./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa --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 2c3b1a53bc376cbb6283db57f6430d0a17b3acc99aa70ab198c7c36e6e59ecc9 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:49:23,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:49:23,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:49:23,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:49:23,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:49:23,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:49:23,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:49:23,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:49:23,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:49:23,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:49:23,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:49:23,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:49:23,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:49:23,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:49:23,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:49:23,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:49:23,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:49:23,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:49:23,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:49:23,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:49:23,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:49:23,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:49:23,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:49:23,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:49:23,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:49:23,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:49:23,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:49:23,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:49:23,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:49:23,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:49:23,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:49:23,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:49:23,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:49:23,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:49:23,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:49:23,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:49:23,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:49:23,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:49:23,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:49:23,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:49:23,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:49:23,863 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:49:23,886 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:49:23,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:49:23,886 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:49:23,886 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:49:23,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:49:23,887 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:49:23,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:49:23,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:49:23,888 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:49:23,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:49:23,889 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:49:23,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:49:23,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:49:23,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:49:23,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:49:23,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:49:23,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:49:23,890 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:49:23,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:49:23,890 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:49:23,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:49:23,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:49:23,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:49:23,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:49:23,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:49:23,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:49:23,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:49:23,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:49:23,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:49:23,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:49:23,892 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:49:23,893 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:49:23,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:49:23,893 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:49:23,893 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_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c3b1a53bc376cbb6283db57f6430d0a17b3acc99aa70ab198c7c36e6e59ecc9 [2021-12-06 17:49:24,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:49:24,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:49:24,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:49:24,112 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:49:24,113 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:49:24,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c [2021-12-06 17:49:24,168 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/data/ec62ad0b2/be1f63bb45464a84a23a4048a577e03e/FLAGc78ab55fb [2021-12-06 17:49:24,558 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:49:24,558 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c [2021-12-06 17:49:24,565 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/data/ec62ad0b2/be1f63bb45464a84a23a4048a577e03e/FLAGc78ab55fb [2021-12-06 17:49:24,575 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/data/ec62ad0b2/be1f63bb45464a84a23a4048a577e03e [2021-12-06 17:49:24,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:49:24,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:49:24,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:49:24,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:49:24,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:49:24,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:49:24" (1/1) ... [2021-12-06 17:49:24,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f4ea356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:24, skipping insertion in model container [2021-12-06 17:49:24,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:49:24" (1/1) ... [2021-12-06 17:49:24,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:49:24,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:49:24,769 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c[11270,11283] [2021-12-06 17:49:24,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:49:24,778 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:49:24,812 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c[11270,11283] [2021-12-06 17:49:24,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:49:24,824 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:49:24,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:24 WrapperNode [2021-12-06 17:49:24,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:49:24,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:49:24,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:49:24,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:49:24,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:24" (1/1) ... [2021-12-06 17:49:24,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:24" (1/1) ... [2021-12-06 17:49:24,862 INFO L137 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 334 [2021-12-06 17:49:24,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:49:24,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:49:24,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:49:24,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:49:24,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:24" (1/1) ... [2021-12-06 17:49:24,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:24" (1/1) ... [2021-12-06 17:49:24,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:24" (1/1) ... [2021-12-06 17:49:24,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:24" (1/1) ... [2021-12-06 17:49:24,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:24" (1/1) ... [2021-12-06 17:49:24,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:24" (1/1) ... [2021-12-06 17:49:24,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:24" (1/1) ... [2021-12-06 17:49:24,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:49:24,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:49:24,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:49:24,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:49:24,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:24" (1/1) ... [2021-12-06 17:49:24,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:49:24,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:49:24,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:49:24,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:49:24,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:49:24,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:49:24,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:49:24,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:49:25,030 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:49:25,031 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:49:25,318 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:49:25,325 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:49:25,325 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 17:49:25,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:49:25 BoogieIcfgContainer [2021-12-06 17:49:25,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:49:25,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:49:25,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:49:25,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:49:25,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:49:24" (1/3) ... [2021-12-06 17:49:25,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2285ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:49:25, skipping insertion in model container [2021-12-06 17:49:25,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:49:24" (2/3) ... [2021-12-06 17:49:25,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2285ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:49:25, skipping insertion in model container [2021-12-06 17:49:25,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:49:25" (3/3) ... [2021-12-06 17:49:25,335 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c [2021-12-06 17:49:25,340 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:49:25,341 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:49:25,381 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:49:25,387 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:49:25,387 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:49:25,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 91 states have (on average 1.7252747252747254) internal successors, (157), 92 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:25,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 17:49:25,408 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:25,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:49:25,408 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:25,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:25,412 INFO L85 PathProgramCache]: Analyzing trace with hash 8392247, now seen corresponding path program 1 times [2021-12-06 17:49:25,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:25,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148461106] [2021-12-06 17:49:25,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:25,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:25,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:49:25,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:25,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148461106] [2021-12-06 17:49:25,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148461106] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:25,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:49:25,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:49:25,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926591391] [2021-12-06 17:49:25,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:25,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 17:49:25,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:25,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 17:49:25,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:49:25,595 INFO L87 Difference]: Start difference. First operand has 93 states, 91 states have (on average 1.7252747252747254) internal successors, (157), 92 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:25,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:25,618 INFO L93 Difference]: Finished difference Result 150 states and 246 transitions. [2021-12-06 17:49:25,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 17:49:25,620 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-12-06 17:49:25,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:25,627 INFO L225 Difference]: With dead ends: 150 [2021-12-06 17:49:25,627 INFO L226 Difference]: Without dead ends: 89 [2021-12-06 17:49:25,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:49:25,633 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:25,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:49:25,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-06 17:49:25,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-12-06 17:49:25,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.7045454545454546) internal successors, (150), 88 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:25,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 150 transitions. [2021-12-06 17:49:25,666 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 150 transitions. Word has length 33 [2021-12-06 17:49:25,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:25,666 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 150 transitions. [2021-12-06 17:49:25,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:25,667 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 150 transitions. [2021-12-06 17:49:25,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 17:49:25,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:25,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:49:25,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:49:25,669 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:25,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:25,670 INFO L85 PathProgramCache]: Analyzing trace with hash -501080843, now seen corresponding path program 1 times [2021-12-06 17:49:25,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:25,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969891837] [2021-12-06 17:49:25,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:25,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:25,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:49:25,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:25,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969891837] [2021-12-06 17:49:25,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969891837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:25,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:49:25,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:49:25,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142383816] [2021-12-06 17:49:25,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:25,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:49:25,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:25,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:49:25,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:49:25,763 INFO L87 Difference]: Start difference. First operand 89 states and 150 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:25,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:25,821 INFO L93 Difference]: Finished difference Result 145 states and 236 transitions. [2021-12-06 17:49:25,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:49:25,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-12-06 17:49:25,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:25,822 INFO L225 Difference]: With dead ends: 145 [2021-12-06 17:49:25,822 INFO L226 Difference]: Without dead ends: 89 [2021-12-06 17:49:25,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:49:25,824 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 3 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:25,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 558 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:49:25,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-06 17:49:25,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-12-06 17:49:25,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.3522727272727273) internal successors, (119), 88 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:25,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 119 transitions. [2021-12-06 17:49:25,831 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 119 transitions. Word has length 33 [2021-12-06 17:49:25,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:25,831 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 119 transitions. [2021-12-06 17:49:25,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:25,832 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 119 transitions. [2021-12-06 17:49:25,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 17:49:25,833 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:25,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:49:25,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 17:49:25,834 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:25,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:25,834 INFO L85 PathProgramCache]: Analyzing trace with hash 988628396, now seen corresponding path program 1 times [2021-12-06 17:49:25,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:25,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307813736] [2021-12-06 17:49:25,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:25,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:49:25,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:25,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307813736] [2021-12-06 17:49:25,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307813736] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:25,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:49:25,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:49:25,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704088916] [2021-12-06 17:49:25,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:25,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:49:25,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:25,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:49:25,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:49:25,924 INFO L87 Difference]: Start difference. First operand 89 states and 119 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:25,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:25,947 INFO L93 Difference]: Finished difference Result 187 states and 273 transitions. [2021-12-06 17:49:25,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:49:25,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-12-06 17:49:25,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:25,949 INFO L225 Difference]: With dead ends: 187 [2021-12-06 17:49:25,949 INFO L226 Difference]: Without dead ends: 135 [2021-12-06 17:49:25,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:49:25,952 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 72 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:25,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 267 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:49:25,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-12-06 17:49:25,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2021-12-06 17:49:25,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.4318181818181819) internal successors, (189), 132 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:25,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 189 transitions. [2021-12-06 17:49:25,966 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 189 transitions. Word has length 63 [2021-12-06 17:49:25,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:25,966 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 189 transitions. [2021-12-06 17:49:25,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:25,966 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 189 transitions. [2021-12-06 17:49:25,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 17:49:25,968 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:25,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:49:25,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 17:49:25,968 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:25,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:25,969 INFO L85 PathProgramCache]: Analyzing trace with hash 243045666, now seen corresponding path program 1 times [2021-12-06 17:49:25,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:25,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541312310] [2021-12-06 17:49:25,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:25,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:26,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:49:26,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:26,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541312310] [2021-12-06 17:49:26,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541312310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:26,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:49:26,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:49:26,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922533194] [2021-12-06 17:49:26,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:26,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:49:26,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:26,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:49:26,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:49:26,043 INFO L87 Difference]: Start difference. First operand 133 states and 189 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:26,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:26,069 INFO L93 Difference]: Finished difference Result 313 states and 473 transitions. [2021-12-06 17:49:26,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:49:26,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-12-06 17:49:26,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:26,072 INFO L225 Difference]: With dead ends: 313 [2021-12-06 17:49:26,072 INFO L226 Difference]: Without dead ends: 217 [2021-12-06 17:49:26,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:49:26,075 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 68 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:26,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 266 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:49:26,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-06 17:49:26,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2021-12-06 17:49:26,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.485981308411215) internal successors, (318), 214 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:26,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 318 transitions. [2021-12-06 17:49:26,094 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 318 transitions. Word has length 63 [2021-12-06 17:49:26,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:26,095 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 318 transitions. [2021-12-06 17:49:26,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:26,095 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 318 transitions. [2021-12-06 17:49:26,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 17:49:26,097 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:26,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:49:26,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 17:49:26,097 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:26,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:26,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1696985192, now seen corresponding path program 1 times [2021-12-06 17:49:26,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:26,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559509074] [2021-12-06 17:49:26,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:26,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:26,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:49:26,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:26,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559509074] [2021-12-06 17:49:26,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559509074] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:26,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:49:26,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:49:26,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90266916] [2021-12-06 17:49:26,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:26,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:49:26,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:26,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:49:26,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:49:26,158 INFO L87 Difference]: Start difference. First operand 215 states and 318 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:26,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:26,183 INFO L93 Difference]: Finished difference Result 547 states and 840 transitions. [2021-12-06 17:49:26,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:49:26,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-12-06 17:49:26,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:26,186 INFO L225 Difference]: With dead ends: 547 [2021-12-06 17:49:26,186 INFO L226 Difference]: Without dead ends: 369 [2021-12-06 17:49:26,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:49:26,188 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 64 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:26,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 265 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:49:26,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-12-06 17:49:26,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 367. [2021-12-06 17:49:26,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.5136612021857923) internal successors, (554), 366 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:26,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 554 transitions. [2021-12-06 17:49:26,209 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 554 transitions. Word has length 63 [2021-12-06 17:49:26,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:26,210 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 554 transitions. [2021-12-06 17:49:26,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:26,210 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 554 transitions. [2021-12-06 17:49:26,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 17:49:26,211 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:26,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:49:26,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 17:49:26,211 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:26,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:26,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1003697422, now seen corresponding path program 1 times [2021-12-06 17:49:26,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:26,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976813094] [2021-12-06 17:49:26,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:26,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:26,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:49:26,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:26,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976813094] [2021-12-06 17:49:26,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976813094] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:26,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:49:26,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:49:26,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60758154] [2021-12-06 17:49:26,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:26,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:49:26,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:26,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:49:26,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:49:26,255 INFO L87 Difference]: Start difference. First operand 367 states and 554 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:26,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:26,282 INFO L93 Difference]: Finished difference Result 979 states and 1508 transitions. [2021-12-06 17:49:26,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:49:26,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-12-06 17:49:26,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:26,286 INFO L225 Difference]: With dead ends: 979 [2021-12-06 17:49:26,286 INFO L226 Difference]: Without dead ends: 649 [2021-12-06 17:49:26,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:49:26,288 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 60 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:26,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 264 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:49:26,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2021-12-06 17:49:26,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 647. [2021-12-06 17:49:26,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.520123839009288) internal successors, (982), 646 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:26,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 982 transitions. [2021-12-06 17:49:26,313 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 982 transitions. Word has length 63 [2021-12-06 17:49:26,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:26,313 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 982 transitions. [2021-12-06 17:49:26,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:26,314 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 982 transitions. [2021-12-06 17:49:26,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 17:49:26,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:26,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:49:26,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 17:49:26,315 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:26,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:26,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1341490564, now seen corresponding path program 1 times [2021-12-06 17:49:26,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:26,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87917893] [2021-12-06 17:49:26,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:26,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:49:26,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:26,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87917893] [2021-12-06 17:49:26,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87917893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:26,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:49:26,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:49:26,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338942541] [2021-12-06 17:49:26,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:26,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:49:26,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:26,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:49:26,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:49:26,359 INFO L87 Difference]: Start difference. First operand 647 states and 982 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:26,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:26,415 INFO L93 Difference]: Finished difference Result 1771 states and 2712 transitions. [2021-12-06 17:49:26,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:49:26,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-12-06 17:49:26,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:26,424 INFO L225 Difference]: With dead ends: 1771 [2021-12-06 17:49:26,424 INFO L226 Difference]: Without dead ends: 1161 [2021-12-06 17:49:26,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:49:26,427 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 56 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:26,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 263 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:49:26,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2021-12-06 17:49:26,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1159. [2021-12-06 17:49:26,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 1.5112262521588946) internal successors, (1750), 1158 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:26,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1750 transitions. [2021-12-06 17:49:26,483 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1750 transitions. Word has length 63 [2021-12-06 17:49:26,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:26,483 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 1750 transitions. [2021-12-06 17:49:26,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:26,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1750 transitions. [2021-12-06 17:49:26,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 17:49:26,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:26,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:49:26,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 17:49:26,485 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:26,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:26,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1735491334, now seen corresponding path program 1 times [2021-12-06 17:49:26,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:26,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651506118] [2021-12-06 17:49:26,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:26,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:49:26,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:26,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651506118] [2021-12-06 17:49:26,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651506118] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:26,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:49:26,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:49:26,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612141764] [2021-12-06 17:49:26,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:26,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:49:26,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:26,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:49:26,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:49:26,556 INFO L87 Difference]: Start difference. First operand 1159 states and 1750 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:27,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:27,003 INFO L93 Difference]: Finished difference Result 12379 states and 18880 transitions. [2021-12-06 17:49:27,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:49:27,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-12-06 17:49:27,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:27,052 INFO L225 Difference]: With dead ends: 12379 [2021-12-06 17:49:27,053 INFO L226 Difference]: Without dead ends: 11257 [2021-12-06 17:49:27,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:49:27,057 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 1317 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:27,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1317 Valid, 953 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:49:27,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11257 states. [2021-12-06 17:49:27,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11257 to 2279. [2021-12-06 17:49:27,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 2278 states have (on average 1.491659350307287) internal successors, (3398), 2278 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 3398 transitions. [2021-12-06 17:49:27,255 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 3398 transitions. Word has length 63 [2021-12-06 17:49:27,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:27,255 INFO L470 AbstractCegarLoop]: Abstraction has 2279 states and 3398 transitions. [2021-12-06 17:49:27,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:27,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 3398 transitions. [2021-12-06 17:49:27,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 17:49:27,256 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:27,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:49:27,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 17:49:27,257 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:27,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:27,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1519410410, now seen corresponding path program 1 times [2021-12-06 17:49:27,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:27,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243808443] [2021-12-06 17:49:27,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:27,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:49:27,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:27,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243808443] [2021-12-06 17:49:27,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243808443] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:27,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:49:27,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:49:27,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139490547] [2021-12-06 17:49:27,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:27,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:49:27,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:27,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:49:27,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:49:27,288 INFO L87 Difference]: Start difference. First operand 2279 states and 3398 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:27,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:27,442 INFO L93 Difference]: Finished difference Result 5565 states and 8314 transitions. [2021-12-06 17:49:27,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:49:27,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-12-06 17:49:27,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:27,457 INFO L225 Difference]: With dead ends: 5565 [2021-12-06 17:49:27,457 INFO L226 Difference]: Without dead ends: 3323 [2021-12-06 17:49:27,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:49:27,460 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 48 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:27,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 226 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:49:27,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2021-12-06 17:49:27,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3321. [2021-12-06 17:49:27,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3321 states, 3320 states have (on average 1.4771084337349398) internal successors, (4904), 3320 states have internal predecessors, (4904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:27,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 4904 transitions. [2021-12-06 17:49:27,661 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 4904 transitions. Word has length 65 [2021-12-06 17:49:27,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:27,661 INFO L470 AbstractCegarLoop]: Abstraction has 3321 states and 4904 transitions. [2021-12-06 17:49:27,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:27,661 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 4904 transitions. [2021-12-06 17:49:27,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 17:49:27,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:27,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:49:27,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 17:49:27,663 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:27,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:27,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1585903922, now seen corresponding path program 1 times [2021-12-06 17:49:27,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:27,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315487455] [2021-12-06 17:49:27,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:27,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:27,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:49:27,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:27,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315487455] [2021-12-06 17:49:27,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315487455] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:27,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:49:27,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:49:27,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928904131] [2021-12-06 17:49:27,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:27,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:49:27,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:27,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:49:27,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:49:27,797 INFO L87 Difference]: Start difference. First operand 3321 states and 4904 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:28,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:28,000 INFO L93 Difference]: Finished difference Result 6605 states and 9770 transitions. [2021-12-06 17:49:28,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:49:28,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-12-06 17:49:28,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:28,019 INFO L225 Difference]: With dead ends: 6605 [2021-12-06 17:49:28,026 INFO L226 Difference]: Without dead ends: 3323 [2021-12-06 17:49:28,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:49:28,031 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 337 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:28,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 425 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:49:28,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2021-12-06 17:49:28,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3321. [2021-12-06 17:49:28,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3321 states, 3320 states have (on average 1.4626506024096386) internal successors, (4856), 3320 states have internal predecessors, (4856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:28,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 4856 transitions. [2021-12-06 17:49:28,163 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 4856 transitions. Word has length 65 [2021-12-06 17:49:28,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:28,164 INFO L470 AbstractCegarLoop]: Abstraction has 3321 states and 4856 transitions. [2021-12-06 17:49:28,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:28,164 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 4856 transitions. [2021-12-06 17:49:28,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 17:49:28,164 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:28,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:49:28,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 17:49:28,165 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:28,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:28,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1503658279, now seen corresponding path program 1 times [2021-12-06 17:49:28,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:28,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390502237] [2021-12-06 17:49:28,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:28,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:49:28,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:28,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390502237] [2021-12-06 17:49:28,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390502237] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:28,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:49:28,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 17:49:28,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294783432] [2021-12-06 17:49:28,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:28,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:49:28,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:28,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:49:28,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:49:28,239 INFO L87 Difference]: Start difference. First operand 3321 states and 4856 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:28,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:28,579 INFO L93 Difference]: Finished difference Result 6164 states and 8906 transitions. [2021-12-06 17:49:28,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:49:28,580 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-12-06 17:49:28,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:28,612 INFO L225 Difference]: With dead ends: 6164 [2021-12-06 17:49:28,612 INFO L226 Difference]: Without dead ends: 6162 [2021-12-06 17:49:28,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:49:28,615 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 628 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:28,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 580 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:49:28,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6162 states. [2021-12-06 17:49:28,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6162 to 3513. [2021-12-06 17:49:28,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 3512 states have (on average 1.4328018223234624) internal successors, (5032), 3512 states have internal predecessors, (5032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:28,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 5032 transitions. [2021-12-06 17:49:28,795 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 5032 transitions. Word has length 66 [2021-12-06 17:49:28,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:28,795 INFO L470 AbstractCegarLoop]: Abstraction has 3513 states and 5032 transitions. [2021-12-06 17:49:28,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:28,795 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 5032 transitions. [2021-12-06 17:49:28,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 17:49:28,797 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:28,798 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:49:28,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 17:49:28,798 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:28,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:28,798 INFO L85 PathProgramCache]: Analyzing trace with hash 550206538, now seen corresponding path program 1 times [2021-12-06 17:49:28,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:28,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032868212] [2021-12-06 17:49:28,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:28,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:28,857 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 17:49:28,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:28,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032868212] [2021-12-06 17:49:28,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032868212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:28,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:49:28,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:49:28,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265606195] [2021-12-06 17:49:28,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:28,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:49:28,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:28,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:49:28,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:49:28,858 INFO L87 Difference]: Start difference. First operand 3513 states and 5032 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:29,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:29,566 INFO L93 Difference]: Finished difference Result 21589 states and 30958 transitions. [2021-12-06 17:49:29,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:49:29,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 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 94 [2021-12-06 17:49:29,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:29,592 INFO L225 Difference]: With dead ends: 21589 [2021-12-06 17:49:29,592 INFO L226 Difference]: Without dead ends: 18115 [2021-12-06 17:49:29,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:49:29,599 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 843 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:29,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 673 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:49:29,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18115 states. [2021-12-06 17:49:29,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18115 to 6985. [2021-12-06 17:49:29,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6985 states, 6984 states have (on average 1.4284077892325315) internal successors, (9976), 6984 states have internal predecessors, (9976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:29,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6985 states to 6985 states and 9976 transitions. [2021-12-06 17:49:29,959 INFO L78 Accepts]: Start accepts. Automaton has 6985 states and 9976 transitions. Word has length 94 [2021-12-06 17:49:29,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:29,959 INFO L470 AbstractCegarLoop]: Abstraction has 6985 states and 9976 transitions. [2021-12-06 17:49:29,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:29,959 INFO L276 IsEmpty]: Start isEmpty. Operand 6985 states and 9976 transitions. [2021-12-06 17:49:29,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 17:49:29,962 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:29,962 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:49:29,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 17:49:29,963 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:29,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:29,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1218576278, now seen corresponding path program 1 times [2021-12-06 17:49:29,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:29,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746076824] [2021-12-06 17:49:29,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:29,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 17:49:30,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:30,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746076824] [2021-12-06 17:49:30,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746076824] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:30,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:49:30,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:49:30,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666617596] [2021-12-06 17:49:30,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:30,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:49:30,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:30,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:49:30,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:49:30,029 INFO L87 Difference]: Start difference. First operand 6985 states and 9976 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:30,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:30,905 INFO L93 Difference]: Finished difference Result 25061 states and 35902 transitions. [2021-12-06 17:49:30,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:49:30,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 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 94 [2021-12-06 17:49:30,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:30,934 INFO L225 Difference]: With dead ends: 25061 [2021-12-06 17:49:30,934 INFO L226 Difference]: Without dead ends: 21587 [2021-12-06 17:49:30,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:49:30,940 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 739 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:30,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 738 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:49:30,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21587 states. [2021-12-06 17:49:31,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21587 to 12201. [2021-12-06 17:49:31,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12201 states, 12200 states have (on average 1.422295081967213) internal successors, (17352), 12200 states have internal predecessors, (17352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:31,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12201 states to 12201 states and 17352 transitions. [2021-12-06 17:49:31,470 INFO L78 Accepts]: Start accepts. Automaton has 12201 states and 17352 transitions. Word has length 94 [2021-12-06 17:49:31,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:31,470 INFO L470 AbstractCegarLoop]: Abstraction has 12201 states and 17352 transitions. [2021-12-06 17:49:31,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:31,471 INFO L276 IsEmpty]: Start isEmpty. Operand 12201 states and 17352 transitions. [2021-12-06 17:49:31,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 17:49:31,474 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:31,474 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:49:31,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 17:49:31,474 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:31,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:31,474 INFO L85 PathProgramCache]: Analyzing trace with hash -86936438, now seen corresponding path program 1 times [2021-12-06 17:49:31,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:31,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094887875] [2021-12-06 17:49:31,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:31,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:31,527 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 17:49:31,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:31,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094887875] [2021-12-06 17:49:31,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094887875] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:31,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:49:31,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:49:31,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564461816] [2021-12-06 17:49:31,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:31,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:49:31,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:31,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:49:31,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:49:31,529 INFO L87 Difference]: Start difference. First operand 12201 states and 17352 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:32,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:32,597 INFO L93 Difference]: Finished difference Result 28533 states and 40846 transitions. [2021-12-06 17:49:32,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:49:32,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 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 94 [2021-12-06 17:49:32,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:32,631 INFO L225 Difference]: With dead ends: 28533 [2021-12-06 17:49:32,632 INFO L226 Difference]: Without dead ends: 25059 [2021-12-06 17:49:32,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:49:32,639 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 756 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:32,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 750 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:49:32,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25059 states. [2021-12-06 17:49:33,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25059 to 15673. [2021-12-06 17:49:33,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15673 states, 15672 states have (on average 1.4226646248085757) internal successors, (22296), 15672 states have internal predecessors, (22296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15673 states to 15673 states and 22296 transitions. [2021-12-06 17:49:33,337 INFO L78 Accepts]: Start accepts. Automaton has 15673 states and 22296 transitions. Word has length 94 [2021-12-06 17:49:33,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:33,337 INFO L470 AbstractCegarLoop]: Abstraction has 15673 states and 22296 transitions. [2021-12-06 17:49:33,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:33,338 INFO L276 IsEmpty]: Start isEmpty. Operand 15673 states and 22296 transitions. [2021-12-06 17:49:33,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 17:49:33,341 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:33,341 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:49:33,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 17:49:33,341 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:33,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:33,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1322395478, now seen corresponding path program 1 times [2021-12-06 17:49:33,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:33,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308821162] [2021-12-06 17:49:33,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:33,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:33,394 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 17:49:33,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:33,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308821162] [2021-12-06 17:49:33,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308821162] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:33,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:49:33,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:49:33,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640758605] [2021-12-06 17:49:33,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:33,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:49:33,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:33,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:49:33,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:49:33,396 INFO L87 Difference]: Start difference. First operand 15673 states and 22296 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:34,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:34,600 INFO L93 Difference]: Finished difference Result 32005 states and 45790 transitions. [2021-12-06 17:49:34,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:49:34,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 94 [2021-12-06 17:49:34,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:34,631 INFO L225 Difference]: With dead ends: 32005 [2021-12-06 17:49:34,631 INFO L226 Difference]: Without dead ends: 28531 [2021-12-06 17:49:34,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:49:34,640 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 826 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:34,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 755 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:49:34,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28531 states. [2021-12-06 17:49:35,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28531 to 19145. [2021-12-06 17:49:35,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19145 states, 19144 states have (on average 1.42290012536565) internal successors, (27240), 19144 states have internal predecessors, (27240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:35,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19145 states to 19145 states and 27240 transitions. [2021-12-06 17:49:35,593 INFO L78 Accepts]: Start accepts. Automaton has 19145 states and 27240 transitions. Word has length 94 [2021-12-06 17:49:35,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:35,593 INFO L470 AbstractCegarLoop]: Abstraction has 19145 states and 27240 transitions. [2021-12-06 17:49:35,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:35,593 INFO L276 IsEmpty]: Start isEmpty. Operand 19145 states and 27240 transitions. [2021-12-06 17:49:35,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 17:49:35,597 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:35,597 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:49:35,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 17:49:35,597 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:35,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:35,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1551576266, now seen corresponding path program 1 times [2021-12-06 17:49:35,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:35,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001534945] [2021-12-06 17:49:35,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:35,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:35,649 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 17:49:35,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:35,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001534945] [2021-12-06 17:49:35,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001534945] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:49:35,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:49:35,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:49:35,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376269103] [2021-12-06 17:49:35,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:49:35,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:49:35,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:35,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:49:35,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:49:35,651 INFO L87 Difference]: Start difference. First operand 19145 states and 27240 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:36,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:36,946 INFO L93 Difference]: Finished difference Result 33397 states and 47790 transitions. [2021-12-06 17:49:36,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:49:36,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 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 94 [2021-12-06 17:49:36,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:36,978 INFO L225 Difference]: With dead ends: 33397 [2021-12-06 17:49:36,978 INFO L226 Difference]: Without dead ends: 30963 [2021-12-06 17:49:36,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:49:36,987 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 823 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:36,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [823 Valid, 698 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:49:37,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30963 states. [2021-12-06 17:49:38,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30963 to 21577. [2021-12-06 17:49:38,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21577 states, 21576 states have (on average 1.4241750092695589) internal successors, (30728), 21576 states have internal predecessors, (30728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:38,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21577 states to 21577 states and 30728 transitions. [2021-12-06 17:49:38,095 INFO L78 Accepts]: Start accepts. Automaton has 21577 states and 30728 transitions. Word has length 94 [2021-12-06 17:49:38,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:38,096 INFO L470 AbstractCegarLoop]: Abstraction has 21577 states and 30728 transitions. [2021-12-06 17:49:38,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:38,096 INFO L276 IsEmpty]: Start isEmpty. Operand 21577 states and 30728 transitions. [2021-12-06 17:49:38,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-06 17:49:38,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:38,100 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:49:38,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 17:49:38,100 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:38,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:38,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1418973216, now seen corresponding path program 1 times [2021-12-06 17:49:38,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:38,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969461021] [2021-12-06 17:49:38,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:38,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:38,169 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 17:49:38,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:38,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969461021] [2021-12-06 17:49:38,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969461021] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:49:38,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308141509] [2021-12-06 17:49:38,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:38,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:49:38,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:49:38,171 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:49:38,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 17:49:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:38,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 17:49:38,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:49:38,460 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 17:49:38,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:49:38,845 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 17:49:38,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308141509] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:49:38,846 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:49:38,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2021-12-06 17:49:38,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671358627] [2021-12-06 17:49:38,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:49:38,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:49:38,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:38,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:49:38,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:49:38,848 INFO L87 Difference]: Start difference. First operand 21577 states and 30728 transitions. Second operand has 9 states, 9 states have (on average 27.22222222222222) internal successors, (245), 9 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:41,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:49:41,231 INFO L93 Difference]: Finished difference Result 64812 states and 93081 transitions. [2021-12-06 17:49:41,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:49:41,232 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 27.22222222222222) internal successors, (245), 9 states have internal predecessors, (245), 0 states have call successors, (0), 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 95 [2021-12-06 17:49:41,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:49:41,278 INFO L225 Difference]: With dead ends: 64812 [2021-12-06 17:49:41,278 INFO L226 Difference]: Without dead ends: 49002 [2021-12-06 17:49:41,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:49:41,298 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 539 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:49:41,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 719 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:49:41,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49002 states. [2021-12-06 17:49:43,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49002 to 48473. [2021-12-06 17:49:43,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48473 states, 48472 states have (on average 1.4112889915827693) internal successors, (68408), 48472 states have internal predecessors, (68408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:43,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48473 states to 48473 states and 68408 transitions. [2021-12-06 17:49:43,813 INFO L78 Accepts]: Start accepts. Automaton has 48473 states and 68408 transitions. Word has length 95 [2021-12-06 17:49:43,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:49:43,814 INFO L470 AbstractCegarLoop]: Abstraction has 48473 states and 68408 transitions. [2021-12-06 17:49:43,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.22222222222222) internal successors, (245), 9 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:49:43,814 INFO L276 IsEmpty]: Start isEmpty. Operand 48473 states and 68408 transitions. [2021-12-06 17:49:43,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-06 17:49:43,817 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:49:43,818 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:49:43,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:49:44,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 17:49:44,020 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:49:44,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:49:44,023 INFO L85 PathProgramCache]: Analyzing trace with hash -881696638, now seen corresponding path program 1 times [2021-12-06 17:49:44,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:49:44,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006436259] [2021-12-06 17:49:44,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:44,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:49:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:44,261 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:49:44,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:49:44,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006436259] [2021-12-06 17:49:44,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006436259] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:49:44,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770149145] [2021-12-06 17:49:44,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:49:44,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:49:44,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:49:44,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:49:44,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 17:49:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:49:44,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 17:49:44,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:49:44,811 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:49:44,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:49:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:49:45,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770149145] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:49:45,543 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:49:45,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2021-12-06 17:49:45,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801402343] [2021-12-06 17:49:45,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:49:45,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 17:49:45,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:49:45,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 17:49:45,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2021-12-06 17:49:45,545 INFO L87 Difference]: Start difference. First operand 48473 states and 68408 transitions. Second operand has 30 states, 30 states have (on average 8.066666666666666) internal successors, (242), 29 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:50:45,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:50:45,401 INFO L93 Difference]: Finished difference Result 827807 states and 1138240 transitions. [2021-12-06 17:50:45,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 265 states. [2021-12-06 17:50:45,402 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.066666666666666) internal successors, (242), 29 states have internal predecessors, (242), 0 states have call successors, (0), 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 96 [2021-12-06 17:50:45,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:50:46,504 INFO L225 Difference]: With dead ends: 827807 [2021-12-06 17:50:46,504 INFO L226 Difference]: Without dead ends: 779373 [2021-12-06 17:50:46,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35849 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=10097, Invalid=75459, Unknown=0, NotChecked=0, Total=85556 [2021-12-06 17:50:46,673 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 7831 mSDsluCounter, 3654 mSDsCounter, 0 mSdLazyCounter, 4466 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7831 SdHoareTripleChecker+Valid, 4005 SdHoareTripleChecker+Invalid, 4954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 4466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:50:46,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7831 Valid, 4005 Invalid, 4954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 4466 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-06 17:50:47,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779373 states. [2021-12-06 17:51:06,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779373 to 243169. [2021-12-06 17:51:06,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243169 states, 243168 states have (on average 1.3961458744571653) internal successors, (339498), 243168 states have internal predecessors, (339498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:51:07,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243169 states to 243169 states and 339498 transitions. [2021-12-06 17:51:07,372 INFO L78 Accepts]: Start accepts. Automaton has 243169 states and 339498 transitions. Word has length 96 [2021-12-06 17:51:07,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:51:07,372 INFO L470 AbstractCegarLoop]: Abstraction has 243169 states and 339498 transitions. [2021-12-06 17:51:07,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.066666666666666) internal successors, (242), 29 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:51:07,372 INFO L276 IsEmpty]: Start isEmpty. Operand 243169 states and 339498 transitions. [2021-12-06 17:51:07,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-06 17:51:07,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:51:07,380 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 17:51:07,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 17:51:07,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 17:51:07,582 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:51:07,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:51:07,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1528395564, now seen corresponding path program 1 times [2021-12-06 17:51:07,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:51:07,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075751512] [2021-12-06 17:51:07,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:51:07,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:51:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:07,761 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:51:07,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:51:07,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075751512] [2021-12-06 17:51:07,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075751512] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:51:07,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645295743] [2021-12-06 17:51:07,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:51:07,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:51:07,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:51:07,763 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:51:07,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3f953d-4f52-4506-a54b-ee87d3b69616/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 17:51:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:51:07,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 17:51:07,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:51:08,352 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:51:08,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:51:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:51:08,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645295743] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:51:08,859 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:51:08,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2021-12-06 17:51:08,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533724485] [2021-12-06 17:51:08,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:51:08,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 17:51:08,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:51:08,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 17:51:08,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2021-12-06 17:51:08,860 INFO L87 Difference]: Start difference. First operand 243169 states and 339498 transitions. Second operand has 30 states, 30 states have (on average 9.133333333333333) internal successors, (274), 29 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:58:39,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:58:39,728 INFO L93 Difference]: Finished difference Result 5479397 states and 7479441 transitions. [2021-12-06 17:58:39,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 476 states. [2021-12-06 17:58:39,729 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.133333333333333) internal successors, (274), 29 states have internal predecessors, (274), 0 states have call successors, (0), 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 96 [2021-12-06 17:58:39,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:58:48,996 INFO L225 Difference]: With dead ends: 5479397 [2021-12-06 17:58:48,996 INFO L226 Difference]: Without dead ends: 5236267 [2021-12-06 17:58:51,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 502 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113304 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=23127, Invalid=230385, Unknown=0, NotChecked=0, Total=253512 [2021-12-06 17:58:51,092 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 10258 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 4916 mSolverCounterSat, 832 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10258 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 5748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 832 IncrementalHoareTripleChecker+Valid, 4916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:58:51,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10258 Valid, 3624 Invalid, 5748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [832 Valid, 4916 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-06 17:58:55,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5236267 states.