./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label14.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label14.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0ac429ca8e99b6512d8aadb8f8e502aadaca92db9137fa23838c552f61d5f382 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:15:03,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:15:03,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:15:03,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:15:03,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:15:03,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:15:03,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:15:03,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:15:03,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:15:03,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:15:03,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:15:03,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:15:03,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:15:03,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:15:03,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:15:03,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:15:03,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:15:03,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:15:03,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:15:03,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:15:03,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:15:03,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:15:03,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:15:03,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:15:03,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:15:03,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:15:03,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:15:03,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:15:03,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:15:03,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:15:03,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:15:03,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:15:03,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:15:03,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:15:03,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:15:03,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:15:03,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:15:03,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:15:03,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:15:03,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:15:03,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:15:03,772 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:15:03,812 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:15:03,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:15:03,813 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:15:03,813 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:15:03,814 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:15:03,814 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:15:03,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:15:03,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:15:03,815 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:15:03,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:15:03,817 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:15:03,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:15:03,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:15:03,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:15:03,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:15:03,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:15:03,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:15:03,818 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:15:03,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:15:03,819 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:15:03,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:15:03,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:15:03,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:15:03,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:15:03,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:15:03,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:15:03,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:15:03,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:15:03,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:15:03,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:15:03,821 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:15:03,822 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:15:03,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:15:03,822 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_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ac429ca8e99b6512d8aadb8f8e502aadaca92db9137fa23838c552f61d5f382 [2022-11-18 20:15:04,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:15:04,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:15:04,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:15:04,156 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:15:04,157 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:15:04,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/eca-rers2012/Problem17_label14.c [2022-11-18 20:15:04,243 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/data/8c4f5faa6/340d9796160341bea96b9f40215bb30d/FLAG8a4baf466 [2022-11-18 20:15:05,045 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:15:05,046 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/sv-benchmarks/c/eca-rers2012/Problem17_label14.c [2022-11-18 20:15:05,079 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/data/8c4f5faa6/340d9796160341bea96b9f40215bb30d/FLAG8a4baf466 [2022-11-18 20:15:05,124 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/data/8c4f5faa6/340d9796160341bea96b9f40215bb30d [2022-11-18 20:15:05,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:15:05,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:15:05,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:15:05,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:15:05,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:15:05,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:15:05" (1/1) ... [2022-11-18 20:15:05,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48daa36c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:05, skipping insertion in model container [2022-11-18 20:15:05,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:15:05" (1/1) ... [2022-11-18 20:15:05,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:15:05,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:15:05,582 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/sv-benchmarks/c/eca-rers2012/Problem17_label14.c[6990,7003] [2022-11-18 20:15:06,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:15:06,271 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:15:06,306 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/sv-benchmarks/c/eca-rers2012/Problem17_label14.c[6990,7003] [2022-11-18 20:15:06,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:15:06,867 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:15:06,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:06 WrapperNode [2022-11-18 20:15:06,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:15:06,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:15:06,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:15:06,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:15:06,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:06" (1/1) ... [2022-11-18 20:15:06,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:06" (1/1) ... [2022-11-18 20:15:07,309 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-11-18 20:15:07,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:15:07,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:15:07,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:15:07,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:15:07,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:06" (1/1) ... [2022-11-18 20:15:07,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:06" (1/1) ... [2022-11-18 20:15:07,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:06" (1/1) ... [2022-11-18 20:15:07,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:06" (1/1) ... [2022-11-18 20:15:07,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:06" (1/1) ... [2022-11-18 20:15:07,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:06" (1/1) ... [2022-11-18 20:15:07,544 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:06" (1/1) ... [2022-11-18 20:15:07,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:06" (1/1) ... [2022-11-18 20:15:07,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:15:07,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:15:07,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:15:07,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:15:07,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:06" (1/1) ... [2022-11-18 20:15:07,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:15:07,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:15:07,699 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:15:07,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:15:07,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:15:07,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:15:07,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:15:07,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:15:07,835 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:15:07,837 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:15:12,141 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:15:12,152 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:15:12,152 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:15:12,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:15:12 BoogieIcfgContainer [2022-11-18 20:15:12,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:15:12,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:15:12,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:15:12,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:15:12,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:15:05" (1/3) ... [2022-11-18 20:15:12,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e7e7534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:15:12, skipping insertion in model container [2022-11-18 20:15:12,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:06" (2/3) ... [2022-11-18 20:15:12,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e7e7534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:15:12, skipping insertion in model container [2022-11-18 20:15:12,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:15:12" (3/3) ... [2022-11-18 20:15:12,165 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label14.c [2022-11-18 20:15:12,184 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:15:12,184 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:15:12,281 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:15:12,289 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@212f005a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:15:12,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:15:12,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:12,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-18 20:15:12,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:12,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:12,311 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:12,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:12,318 INFO L85 PathProgramCache]: Analyzing trace with hash 433832817, now seen corresponding path program 1 times [2022-11-18 20:15:12,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:12,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145468148] [2022-11-18 20:15:12,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:12,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:12,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:12,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145468148] [2022-11-18 20:15:12,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145468148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:12,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:12,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:15:12,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899489020] [2022-11-18 20:15:12,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:12,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:15:12,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:12,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:15:12,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:15:12,800 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:16,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:16,428 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2022-11-18 20:15:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:15:16,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-11-18 20:15:16,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:16,452 INFO L225 Difference]: With dead ends: 1642 [2022-11-18 20:15:16,452 INFO L226 Difference]: Without dead ends: 975 [2022-11-18 20:15:16,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:15:16,462 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 443 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:16,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-18 20:15:16,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-11-18 20:15:16,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2022-11-18 20:15:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:16,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2022-11-18 20:15:16,595 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 47 [2022-11-18 20:15:16,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:16,596 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2022-11-18 20:15:16,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:16,597 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2022-11-18 20:15:16,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-18 20:15:16,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:16,600 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:16,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:15:16,601 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:16,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:16,602 INFO L85 PathProgramCache]: Analyzing trace with hash -220367068, now seen corresponding path program 1 times [2022-11-18 20:15:16,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:16,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644946713] [2022-11-18 20:15:16,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:16,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:17,079 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:17,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:17,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644946713] [2022-11-18 20:15:17,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644946713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:17,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:17,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:15:17,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969870350] [2022-11-18 20:15:17,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:17,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:15:17,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:17,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:15:17,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:15:17,086 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:20,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:20,347 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2022-11-18 20:15:20,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:15:20,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2022-11-18 20:15:20,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:20,362 INFO L225 Difference]: With dead ends: 2814 [2022-11-18 20:15:20,363 INFO L226 Difference]: Without dead ends: 1844 [2022-11-18 20:15:20,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:15:20,375 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 444 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:20,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-18 20:15:20,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-11-18 20:15:20,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2022-11-18 20:15:20,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:20,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2022-11-18 20:15:20,462 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 117 [2022-11-18 20:15:20,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:20,467 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2022-11-18 20:15:20,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:20,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2022-11-18 20:15:20,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-18 20:15:20,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:20,483 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:20,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:15:20,485 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:20,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:20,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1980465569, now seen corresponding path program 1 times [2022-11-18 20:15:20,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:20,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061110840] [2022-11-18 20:15:20,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:20,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:20,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:20,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061110840] [2022-11-18 20:15:20,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061110840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:20,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:20,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:15:20,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196341585] [2022-11-18 20:15:20,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:20,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:15:20,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:20,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:15:20,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:15:20,740 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:23,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:23,504 INFO L93 Difference]: Finished difference Result 5395 states and 7326 transitions. [2022-11-18 20:15:23,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:15:23,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-11-18 20:15:23,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:23,514 INFO L225 Difference]: With dead ends: 5395 [2022-11-18 20:15:23,514 INFO L226 Difference]: Without dead ends: 2701 [2022-11-18 20:15:23,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:15:23,524 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:23,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-18 20:15:23,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2022-11-18 20:15:23,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2022-11-18 20:15:23,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.191851851851852) internal successors, (3218), 2700 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:23,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3218 transitions. [2022-11-18 20:15:23,587 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3218 transitions. Word has length 139 [2022-11-18 20:15:23,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:23,589 INFO L495 AbstractCegarLoop]: Abstraction has 2701 states and 3218 transitions. [2022-11-18 20:15:23,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:23,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3218 transitions. [2022-11-18 20:15:23,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-18 20:15:23,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:23,596 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:23,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:15:23,596 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:23,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:23,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1103271090, now seen corresponding path program 1 times [2022-11-18 20:15:23,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:23,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620000646] [2022-11-18 20:15:23,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:23,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:23,939 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:23,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:23,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620000646] [2022-11-18 20:15:23,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620000646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:23,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:23,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:15:23,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583999525] [2022-11-18 20:15:23,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:23,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:15:23,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:23,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:15:23,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:15:23,947 INFO L87 Difference]: Start difference. First operand 2701 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:26,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:26,565 INFO L93 Difference]: Finished difference Result 7108 states and 8598 transitions. [2022-11-18 20:15:26,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:15:26,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 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 199 [2022-11-18 20:15:26,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:26,580 INFO L225 Difference]: With dead ends: 7108 [2022-11-18 20:15:26,581 INFO L226 Difference]: Without dead ends: 4409 [2022-11-18 20:15:26,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:15:26,591 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:26,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-18 20:15:26,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2022-11-18 20:15:26,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2022-11-18 20:15:26,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 1.1705989110707804) internal successors, (5160), 4408 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:26,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5160 transitions. [2022-11-18 20:15:26,748 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5160 transitions. Word has length 199 [2022-11-18 20:15:26,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:26,750 INFO L495 AbstractCegarLoop]: Abstraction has 4409 states and 5160 transitions. [2022-11-18 20:15:26,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:26,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5160 transitions. [2022-11-18 20:15:26,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-18 20:15:26,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:26,754 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:26,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:15:26,754 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:26,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:26,755 INFO L85 PathProgramCache]: Analyzing trace with hash 814886771, now seen corresponding path program 1 times [2022-11-18 20:15:26,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:26,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434506109] [2022-11-18 20:15:26,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:26,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:26,990 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-18 20:15:26,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:26,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434506109] [2022-11-18 20:15:26,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434506109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:26,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:26,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:15:26,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434163796] [2022-11-18 20:15:26,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:26,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:15:26,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:26,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:15:26,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:15:26,993 INFO L87 Difference]: Start difference. First operand 4409 states and 5160 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:29,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:29,669 INFO L93 Difference]: Finished difference Result 10936 states and 12970 transitions. [2022-11-18 20:15:29,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:15:29,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 201 [2022-11-18 20:15:29,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:29,689 INFO L225 Difference]: With dead ends: 10936 [2022-11-18 20:15:29,689 INFO L226 Difference]: Without dead ends: 6528 [2022-11-18 20:15:29,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:15:29,695 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 404 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:29,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-18 20:15:29,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2022-11-18 20:15:29,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4382. [2022-11-18 20:15:29,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 1.1684546907098836) internal successors, (5119), 4381 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:29,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5119 transitions. [2022-11-18 20:15:29,849 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5119 transitions. Word has length 201 [2022-11-18 20:15:29,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:29,850 INFO L495 AbstractCegarLoop]: Abstraction has 4382 states and 5119 transitions. [2022-11-18 20:15:29,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:29,850 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5119 transitions. [2022-11-18 20:15:29,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-11-18 20:15:29,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:29,856 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:29,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:15:29,858 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:29,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:29,859 INFO L85 PathProgramCache]: Analyzing trace with hash 706596333, now seen corresponding path program 1 times [2022-11-18 20:15:29,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:29,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981080096] [2022-11-18 20:15:29,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:29,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:30,367 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-18 20:15:30,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:30,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981080096] [2022-11-18 20:15:30,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981080096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:30,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:30,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:15:30,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047370196] [2022-11-18 20:15:30,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:30,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:15:30,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:30,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:15:30,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:15:30,370 INFO L87 Difference]: Start difference. First operand 4382 states and 5119 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:33,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:33,039 INFO L93 Difference]: Finished difference Result 10910 states and 12924 transitions. [2022-11-18 20:15:33,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:15:33,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 267 [2022-11-18 20:15:33,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:33,059 INFO L225 Difference]: With dead ends: 10910 [2022-11-18 20:15:33,059 INFO L226 Difference]: Without dead ends: 6530 [2022-11-18 20:15:33,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:15:33,065 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 458 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:33,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 413 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-18 20:15:33,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6530 states. [2022-11-18 20:15:33,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6530 to 6096. [2022-11-18 20:15:33,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6096 states, 6095 states have (on average 1.188515176374077) internal successors, (7244), 6095 states have internal predecessors, (7244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:33,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6096 states to 6096 states and 7244 transitions. [2022-11-18 20:15:33,240 INFO L78 Accepts]: Start accepts. Automaton has 6096 states and 7244 transitions. Word has length 267 [2022-11-18 20:15:33,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:33,241 INFO L495 AbstractCegarLoop]: Abstraction has 6096 states and 7244 transitions. [2022-11-18 20:15:33,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:33,241 INFO L276 IsEmpty]: Start isEmpty. Operand 6096 states and 7244 transitions. [2022-11-18 20:15:33,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-11-18 20:15:33,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:33,247 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:33,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:15:33,247 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:33,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:33,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1635641841, now seen corresponding path program 1 times [2022-11-18 20:15:33,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:33,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729883562] [2022-11-18 20:15:33,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:33,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-18 20:15:33,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:33,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729883562] [2022-11-18 20:15:33,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729883562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:33,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:33,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:15:33,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606240852] [2022-11-18 20:15:33,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:33,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:15:33,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:33,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:15:33,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:15:33,674 INFO L87 Difference]: Start difference. First operand 6096 states and 7244 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:36,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:36,351 INFO L93 Difference]: Finished difference Result 15622 states and 18732 transitions. [2022-11-18 20:15:36,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:15:36,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 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 279 [2022-11-18 20:15:36,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:36,422 INFO L225 Difference]: With dead ends: 15622 [2022-11-18 20:15:36,428 INFO L226 Difference]: Without dead ends: 8653 [2022-11-18 20:15:36,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:15:36,434 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 492 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:36,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 628 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-18 20:15:36,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8653 states. [2022-11-18 20:15:36,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8653 to 8222. [2022-11-18 20:15:36,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8222 states, 8221 states have (on average 1.1763775696387302) internal successors, (9671), 8221 states have internal predecessors, (9671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:36,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8222 states to 8222 states and 9671 transitions. [2022-11-18 20:15:36,591 INFO L78 Accepts]: Start accepts. Automaton has 8222 states and 9671 transitions. Word has length 279 [2022-11-18 20:15:36,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:36,592 INFO L495 AbstractCegarLoop]: Abstraction has 8222 states and 9671 transitions. [2022-11-18 20:15:36,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:36,593 INFO L276 IsEmpty]: Start isEmpty. Operand 8222 states and 9671 transitions. [2022-11-18 20:15:36,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-11-18 20:15:36,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:36,600 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:36,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:15:36,600 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:36,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:36,601 INFO L85 PathProgramCache]: Analyzing trace with hash -456337817, now seen corresponding path program 1 times [2022-11-18 20:15:36,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:36,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264884567] [2022-11-18 20:15:36,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:36,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:37,224 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-18 20:15:37,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:37,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264884567] [2022-11-18 20:15:37,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264884567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:37,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:37,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:15:37,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434912056] [2022-11-18 20:15:37,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:37,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:15:37,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:37,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:15:37,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:15:37,227 INFO L87 Difference]: Start difference. First operand 8222 states and 9671 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:41,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:41,882 INFO L93 Difference]: Finished difference Result 30139 states and 35484 transitions. [2022-11-18 20:15:41,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:15:41,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 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 307 [2022-11-18 20:15:41,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:41,916 INFO L225 Difference]: With dead ends: 30139 [2022-11-18 20:15:41,916 INFO L226 Difference]: Without dead ends: 21064 [2022-11-18 20:15:41,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:15:41,927 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 874 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2492 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 2492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:41,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 242 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 2492 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-18 20:15:41,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21064 states. [2022-11-18 20:15:42,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21064 to 20596. [2022-11-18 20:15:42,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20596 states, 20595 states have (on average 1.1576110706482157) internal successors, (23841), 20595 states have internal predecessors, (23841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:42,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20596 states to 20596 states and 23841 transitions. [2022-11-18 20:15:42,234 INFO L78 Accepts]: Start accepts. Automaton has 20596 states and 23841 transitions. Word has length 307 [2022-11-18 20:15:42,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:42,235 INFO L495 AbstractCegarLoop]: Abstraction has 20596 states and 23841 transitions. [2022-11-18 20:15:42,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:42,235 INFO L276 IsEmpty]: Start isEmpty. Operand 20596 states and 23841 transitions. [2022-11-18 20:15:42,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-11-18 20:15:42,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:42,246 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:42,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:15:42,248 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:42,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:42,249 INFO L85 PathProgramCache]: Analyzing trace with hash -847313106, now seen corresponding path program 1 times [2022-11-18 20:15:42,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:42,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855017386] [2022-11-18 20:15:42,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:42,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:43,101 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 232 proven. 82 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-18 20:15:43,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:43,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855017386] [2022-11-18 20:15:43,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855017386] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:15:43,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206435436] [2022-11-18 20:15:43,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:43,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:15:43,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:15:43,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:15:43,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:15:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:43,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:15:43,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 206 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:44,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:15:45,003 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:45,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206435436] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 20:15:45,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:15:45,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2022-11-18 20:15:45,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518710156] [2022-11-18 20:15:45,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:45,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:15:45,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:45,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:15:45,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:15:45,007 INFO L87 Difference]: Start difference. First operand 20596 states and 23841 transitions. Second operand has 5 states, 5 states have (on average 77.6) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:49,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:49,948 INFO L93 Difference]: Finished difference Result 62901 states and 72227 transitions. [2022-11-18 20:15:49,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:15:49,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 77.6) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 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 388 [2022-11-18 20:15:49,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:50,019 INFO L225 Difference]: With dead ends: 62901 [2022-11-18 20:15:50,019 INFO L226 Difference]: Without dead ends: 41455 [2022-11-18 20:15:50,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 769 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:15:50,044 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 1284 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 3066 mSolverCounterSat, 666 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 3732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 666 IncrementalHoareTripleChecker+Valid, 3066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:50,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1284 Valid, 169 Invalid, 3732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [666 Valid, 3066 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-18 20:15:50,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41455 states. [2022-11-18 20:15:50,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41455 to 41441. [2022-11-18 20:15:50,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41441 states, 41440 states have (on average 1.1064913127413127) internal successors, (45853), 41440 states have internal predecessors, (45853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:50,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41441 states to 41441 states and 45853 transitions. [2022-11-18 20:15:50,747 INFO L78 Accepts]: Start accepts. Automaton has 41441 states and 45853 transitions. Word has length 388 [2022-11-18 20:15:50,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:50,748 INFO L495 AbstractCegarLoop]: Abstraction has 41441 states and 45853 transitions. [2022-11-18 20:15:50,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.6) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:50,749 INFO L276 IsEmpty]: Start isEmpty. Operand 41441 states and 45853 transitions. [2022-11-18 20:15:50,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2022-11-18 20:15:50,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:50,762 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:50,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:15:50,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:15:50,969 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:50,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:50,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1990257399, now seen corresponding path program 1 times [2022-11-18 20:15:50,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:50,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024507878] [2022-11-18 20:15:50,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:50,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 349 proven. 45 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-18 20:15:52,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:52,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024507878] [2022-11-18 20:15:52,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024507878] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:15:52,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019601132] [2022-11-18 20:15:52,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:52,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:15:52,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:15:52,182 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:15:52,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:15:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:52,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:15:52,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:53,085 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 419 proven. 82 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-18 20:15:53,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:15:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 419 proven. 82 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-18 20:15:54,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019601132] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:15:54,356 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:15:54,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2022-11-18 20:15:54,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762151818] [2022-11-18 20:15:54,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:15:54,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:15:54,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:54,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:15:54,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:15:54,359 INFO L87 Difference]: Start difference. First operand 41441 states and 45853 transitions. Second operand has 9 states, 9 states have (on average 82.44444444444444) internal successors, (742), 9 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:08,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:08,762 INFO L93 Difference]: Finished difference Result 123385 states and 136527 transitions. [2022-11-18 20:16:08,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:16:08,763 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 82.44444444444444) internal successors, (742), 9 states have internal predecessors, (742), 0 states have call successors, (0), 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 427 [2022-11-18 20:16:08,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:08,853 INFO L225 Difference]: With dead ends: 123385 [2022-11-18 20:16:08,853 INFO L226 Difference]: Without dead ends: 79389 [2022-11-18 20:16:09,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 858 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:16:09,018 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 7806 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 8591 mSolverCounterSat, 2418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7806 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 11009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2418 IncrementalHoareTripleChecker+Valid, 8591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:09,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7806 Valid, 292 Invalid, 11009 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2418 Valid, 8591 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2022-11-18 20:16:09,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79389 states. [2022-11-18 20:16:09,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79389 to 64384. [2022-11-18 20:16:09,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64384 states, 64383 states have (on average 1.093052513862355) internal successors, (70374), 64383 states have internal predecessors, (70374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:10,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64384 states to 64384 states and 70374 transitions. [2022-11-18 20:16:10,256 INFO L78 Accepts]: Start accepts. Automaton has 64384 states and 70374 transitions. Word has length 427 [2022-11-18 20:16:10,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:10,270 INFO L495 AbstractCegarLoop]: Abstraction has 64384 states and 70374 transitions. [2022-11-18 20:16:10,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 82.44444444444444) internal successors, (742), 9 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:10,271 INFO L276 IsEmpty]: Start isEmpty. Operand 64384 states and 70374 transitions. [2022-11-18 20:16:10,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2022-11-18 20:16:10,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:10,310 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:10,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:16:10,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc6535d4-b003-400f-8f1c-18dc15a1359c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:16:10,518 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:10,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:10,519 INFO L85 PathProgramCache]: Analyzing trace with hash 280124704, now seen corresponding path program 1 times [2022-11-18 20:16:10,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:10,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658272204] [2022-11-18 20:16:10,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:10,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:11,517 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 453 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-18 20:16:11,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:11,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658272204] [2022-11-18 20:16:11,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658272204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:11,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:11,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:16:11,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117800630] [2022-11-18 20:16:11,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:11,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:16:11,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:11,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:16:11,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:16:11,520 INFO L87 Difference]: Start difference. First operand 64384 states and 70374 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:14,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:14,221 INFO L93 Difference]: Finished difference Result 137701 states and 150637 transitions. [2022-11-18 20:16:14,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:16:14,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 526 [2022-11-18 20:16:14,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:14,416 INFO L225 Difference]: With dead ends: 137701 [2022-11-18 20:16:14,416 INFO L226 Difference]: Without dead ends: 72894 [2022-11-18 20:16:14,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:16:14,482 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 344 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:14,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 689 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 20:16:14,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72894 states. [2022-11-18 20:16:15,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72894 to 69905. [2022-11-18 20:16:15,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69905 states, 69904 states have (on average 1.0839579995422293) internal successors, (75773), 69904 states have internal predecessors, (75773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:15,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69905 states to 69905 states and 75773 transitions. [2022-11-18 20:16:15,446 INFO L78 Accepts]: Start accepts. Automaton has 69905 states and 75773 transitions. Word has length 526 [2022-11-18 20:16:15,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:15,447 INFO L495 AbstractCegarLoop]: Abstraction has 69905 states and 75773 transitions. [2022-11-18 20:16:15,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:15,448 INFO L276 IsEmpty]: Start isEmpty. Operand 69905 states and 75773 transitions. [2022-11-18 20:16:15,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2022-11-18 20:16:15,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:15,471 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:15,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:16:15,471 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:15,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:15,472 INFO L85 PathProgramCache]: Analyzing trace with hash 794875444, now seen corresponding path program 1 times [2022-11-18 20:16:15,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:15,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132665287] [2022-11-18 20:16:15,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:15,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 572 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-18 20:16:16,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:16,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132665287] [2022-11-18 20:16:16,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132665287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:16,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:16,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:16:16,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951251389] [2022-11-18 20:16:16,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:16,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:16:16,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:16,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:16:16,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:16:16,173 INFO L87 Difference]: Start difference. First operand 69905 states and 75773 transitions. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:18,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:18,519 INFO L93 Difference]: Finished difference Result 145331 states and 157391 transitions. [2022-11-18 20:16:18,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:16:18,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 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 534 [2022-11-18 20:16:18,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:18,586 INFO L225 Difference]: With dead ends: 145331 [2022-11-18 20:16:18,586 INFO L226 Difference]: Without dead ends: 75428 [2022-11-18 20:16:18,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:16:18,618 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 236 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:18,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 724 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 20:16:18,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75428 states. [2022-11-18 20:16:19,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75428 to 73301. [2022-11-18 20:16:19,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73301 states, 73300 states have (on average 1.075675306957708) internal successors, (78847), 73300 states have internal predecessors, (78847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:19,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73301 states to 73301 states and 78847 transitions. [2022-11-18 20:16:19,783 INFO L78 Accepts]: Start accepts. Automaton has 73301 states and 78847 transitions. Word has length 534 [2022-11-18 20:16:19,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:19,783 INFO L495 AbstractCegarLoop]: Abstraction has 73301 states and 78847 transitions. [2022-11-18 20:16:19,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:19,784 INFO L276 IsEmpty]: Start isEmpty. Operand 73301 states and 78847 transitions. [2022-11-18 20:16:19,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2022-11-18 20:16:19,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:19,800 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:19,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:16:19,800 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:19,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:19,801 INFO L85 PathProgramCache]: Analyzing trace with hash 615543433, now seen corresponding path program 1 times [2022-11-18 20:16:19,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:19,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218206619] [2022-11-18 20:16:19,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:19,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:20,377 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 408 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-11-18 20:16:20,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:20,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218206619] [2022-11-18 20:16:20,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218206619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:20,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:20,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:16:20,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986743514] [2022-11-18 20:16:20,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:20,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:16:20,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:20,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:16:20,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:16:20,380 INFO L87 Difference]: Start difference. First operand 73301 states and 78847 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:23,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:23,266 INFO L93 Difference]: Finished difference Result 153834 states and 165499 transitions. [2022-11-18 20:16:23,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:16:23,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 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 561 [2022-11-18 20:16:23,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:23,336 INFO L225 Difference]: With dead ends: 153834 [2022-11-18 20:16:23,336 INFO L226 Difference]: Without dead ends: 80535 [2022-11-18 20:16:23,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:16:23,352 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 484 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:23,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 658 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-18 20:16:23,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80535 states. [2022-11-18 20:16:24,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80535 to 80527. [2022-11-18 20:16:24,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80527 states, 80526 states have (on average 1.0707224995653577) internal successors, (86221), 80526 states have internal predecessors, (86221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:24,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80527 states to 80527 states and 86221 transitions. [2022-11-18 20:16:24,435 INFO L78 Accepts]: Start accepts. Automaton has 80527 states and 86221 transitions. Word has length 561 [2022-11-18 20:16:24,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:24,436 INFO L495 AbstractCegarLoop]: Abstraction has 80527 states and 86221 transitions. [2022-11-18 20:16:24,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:24,436 INFO L276 IsEmpty]: Start isEmpty. Operand 80527 states and 86221 transitions. [2022-11-18 20:16:24,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2022-11-18 20:16:24,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:24,457 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:24,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:16:24,457 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:24,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:24,457 INFO L85 PathProgramCache]: Analyzing trace with hash 2113094307, now seen corresponding path program 1 times [2022-11-18 20:16:24,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:24,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334926460] [2022-11-18 20:16:24,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:24,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 521 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-11-18 20:16:25,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:25,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334926460] [2022-11-18 20:16:25,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334926460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:25,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:25,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:16:25,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363379699] [2022-11-18 20:16:25,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:25,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:16:25,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:25,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:16:25,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:16:25,763 INFO L87 Difference]: Start difference. First operand 80527 states and 86221 transitions. Second operand has 4 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:30,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:30,218 INFO L93 Difference]: Finished difference Result 176810 states and 189107 transitions. [2022-11-18 20:16:30,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:16:30,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 0 states have call successors, (0), 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 600 [2022-11-18 20:16:30,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:30,525 INFO L225 Difference]: With dead ends: 176810 [2022-11-18 20:16:30,537 INFO L226 Difference]: Without dead ends: 95435 [2022-11-18 20:16:30,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:16:30,579 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 678 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:30,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 187 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-18 20:16:30,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95435 states. [2022-11-18 20:16:31,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95435 to 86906. [2022-11-18 20:16:31,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86906 states, 86905 states have (on average 1.071791036188942) internal successors, (93144), 86905 states have internal predecessors, (93144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:31,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86906 states to 86906 states and 93144 transitions. [2022-11-18 20:16:31,644 INFO L78 Accepts]: Start accepts. Automaton has 86906 states and 93144 transitions. Word has length 600 [2022-11-18 20:16:31,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:31,645 INFO L495 AbstractCegarLoop]: Abstraction has 86906 states and 93144 transitions. [2022-11-18 20:16:31,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:31,645 INFO L276 IsEmpty]: Start isEmpty. Operand 86906 states and 93144 transitions. [2022-11-18 20:16:31,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2022-11-18 20:16:31,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:31,661 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:31,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:16:31,662 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:31,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:31,663 INFO L85 PathProgramCache]: Analyzing trace with hash -140810256, now seen corresponding path program 1 times [2022-11-18 20:16:31,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:31,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895923635] [2022-11-18 20:16:31,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:31,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:33,114 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 505 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-11-18 20:16:33,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:33,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895923635] [2022-11-18 20:16:33,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895923635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:33,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:33,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:16:33,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551488311] [2022-11-18 20:16:33,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:33,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:16:33,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:33,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:16:33,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:16:33,118 INFO L87 Difference]: Start difference. First operand 86906 states and 93144 transitions. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:35,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:35,615 INFO L93 Difference]: Finished difference Result 174662 states and 187172 transitions. [2022-11-18 20:16:35,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:16:35,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 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 611 [2022-11-18 20:16:35,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:35,694 INFO L225 Difference]: With dead ends: 174662 [2022-11-18 20:16:35,694 INFO L226 Difference]: Without dead ends: 87758 [2022-11-18 20:16:35,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:16:35,728 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 94 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:35,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 758 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-18 20:16:35,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87758 states. [2022-11-18 20:16:36,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87758 to 87757. [2022-11-18 20:16:36,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87757 states, 87756 states have (on average 1.0704111399790328) internal successors, (93935), 87756 states have internal predecessors, (93935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:37,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87757 states to 87757 states and 93935 transitions. [2022-11-18 20:16:37,003 INFO L78 Accepts]: Start accepts. Automaton has 87757 states and 93935 transitions. Word has length 611 [2022-11-18 20:16:37,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:37,003 INFO L495 AbstractCegarLoop]: Abstraction has 87757 states and 93935 transitions. [2022-11-18 20:16:37,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:37,004 INFO L276 IsEmpty]: Start isEmpty. Operand 87757 states and 93935 transitions. [2022-11-18 20:16:37,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2022-11-18 20:16:37,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:37,016 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:37,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:16:37,016 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:37,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:37,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1184151290, now seen corresponding path program 1 times [2022-11-18 20:16:37,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:37,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805696498] [2022-11-18 20:16:37,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:37,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:38,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 805 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-11-18 20:16:38,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:38,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805696498] [2022-11-18 20:16:38,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805696498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:38,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:38,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:16:38,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898016476] [2022-11-18 20:16:38,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:38,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:16:38,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:38,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:16:38,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:16:38,061 INFO L87 Difference]: Start difference. First operand 87757 states and 93935 transitions. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:41,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:41,093 INFO L93 Difference]: Finished difference Result 190409 states and 204183 transitions. [2022-11-18 20:16:41,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:16:41,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 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 616 [2022-11-18 20:16:41,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:41,507 INFO L225 Difference]: With dead ends: 190409 [2022-11-18 20:16:41,507 INFO L226 Difference]: Without dead ends: 102654 [2022-11-18 20:16:41,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:16:41,532 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 269 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:41,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 270 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 20:16:41,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102654 states. [2022-11-18 20:16:42,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102654 to 94555. [2022-11-18 20:16:42,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94555 states, 94554 states have (on average 1.0618271040886689) internal successors, (100400), 94554 states have internal predecessors, (100400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:42,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94555 states to 94555 states and 100400 transitions. [2022-11-18 20:16:42,727 INFO L78 Accepts]: Start accepts. Automaton has 94555 states and 100400 transitions. Word has length 616 [2022-11-18 20:16:42,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:42,728 INFO L495 AbstractCegarLoop]: Abstraction has 94555 states and 100400 transitions. [2022-11-18 20:16:42,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:42,728 INFO L276 IsEmpty]: Start isEmpty. Operand 94555 states and 100400 transitions. [2022-11-18 20:16:42,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2022-11-18 20:16:42,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:42,753 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:42,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:16:42,754 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:42,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:42,754 INFO L85 PathProgramCache]: Analyzing trace with hash -714631971, now seen corresponding path program 1 times [2022-11-18 20:16:42,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:42,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795551652] [2022-11-18 20:16:42,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:42,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:43,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 511 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2022-11-18 20:16:43,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:43,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795551652] [2022-11-18 20:16:43,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795551652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:43,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:43,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:16:43,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405842556] [2022-11-18 20:16:43,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:43,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:16:43,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:43,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:16:43,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:16:43,890 INFO L87 Difference]: Start difference. First operand 94555 states and 100400 transitions. Second operand has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:48,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:48,285 INFO L93 Difference]: Finished difference Result 111193 states and 117949 transitions. [2022-11-18 20:16:48,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:16:48,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 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 722 [2022-11-18 20:16:48,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:48,420 INFO L225 Difference]: With dead ends: 111193 [2022-11-18 20:16:48,420 INFO L226 Difference]: Without dead ends: 110766 [2022-11-18 20:16:48,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:16:48,444 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 857 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 2744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:48,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 123 Invalid, 2744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-18 20:16:48,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110766 states. [2022-11-18 20:16:49,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110766 to 94555. [2022-11-18 20:16:49,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94555 states, 94554 states have (on average 1.0617742242528079) internal successors, (100395), 94554 states have internal predecessors, (100395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:50,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94555 states to 94555 states and 100395 transitions. [2022-11-18 20:16:50,126 INFO L78 Accepts]: Start accepts. Automaton has 94555 states and 100395 transitions. Word has length 722 [2022-11-18 20:16:50,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:50,129 INFO L495 AbstractCegarLoop]: Abstraction has 94555 states and 100395 transitions. [2022-11-18 20:16:50,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:50,129 INFO L276 IsEmpty]: Start isEmpty. Operand 94555 states and 100395 transitions. [2022-11-18 20:16:50,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2022-11-18 20:16:50,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:50,201 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:50,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:16:50,202 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:50,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:50,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1064493514, now seen corresponding path program 1 times [2022-11-18 20:16:50,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:50,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523825472] [2022-11-18 20:16:50,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:50,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:50,882 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 553 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-18 20:16:50,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:50,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523825472] [2022-11-18 20:16:50,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523825472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:50,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:50,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:16:50,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64944360] [2022-11-18 20:16:50,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:50,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:16:50,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:50,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:16:50,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:16:50,885 INFO L87 Difference]: Start difference. First operand 94555 states and 100395 transitions. Second operand has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:55,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:55,517 INFO L93 Difference]: Finished difference Result 208297 states and 220761 transitions. [2022-11-18 20:16:55,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:16:55,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 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 752 [2022-11-18 20:16:55,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:55,636 INFO L225 Difference]: With dead ends: 208297 [2022-11-18 20:16:55,636 INFO L226 Difference]: Without dead ends: 112894 [2022-11-18 20:16:55,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:16:55,677 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 708 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2326 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 2326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:55,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 131 Invalid, 2735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 2326 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-18 20:16:55,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112894 states. [2022-11-18 20:16:57,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112894 to 100942. [2022-11-18 20:16:57,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100942 states, 100941 states have (on average 1.0596883327884605) internal successors, (106966), 100941 states have internal predecessors, (106966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:57,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100942 states to 100942 states and 106966 transitions. [2022-11-18 20:16:57,694 INFO L78 Accepts]: Start accepts. Automaton has 100942 states and 106966 transitions. Word has length 752 [2022-11-18 20:16:57,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:57,694 INFO L495 AbstractCegarLoop]: Abstraction has 100942 states and 106966 transitions. [2022-11-18 20:16:57,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:57,695 INFO L276 IsEmpty]: Start isEmpty. Operand 100942 states and 106966 transitions. [2022-11-18 20:16:57,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 916 [2022-11-18 20:16:57,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:57,730 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:57,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:16:57,730 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:57,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:57,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1977068654, now seen corresponding path program 1 times [2022-11-18 20:16:57,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:57,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183485570] [2022-11-18 20:16:57,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:57,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 1076 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-11-18 20:16:58,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:58,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183485570] [2022-11-18 20:16:58,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183485570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:58,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:58,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:16:58,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650717533] [2022-11-18 20:16:58,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:58,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:16:58,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:58,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:16:58,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:16:58,839 INFO L87 Difference]: Start difference. First operand 100942 states and 106966 transitions. Second operand has 4 states, 4 states have (on average 162.5) internal successors, (650), 4 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:02,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:02,868 INFO L93 Difference]: Finished difference Result 208274 states and 220580 transitions. [2022-11-18 20:17:02,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:17:02,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 162.5) internal successors, (650), 4 states have internal predecessors, (650), 0 states have call successors, (0), 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 915 [2022-11-18 20:17:02,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:02,980 INFO L225 Difference]: With dead ends: 208274 [2022-11-18 20:17:02,980 INFO L226 Difference]: Without dead ends: 107334 [2022-11-18 20:17:03,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:17:03,007 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 794 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 2417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:03,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 247 Invalid, 2417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-18 20:17:03,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107334 states. [2022-11-18 20:17:04,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107334 to 96676. [2022-11-18 20:17:04,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96676 states, 96675 states have (on average 1.0588880268942333) internal successors, (102368), 96675 states have internal predecessors, (102368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:04,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96676 states to 96676 states and 102368 transitions. [2022-11-18 20:17:04,526 INFO L78 Accepts]: Start accepts. Automaton has 96676 states and 102368 transitions. Word has length 915 [2022-11-18 20:17:04,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:04,526 INFO L495 AbstractCegarLoop]: Abstraction has 96676 states and 102368 transitions. [2022-11-18 20:17:04,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.5) internal successors, (650), 4 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:04,527 INFO L276 IsEmpty]: Start isEmpty. Operand 96676 states and 102368 transitions. [2022-11-18 20:17:04,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2022-11-18 20:17:04,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:04,575 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:04,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:17:04,575 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:04,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:04,576 INFO L85 PathProgramCache]: Analyzing trace with hash -110986645, now seen corresponding path program 1 times [2022-11-18 20:17:04,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:04,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670077178] [2022-11-18 20:17:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:04,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:05,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 1088 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-11-18 20:17:05,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:05,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670077178] [2022-11-18 20:17:05,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670077178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:05,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:05,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:17:05,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121600659] [2022-11-18 20:17:05,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:05,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:17:05,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:05,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:17:05,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:17:05,660 INFO L87 Difference]: Start difference. First operand 96676 states and 102368 transitions. Second operand has 4 states, 4 states have (on average 162.5) internal successors, (650), 4 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:09,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:09,456 INFO L93 Difference]: Finished difference Result 198897 states and 210472 transitions. [2022-11-18 20:17:09,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:17:09,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 162.5) internal successors, (650), 4 states have internal predecessors, (650), 0 states have call successors, (0), 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 921 [2022-11-18 20:17:09,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:09,562 INFO L225 Difference]: With dead ends: 198897 [2022-11-18 20:17:09,563 INFO L226 Difference]: Without dead ends: 102223 [2022-11-18 20:17:09,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:17:09,598 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 776 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 2176 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 2299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:09,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 697 Invalid, 2299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2176 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-18 20:17:09,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102223 states. [2022-11-18 20:17:10,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102223 to 97101. [2022-11-18 20:17:10,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97101 states, 97100 states have (on average 1.0588053553038106) internal successors, (102810), 97100 states have internal predecessors, (102810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:10,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97101 states to 97101 states and 102810 transitions. [2022-11-18 20:17:10,885 INFO L78 Accepts]: Start accepts. Automaton has 97101 states and 102810 transitions. Word has length 921 [2022-11-18 20:17:10,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:10,885 INFO L495 AbstractCegarLoop]: Abstraction has 97101 states and 102810 transitions. [2022-11-18 20:17:10,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.5) internal successors, (650), 4 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:17:10,885 INFO L276 IsEmpty]: Start isEmpty. Operand 97101 states and 102810 transitions. [2022-11-18 20:17:10,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2022-11-18 20:17:10,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:10,921 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:10,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:17:10,922 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:10,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:10,923 INFO L85 PathProgramCache]: Analyzing trace with hash -540172123, now seen corresponding path program 1 times [2022-11-18 20:17:10,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:10,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234928038] [2022-11-18 20:17:10,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:10,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms