:31:12,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2022-11-18 18:31:12,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:12,172 INFO L225 Difference]: With dead ends: 11410 [2022-11-18 18:31:12,173 INFO L226 Difference]: Without dead ends: 6981 [2022-11-18 18:31:12,178 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 [2022-11-18 18:31:12,179 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:12,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 785 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-18 18:31:12,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6981 states. [2022-11-18 18:31:12,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6981 to 6981. [2022-11-18 18:31:12,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6981 states, 6980 states have (on average 1.1835243553008596) internal successors, (8261), 6980 states have internal predecessors, (8261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:12,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6981 states to 6981 states and 8261 transitions. [2022-11-18 18:31:12,323 INFO L78 Accepts]: Start accepts. Automaton has 6981 states and 8261 transitions. Word has length 184 [2022-11-18 18:31:12,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:12,324 INFO L495 AbstractCegarLoop]: Abstraction has 6981 states and 8261 transitions. [2022-11-18 18:31:12,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:12,324 INFO L276 IsEmpty]: Start isEmpty. Operand 6981 states and 8261 transitions. [2022-11-18 18:31:12,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-11-18 18:31:12,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:12,330 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:12,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:31:12,330 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:31:12,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:12,331 INFO L85 PathProgramCache]: Analyzing trace with hash 670247123, now seen corresponding path program 1 times [2022-11-18 18:31:12,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:12,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261021088] [2022-11-18 18:31:12,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:12,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:12,747 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-11-18 18:31:12,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:12,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261021088] [2022-11-18 18:31:12,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261021088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:12,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:12,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:31:12,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355477119] [2022-11-18 18:31:12,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:12,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:31:12,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:12,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:31:12,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:31:12,750 INFO L87 Difference]: Start difference. First operand 6981 states and 8261 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:15,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:15,474 INFO L93 Difference]: Finished difference Result 17786 states and 21271 transitions. [2022-11-18 18:31:15,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:31:15,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 264 [2022-11-18 18:31:15,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:15,500 INFO L225 Difference]: With dead ends: 17786 [2022-11-18 18:31:15,500 INFO L226 Difference]: Without dead ends: 9957 [2022-11-18 18:31:15,507 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 [2022-11-18 18:31:15,508 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 384 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:15,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 858 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-18 18:31:15,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9957 states. [2022-11-18 18:31:15,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9957 to 9957. [2022-11-18 18:31:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9957 states, 9956 states have (on average 1.1449377259943752) internal successors, (11399), 9956 states have internal predecessors, (11399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:15,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9957 states to 9957 states and 11399 transitions. [2022-11-18 18:31:15,672 INFO L78 Accepts]: Start accepts. Automaton has 9957 states and 11399 transitions. Word has length 264 [2022-11-18 18:31:15,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:15,673 INFO L495 AbstractCegarLoop]: Abstraction has 9957 states and 11399 transitions. [2022-11-18 18:31:15,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:15,674 INFO L276 IsEmpty]: Start isEmpty. Operand 9957 states and 11399 transitions. [2022-11-18 18:31:15,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-11-18 18:31:15,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:15,681 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:15,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:31:15,681 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:31:15,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:15,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1739275210, now seen corresponding path program 1 times [2022-11-18 18:31:15,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:15,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117690470] [2022-11-18 18:31:15,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:15,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-11-18 18:31:16,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:16,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117690470] [2022-11-18 18:31:16,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117690470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:16,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:16,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:31:16,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848968475] [2022-11-18 18:31:16,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:16,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:31:16,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:16,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:31:16,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:31:16,088 INFO L87 Difference]: Start difference. First operand 9957 states and 11399 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:18,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:18,924 INFO L93 Difference]: Finished difference Result 25022 states and 28865 transitions. [2022-11-18 18:31:18,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:31:18,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 304 [2022-11-18 18:31:18,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:18,955 INFO L225 Difference]: With dead ends: 25022 [2022-11-18 18:31:18,955 INFO L226 Difference]: Without dead ends: 14184 [2022-11-18 18:31:18,964 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 [2022-11-18 18:31:18,965 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 518 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:18,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 644 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-18 18:31:18,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14184 states. [2022-11-18 18:31:19,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14184 to 13326. [2022-11-18 18:31:19,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13326 states, 13325 states have (on average 1.1366604127579738) internal successors, (15146), 13325 states have internal predecessors, (15146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:19,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13326 states to 13326 states and 15146 transitions. [2022-11-18 18:31:19,267 INFO L78 Accepts]: Start accepts. Automaton has 13326 states and 15146 transitions. Word has length 304 [2022-11-18 18:31:19,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:19,267 INFO L495 AbstractCegarLoop]: Abstraction has 13326 states and 15146 transitions. [2022-11-18 18:31:19,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:19,268 INFO L276 IsEmpty]: Start isEmpty. Operand 13326 states and 15146 transitions. [2022-11-18 18:31:19,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-18 18:31:19,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:19,279 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:19,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:31:19,279 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:31:19,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:19,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1781923912, now seen corresponding path program 1 times [2022-11-18 18:31:19,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:19,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519271420] [2022-11-18 18:31:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:19,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:19,812 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:19,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:19,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519271420] [2022-11-18 18:31:19,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519271420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:19,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:19,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:31:19,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384722748] [2022-11-18 18:31:19,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:19,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:31:19,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:19,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:31:19,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:31:19,815 INFO L87 Difference]: Start difference. First operand 13326 states and 15146 transitions. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:23,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:23,272 INFO L93 Difference]: Finished difference Result 31364 states and 35699 transitions. [2022-11-18 18:31:23,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:31:23,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 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 371 [2022-11-18 18:31:23,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:23,310 INFO L225 Difference]: With dead ends: 31364 [2022-11-18 18:31:23,310 INFO L226 Difference]: Without dead ends: 17615 [2022-11-18 18:31:23,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:31:23,321 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 623 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2315 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 2581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 2315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:23,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 180 Invalid, 2581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 2315 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-18 18:31:23,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17615 states. [2022-11-18 18:31:23,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17615 to 17608. [2022-11-18 18:31:23,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17608 states, 17607 states have (on average 1.1423865508036577) internal successors, (20114), 17607 states have internal predecessors, (20114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:23,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17608 states to 17608 states and 20114 transitions. [2022-11-18 18:31:23,560 INFO L78 Accepts]: Start accepts. Automaton has 17608 states and 20114 transitions. Word has length 371 [2022-11-18 18:31:23,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:23,561 INFO L495 AbstractCegarLoop]: Abstraction has 17608 states and 20114 transitions. [2022-11-18 18:31:23,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:23,562 INFO L276 IsEmpty]: Start isEmpty. Operand 17608 states and 20114 transitions. [2022-11-18 18:31:23,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2022-11-18 18:31:23,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:23,583 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:23,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:31:23,588 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:31:23,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:23,589 INFO L85 PathProgramCache]: Analyzing trace with hash -362739949, now seen corresponding path program 1 times [2022-11-18 18:31:23,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:23,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970264614] [2022-11-18 18:31:23,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:23,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:24,130 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-18 18:31:24,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:24,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970264614] [2022-11-18 18:31:24,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970264614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:24,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:24,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:31:24,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336679270] [2022-11-18 18:31:24,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:24,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:31:24,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:24,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:31:24,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:31:24,135 INFO L87 Difference]: Start difference. First operand 17608 states and 20114 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:26,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:26,585 INFO L93 Difference]: Finished difference Result 45440 states and 52036 transitions. [2022-11-18 18:31:26,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:31:26,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 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 474 [2022-11-18 18:31:26,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:26,636 INFO L225 Difference]: With dead ends: 45440 [2022-11-18 18:31:26,637 INFO L226 Difference]: Without dead ends: 27834 [2022-11-18 18:31:26,651 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 [2022-11-18 18:31:26,652 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 490 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:26,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 248 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 18:31:26,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27834 states. [2022-11-18 18:31:27,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27834 to 27817. [2022-11-18 18:31:27,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27817 states, 27816 states have (on average 1.1339157319528328) internal successors, (31541), 27816 states have internal predecessors, (31541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:27,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27817 states to 27817 states and 31541 transitions. [2022-11-18 18:31:27,134 INFO L78 Accepts]: Start accepts. Automaton has 27817 states and 31541 transitions. Word has length 474 [2022-11-18 18:31:27,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:27,135 INFO L495 AbstractCegarLoop]: Abstraction has 27817 states and 31541 transitions. [2022-11-18 18:31:27,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:27,135 INFO L276 IsEmpty]: Start isEmpty. Operand 27817 states and 31541 transitions. [2022-11-18 18:31:27,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2022-11-18 18:31:27,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:27,152 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:27,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:31:27,153 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:31:27,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:27,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1828877455, now seen corresponding path program 1 times [2022-11-18 18:31:27,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:27,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985416181] [2022-11-18 18:31:27,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:27,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-11-18 18:31:27,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:27,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985416181] [2022-11-18 18:31:27,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985416181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:27,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:27,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:31:27,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641004114] [2022-11-18 18:31:27,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:27,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:31:27,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:27,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:31:27,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:31:27,542 INFO L87 Difference]: Start difference. First operand 27817 states and 31541 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:30,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:30,069 INFO L93 Difference]: Finished difference Result 61163 states and 69621 transitions. [2022-11-18 18:31:30,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:31:30,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 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 528 [2022-11-18 18:31:30,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:30,110 INFO L225 Difference]: With dead ends: 61163 [2022-11-18 18:31:30,110 INFO L226 Difference]: Without dead ends: 33773 [2022-11-18 18:31:30,128 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 [2022-11-18 18:31:30,129 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 486 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:30,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 696 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 18:31:30,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33773 states. [2022-11-18 18:31:30,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33773 to 33769. [2022-11-18 18:31:30,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33769 states, 33768 states have (on average 1.1284352049277422) internal successors, (38105), 33768 states have internal predecessors, (38105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:30,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33769 states to 33769 states and 38105 transitions. [2022-11-18 18:31:30,687 INFO L78 Accepts]: Start accepts. Automaton has 33769 states and 38105 transitions. Word has length 528 [2022-11-18 18:31:30,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:30,688 INFO L495 AbstractCegarLoop]: Abstraction has 33769 states and 38105 transitions. [2022-11-18 18:31:30,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:30,688 INFO L276 IsEmpty]: Start isEmpty. Operand 33769 states and 38105 transitions. [2022-11-18 18:31:30,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2022-11-18 18:31:30,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:30,716 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:30,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:31:30,717 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:31:30,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:30,717 INFO L85 PathProgramCache]: Analyzing trace with hash 279608461, now seen corresponding path program 1 times [2022-11-18 18:31:30,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:30,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413959126] [2022-11-18 18:31:30,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:30,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:31,867 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 538 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-18 18:31:31,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:31,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413959126] [2022-11-18 18:31:31,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413959126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:31,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:31,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:31:31,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345663766] [2022-11-18 18:31:31,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:31,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:31:31,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:31,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:31:31,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:31:31,871 INFO L87 Difference]: Start difference. First operand 33769 states and 38105 transitions. Second operand has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:34,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:34,288 INFO L93 Difference]: Finished difference Result 75205 states and 85124 transitions. [2022-11-18 18:31:34,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:31:34,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 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 617 [2022-11-18 18:31:34,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:34,339 INFO L225 Difference]: With dead ends: 75205 [2022-11-18 18:31:34,340 INFO L226 Difference]: Without dead ends: 40581 [2022-11-18 18:31:34,360 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 [2022-11-18 18:31:34,361 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 214 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:34,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 627 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 18:31:34,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40581 states. [2022-11-18 18:31:34,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40581 to 40575. [2022-11-18 18:31:34,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40575 states, 40574 states have (on average 1.122344358456154) internal successors, (45538), 40574 states have internal predecessors, (45538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:35,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40575 states to 40575 states and 45538 transitions. [2022-11-18 18:31:35,127 INFO L78 Accepts]: Start accepts. Automaton has 40575 states and 45538 transitions. Word has length 617 [2022-11-18 18:31:35,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:35,128 INFO L495 AbstractCegarLoop]: Abstraction has 40575 states and 45538 transitions. [2022-11-18 18:31:35,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:35,130 INFO L276 IsEmpty]: Start isEmpty. Operand 40575 states and 45538 transitions. [2022-11-18 18:31:35,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2022-11-18 18:31:35,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:35,202 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:35,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:31:35,203 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:31:35,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:35,210 INFO L85 PathProgramCache]: Analyzing trace with hash -47795900, now seen corresponding path program 1 times [2022-11-18 18:31:35,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:35,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065440203] [2022-11-18 18:31:35,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:35,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 369 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-18 18:31:36,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:36,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065440203] [2022-11-18 18:31:36,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065440203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:31:36,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:31:36,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:31:36,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685028951] [2022-11-18 18:31:36,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:36,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:31:36,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:36,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:31:36,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:31:36,468 INFO L87 Difference]: Start difference. First operand 40575 states and 45538 transitions. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:39,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:39,446 INFO L93 Difference]: Finished difference Result 91811 states and 103035 transitions. [2022-11-18 18:31:39,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:31:39,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 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 629 [2022-11-18 18:31:39,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:39,519 INFO L225 Difference]: With dead ends: 91811 [2022-11-18 18:31:39,519 INFO L226 Difference]: Without dead ends: 51663 [2022-11-18 18:31:39,550 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 [2022-11-18 18:31:39,551 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 263 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:39,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 755 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-18 18:31:39,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51663 states. [2022-11-18 18:31:40,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51663 to 50791. [2022-11-18 18:31:40,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50791 states, 50790 states have (on average 1.1181531797597952) internal successors, (56791), 50790 states have internal predecessors, (56791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:40,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50791 states to 50791 states and 56791 transitions. [2022-11-18 18:31:40,380 INFO L78 Accepts]: Start accepts. Automaton has 50791 states and 56791 transitions. Word has length 629 [2022-11-18 18:31:40,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:40,381 INFO L495 AbstractCegarLoop]: Abstraction has 50791 states and 56791 transitions. [2022-11-18 18:31:40,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:40,381 INFO L276 IsEmpty]: Start isEmpty. Operand 50791 states and 56791 transitions. [2022-11-18 18:31:40,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2022-11-18 18:31:40,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:40,413 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:40,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:31:40,413 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:31:40,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:40,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1485908391, now seen corresponding path program 1 times [2022-11-18 18:31:40,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:40,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808952228] [2022-11-18 18:31:40,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:40,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:41,977 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 472 proven. 82 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-18 18:31:41,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:41,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808952228] [2022-11-18 18:31:41,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808952228] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:31:41,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534259291] [2022-11-18 18:31:41,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:41,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:31:41,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:31:41,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:31:42,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:31:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:42,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:31:42,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:43,263 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 472 proven. 82 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-18 18:31:43,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:31:43,760 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 554 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-18 18:31:43,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534259291] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 18:31:43,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:31:43,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-11-18 18:31:43,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644617109] [2022-11-18 18:31:43,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:43,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:31:43,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:43,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:31:43,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:31:43,764 INFO L87 Difference]: Start difference. First operand 50791 states and 56791 transitions. Second operand has 4 states, 4 states have (on average 138.75) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:49,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:49,283 INFO L93 Difference]: Finished difference Result 123319 states and 138161 transitions. [2022-11-18 18:31:49,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:31:49,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 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 673 [2022-11-18 18:31:49,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:49,354 INFO L225 Difference]: With dead ends: 123319 [2022-11-18 18:31:49,354 INFO L226 Difference]: Without dead ends: 72955 [2022-11-18 18:31:49,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1347 GetRequests, 1341 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:31:49,375 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 751 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 605 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 605 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:49,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 120 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [605 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-18 18:31:49,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72955 states. [2022-11-18 18:31:50,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72955 to 67804. [2022-11-18 18:31:50,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67804 states, 67803 states have (on average 1.1196554724717196) internal successors, (75916), 67803 states have internal predecessors, (75916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:50,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67804 states to 67804 states and 75916 transitions. [2022-11-18 18:31:50,485 INFO L78 Accepts]: Start accepts. Automaton has 67804 states and 75916 transitions. Word has length 673 [2022-11-18 18:31:50,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:50,486 INFO L495 AbstractCegarLoop]: Abstraction has 67804 states and 75916 transitions. [2022-11-18 18:31:50,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:50,486 INFO L276 IsEmpty]: Start isEmpty. Operand 67804 states and 75916 transitions. [2022-11-18 18:31:50,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2022-11-18 18:31:50,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:50,537 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:50,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 18:31:50,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:31:50,743 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:31:50,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:50,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1922776364, now seen corresponding path program 1 times [2022-11-18 18:31:50,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:50,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777453753] [2022-11-18 18:31:50,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:50,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 499 proven. 82 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-18 18:31:52,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:52,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777453753] [2022-11-18 18:31:52,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777453753] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:31:52,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272283357] [2022-11-18 18:31:52,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:52,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:31:52,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:31:52,152 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:31:52,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:31:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:52,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 18:31:52,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:53,816 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 485 proven. 246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:53,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:31:55,058 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 731 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:55,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272283357] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 18:31:55,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:31:55,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 5] total 9 [2022-11-18 18:31:55,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464058861] [2022-11-18 18:31:55,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:31:55,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:31:55,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:55,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:31:55,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:31:55,062 INFO L87 Difference]: Start difference. First operand 67804 states and 75916 transitions. Second operand has 6 states, 6 states have (on average 116.33333333333333) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:59,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:59,424 INFO L93 Difference]: Finished difference Result 144104 states and 161247 transitions. [2022-11-18 18:31:59,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:31:59,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 116.33333333333333) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 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 698 [2022-11-18 18:31:59,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:59,638 INFO L225 Difference]: With dead ends: 144104 [2022-11-18 18:31:59,638 INFO L226 Difference]: Without dead ends: 74177 [2022-11-18 18:31:59,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1397 GetRequests, 1387 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:31:59,659 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 1166 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 3422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:59,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 157 Invalid, 3422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 2507 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-18 18:31:59,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74177 states. [2022-11-18 18:32:00,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74177 to 60980. [2022-11-18 18:32:00,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60980 states, 60979 states have (on average 1.1128913232424278) internal successors, (67863), 60979 states have internal predecessors, (67863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:00,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60980 states to 60980 states and 67863 transitions. [2022-11-18 18:32:00,819 INFO L78 Accepts]: Start accepts. Automaton has 60980 states and 67863 transitions. Word has length 698 [2022-11-18 18:32:00,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:00,820 INFO L495 AbstractCegarLoop]: Abstraction has 60980 states and 67863 transitions. [2022-11-18 18:32:00,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.33333333333333) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:00,821 INFO L276 IsEmpty]: Start isEmpty. Operand 60980 states and 67863 transitions. [2022-11-18 18:32:00,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2022-11-18 18:32:00,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:00,855 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:00,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 18:32:01,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50782337-cbe6-4d98-8da6-d6064b82e87d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 18:32:01,062 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:32:01,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:01,063 INFO L85 PathProgramCache]: Analyzing trace with hash 866795984, now seen corresponding path program 1 times [2022-11-18 18:32:01,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:01,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117785601] [2022-11-18 18:32:01,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:01,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 925 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-18 18:32:02,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:02,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117785601] [2022-11-18 18:32:02,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117785601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:02,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:02,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:32:02,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130624839] [2022-11-18 18:32:02,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:02,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:32:02,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:02,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:32:02,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:32:02,308 INFO L87 Difference]: Start difference. First operand 60980 states and 67863 transitions. Second operand has 4 states, 4 states have (on average 154.75) internal successors, (619), 4 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:06,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:06,390 INFO L93 Difference]: Finished difference Result 145404 states and 161549 transitions. [2022-11-18 18:32:06,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:32:06,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 154.75) internal successors, (619), 4 states have internal predecessors, (619), 0 states have call successors, (0), 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 737 [2022-11-18 18:32:06,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:06,470 INFO L225 Difference]: With dead ends: 145404 [2022-11-18 18:32:06,470 INFO L226 Difference]: Without dead ends: 84426 [2022-11-18 18:32:06,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:32:06,493 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 771 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 2657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:06,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 162 Invalid, 2657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-18 18:32:06,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84426 states. [2022-11-18 18:32:07,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84426 to 83569. [2022-11-18 18:32:07,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83569 states, 83568 states have (on average 1.1041547003637755) internal successors, (92272), 83568 states have internal predecessors, (92272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:07,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83569 states to 83569 states and 92272 transitions. [2022-11-18 18:32:07,811 INFO L78 Accepts]: Start accepts. Automaton has 83569 states and 92272 transitions. Word has length 737 [2022-11-18 18:32:07,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:07,811 INFO L495 AbstractCegarLoop]: Abstraction has 83569 states and 92272 transitions. [2022-11-18 18:32:07,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.75) internal successors, (619), 4 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:07,811 INFO L276 IsEmpty]: Start isEmpty. Operand 83569 states and 92272 transitions. [2022-11-18 18:32:07,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2022-11-18 18:32:07,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:07,876 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:07,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 18:32:07,876 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:32:07,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:07,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1693827810, now seen corresponding path program 1 times [2022-11-18 18:32:07,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:07,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46520442] [2022-11-18 18:32:07,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:07,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1159 backedges. 847 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-11-18 18:32:09,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:09,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46520442] [2022-11-18 18:32:09,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46520442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:09,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:09,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:32:09,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142446368] [2022-11-18 18:32:09,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:09,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:32:09,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:09,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:32:09,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:32:09,751 INFO L87 Difference]: Start difference. First operand 83569 states and 92272 transitions. Second operand has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:14,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:14,373 INFO L93 Difference]: Finished difference Result 195635 states and 215813 transitions. [2022-11-18 18:32:14,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:32:14,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 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 808 [2022-11-18 18:32:14,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:14,492 INFO L225 Difference]: With dead ends: 195635 [2022-11-18 18:32:14,493 INFO L226 Difference]: Without dead ends: 112068 [2022-11-18 18:32:14,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:32:14,513 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 627 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 3140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:14,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 366 Invalid, 3140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-18 18:32:14,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112068 states. [2022-11-18 18:32:16,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112068 to 103982. [2022-11-18 18:32:16,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103982 states, 103981 states have (on average 1.0863811657899038) internal successors, (112963), 103981 states have internal predecessors, (112963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:16,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103982 states to 103982 states and 112963 transitions. [2022-11-18 18:32:16,370 INFO L78 Accepts]: Start accepts. Automaton has 103982 states and 112963 transitions. Word has length 808 [2022-11-18 18:32:16,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:16,370 INFO L495 AbstractCegarLoop]: Abstraction has 103982 states and 112963 transitions. [2022-11-18 18:32:16,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:16,371 INFO L276 IsEmpty]: Start isEmpty. Operand 103982 states and 112963 transitions. [2022-11-18 18:32:16,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2022-11-18 18:32:16,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:16,409 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:16,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 18:32:16,410 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:32:16,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:16,411 INFO L85 PathProgramCache]: Analyzing trace with hash 860618353, now seen corresponding path program 1 times [2022-11-18 18:32:16,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:16,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311869742] [2022-11-18 18:32:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:16,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:17,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 618 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2022-11-18 18:32:17,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:17,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311869742] [2022-11-18 18:32:17,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311869742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:17,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:17,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:32:17,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653222912] [2022-11-18 18:32:17,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:17,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:32:17,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:17,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:32:17,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:32:17,595 INFO L87 Difference]: Start difference. First operand 103982 states and 112963 transitions. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:20,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:20,678 INFO L93 Difference]: Finished difference Result 219899 states and 239175 transitions. [2022-11-18 18:32:20,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:32:20,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 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 818 [2022-11-18 18:32:20,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:20,821 INFO L225 Difference]: With dead ends: 219899 [2022-11-18 18:32:20,821 INFO L226 Difference]: Without dead ends: 115919 [2022-11-18 18:32:21,100 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 [2022-11-18 18:32:21,100 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 285 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:21,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 699 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-18 18:32:21,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115919 states. [2022-11-18 18:32:22,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115919 to 100148. [2022-11-18 18:32:22,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100148 states, 100147 states have (on average 1.0862032811766702) internal successors, (108780), 100147 states have internal predecessors, (108780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:22,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100148 states to 100148 states and 108780 transitions. [2022-11-18 18:32:22,713 INFO L78 Accepts]: Start accepts. Automaton has 100148 states and 108780 transitions. Word has length 818 [2022-11-18 18:32:22,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:22,713 INFO L495 AbstractCegarLoop]: Abstraction has 100148 states and 108780 transitions. [2022-11-18 18:32:22,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:22,714 INFO L276 IsEmpty]: Start isEmpty. Operand 100148 states and 108780 transitions. [2022-11-18 18:32:22,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 843 [2022-11-18 18:32:22,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:22,750 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:22,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 18:32:22,751 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:32:22,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:22,752 INFO L85 PathProgramCache]: Analyzing trace with hash -369535205, now seen corresponding path program 1 times [2022-11-18 18:32:22,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:22,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019267038] [2022-11-18 18:32:22,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:22,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:23,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1526 backedges. 900 proven. 0 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2022-11-18 18:32:23,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:23,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019267038] [2022-11-18 18:32:23,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019267038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:23,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:23,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:32:23,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814353787] [2022-11-18 18:32:23,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:23,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:32:23,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:23,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:32:23,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:32:23,636 INFO L87 Difference]: Start difference. First operand 100148 states and 108780 transitions. Second operand has 3 states, 3 states have (on average 148.0) internal successors, (444), 2 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:25,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:25,429 INFO L93 Difference]: Finished difference Result 176835 states and 191364 transitions. [2022-11-18 18:32:25,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:32:25,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 2 states have internal predecessors, (444), 0 states have call successors, (0), 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 842 [2022-11-18 18:32:25,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:25,512 INFO L225 Difference]: With dead ends: 176835 [2022-11-18 18:32:25,512 INFO L226 Difference]: Without dead ends: 76688 [2022-11-18 18:32:25,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:32:25,546 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 563 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:25,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 77 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 18:32:25,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76688 states. [2022-11-18 18:32:26,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76688 to 76678. [2022-11-18 18:32:26,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76678 states, 76677 states have (on average 1.0766331494450747) internal successors, (82553), 76677 states have internal predecessors, (82553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:26,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76678 states to 76678 states and 82553 transitions. [2022-11-18 18:32:26,778 INFO L78 Accepts]: Start accepts. Automaton has 76678 states and 82553 transitions. Word has length 842 [2022-11-18 18:32:26,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:26,779 INFO L495 AbstractCegarLoop]: Abstraction has 76678 states and 82553 transitions. [2022-11-18 18:32:26,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 2 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:26,779 INFO L276 IsEmpty]: Start isEmpty. Operand 76678 states and 82553 transitions. [2022-11-18 18:32:26,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2022-11-18 18:32:26,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:26,855 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:26,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 18:32:26,855 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:32:26,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:26,856 INFO L85 PathProgramCache]: Analyzing trace with hash -147954531, now seen corresponding path program 1 times [2022-11-18 18:32:26,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:26,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287139595] [2022-11-18 18:32:26,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:26,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 576 proven. 0 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2022-11-18 18:32:28,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:28,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287139595] [2022-11-18 18:32:28,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287139595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:28,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:28,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:32:28,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169742337] [2022-11-18 18:32:28,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:28,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:32:28,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:28,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:32:28,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:32:28,195 INFO L87 Difference]: Start difference. First operand 76678 states and 82553 transitions. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:30,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:30,762 INFO L93 Difference]: Finished difference Result 153343 states and 164868 transitions. [2022-11-18 18:32:30,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:32:30,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 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 999 [2022-11-18 18:32:30,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:30,763 INFO L225 Difference]: With dead ends: 153343 [2022-11-18 18:32:30,763 INFO L226 Difference]: Without dead ends: 0 [2022-11-18 18:32:30,800 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 [2022-11-18 18:32:30,803 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 276 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:30,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 651 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 18:32:30,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-18 18:32:30,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-18 18:32:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:30,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-18 18:32:30,805 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 999 [2022-11-18 18:32:30,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:30,805 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 18:32:30,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:30,805 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-18 18:32:30,806 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-18 18:32:30,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 18:32:30,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 18:32:30,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.