./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label32.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label32.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN --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 758b6bdd5f0153469513ef6931f2486fab3d5fd3aa9f01cac0e5fdb67f3e5b48 --- 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-6b4ec56 [2022-11-20 10:36:08,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:36:08,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:36:08,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:36:08,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:36:08,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:36:08,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:36:08,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:36:08,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:36:08,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:36:08,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:36:08,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:36:08,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:36:08,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:36:08,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:36:08,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:36:08,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:36:08,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:36:08,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:36:08,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:36:08,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:36:08,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:36:08,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:36:08,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:36:08,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:36:08,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:36:08,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:36:08,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:36:08,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:36:08,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:36:08,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:36:08,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:36:08,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:36:08,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:36:08,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:36:08,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:36:08,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:36:08,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:36:08,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:36:08,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:36:08,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:36:08,851 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:36:08,889 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:36:08,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:36:08,890 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:36:08,891 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:36:08,891 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:36:08,892 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:36:08,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:36:08,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:36:08,893 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:36:08,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:36:08,894 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:36:08,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:36:08,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:36:08,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:36:08,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:36:08,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:36:08,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:36:08,895 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:36:08,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:36:08,896 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:36:08,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:36:08,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:36:08,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:36:08,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:36:08,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:36:08,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:36:08,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:36:08,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:36:08,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:36:08,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:36:08,898 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:36:08,899 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:36:08,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:36:08,899 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_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 758b6bdd5f0153469513ef6931f2486fab3d5fd3aa9f01cac0e5fdb67f3e5b48 [2022-11-20 10:36:09,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:36:09,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:36:09,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:36:09,182 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:36:09,182 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:36:09,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/eca-rers2012/Problem17_label32.c [2022-11-20 10:36:12,306 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:36:12,773 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:36:12,773 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/sv-benchmarks/c/eca-rers2012/Problem17_label32.c [2022-11-20 10:36:12,795 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/data/a36c1405d/fa7377b1357342bb83ccef74fb42020f/FLAG72692fb22 [2022-11-20 10:36:12,814 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/data/a36c1405d/fa7377b1357342bb83ccef74fb42020f [2022-11-20 10:36:12,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:36:12,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:36:12,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:36:12,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:36:12,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:36:12,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:36:12" (1/1) ... [2022-11-20 10:36:12,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ae6aeab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:12, skipping insertion in model container [2022-11-20 10:36:12,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:36:12" (1/1) ... [2022-11-20 10:36:12,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:36:12,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:36:13,174 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/sv-benchmarks/c/eca-rers2012/Problem17_label32.c[7145,7158] [2022-11-20 10:36:13,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:36:14,000 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:36:14,035 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/sv-benchmarks/c/eca-rers2012/Problem17_label32.c[7145,7158] [2022-11-20 10:36:14,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:36:14,428 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:36:14,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:14 WrapperNode [2022-11-20 10:36:14,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:36:14,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:36:14,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:36:14,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:36:14,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:14" (1/1) ... [2022-11-20 10:36:14,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:14" (1/1) ... [2022-11-20 10:36:14,803 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-11-20 10:36:14,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:36:14,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:36:14,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:36:14,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:36:14,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:14" (1/1) ... [2022-11-20 10:36:14,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:14" (1/1) ... [2022-11-20 10:36:14,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:14" (1/1) ... [2022-11-20 10:36:14,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:14" (1/1) ... [2022-11-20 10:36:15,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:14" (1/1) ... [2022-11-20 10:36:15,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:14" (1/1) ... [2022-11-20 10:36:15,107 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:14" (1/1) ... [2022-11-20 10:36:15,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:14" (1/1) ... [2022-11-20 10:36:15,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:36:15,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:36:15,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:36:15,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:36:15,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:14" (1/1) ... [2022-11-20 10:36:15,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:36:15,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:15,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:36:15,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:36:15,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:36:15,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:36:15,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:36:15,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:36:15,332 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:36:15,335 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:36:19,667 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:36:19,686 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:36:19,688 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 10:36:19,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:36:19 BoogieIcfgContainer [2022-11-20 10:36:19,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:36:19,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:36:19,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:36:19,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:36:19,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:36:12" (1/3) ... [2022-11-20 10:36:19,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8aef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:36:19, skipping insertion in model container [2022-11-20 10:36:19,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:14" (2/3) ... [2022-11-20 10:36:19,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8aef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:36:19, skipping insertion in model container [2022-11-20 10:36:19,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:36:19" (3/3) ... [2022-11-20 10:36:19,705 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label32.c [2022-11-20 10:36:19,725 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:36:19,725 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:36:19,820 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:36:19,828 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;@20917bf3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:36:19,829 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:36:19,836 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) [2022-11-20 10:36:19,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 10:36:19,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:19,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:19,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:19,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:19,851 INFO L85 PathProgramCache]: Analyzing trace with hash 563919826, now seen corresponding path program 1 times [2022-11-20 10:36:19,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:19,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056956196] [2022-11-20 10:36:19,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:19,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:20,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:20,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:20,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056956196] [2022-11-20 10:36:20,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056956196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:20,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:20,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:36:20,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847534579] [2022-11-20 10:36:20,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:20,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:36:20,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:20,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:36:20,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:20,284 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 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:24,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:24,067 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2022-11-20 10:36:24,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:36:24,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-11-20 10:36:24,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:24,087 INFO L225 Difference]: With dead ends: 1644 [2022-11-20 10:36:24,087 INFO L226 Difference]: Without dead ends: 977 [2022-11-20 10:36:24,093 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 [2022-11-20 10:36:24,099 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 440 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:24,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-20 10:36:24,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-11-20 10:36:24,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2022-11-20 10:36:24,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:24,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2022-11-20 10:36:24,196 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 48 [2022-11-20 10:36:24,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:24,197 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2022-11-20 10:36:24,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:24,197 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2022-11-20 10:36:24,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-20 10:36:24,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:24,201 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, 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] [2022-11-20 10:36:24,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:36:24,202 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:24,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:24,202 INFO L85 PathProgramCache]: Analyzing trace with hash 163753450, now seen corresponding path program 1 times [2022-11-20 10:36:24,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:24,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668937322] [2022-11-20 10:36:24,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:24,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:24,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:24,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668937322] [2022-11-20 10:36:24,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668937322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:24,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:24,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:36:24,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283445279] [2022-11-20 10:36:24,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:24,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:36:24,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:24,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:36:24,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:24,557 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:28,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:28,033 INFO L93 Difference]: Finished difference Result 2813 states and 4381 transitions. [2022-11-20 10:36:28,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:36:28,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-20 10:36:28,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:28,041 INFO L225 Difference]: With dead ends: 2813 [2022-11-20 10:36:28,041 INFO L226 Difference]: Without dead ends: 1844 [2022-11-20 10:36:28,043 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 [2022-11-20 10:36:28,045 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:28,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 579 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-20 10:36:28,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-11-20 10:36:28,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1841. [2022-11-20 10:36:28,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.35) internal successors, (2484), 1840 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:28,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2484 transitions. [2022-11-20 10:36:28,116 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2484 transitions. Word has length 115 [2022-11-20 10:36:28,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:28,120 INFO L495 AbstractCegarLoop]: Abstraction has 1841 states and 2484 transitions. [2022-11-20 10:36:28,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:28,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2484 transitions. [2022-11-20 10:36:28,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 10:36:28,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:28,130 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, 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] [2022-11-20 10:36:28,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:36:28,134 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:28,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:28,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1580886146, now seen corresponding path program 1 times [2022-11-20 10:36:28,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:28,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085453585] [2022-11-20 10:36:28,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:28,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:28,604 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:28,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:28,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085453585] [2022-11-20 10:36:28,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085453585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:28,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:28,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:36:28,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026588106] [2022-11-20 10:36:28,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:28,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:36:28,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:28,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:36:28,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:36:28,610 INFO L87 Difference]: Start difference. First operand 1841 states and 2484 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:34,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:34,217 INFO L93 Difference]: Finished difference Result 6767 states and 9259 transitions. [2022-11-20 10:36:34,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:36:34,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2022-11-20 10:36:34,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:34,235 INFO L225 Difference]: With dead ends: 6767 [2022-11-20 10:36:34,236 INFO L226 Difference]: Without dead ends: 4928 [2022-11-20 10:36:34,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:36:34,247 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 867 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2790 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 3384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 2790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:34,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 328 Invalid, 3384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 2790 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-20 10:36:34,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4928 states. [2022-11-20 10:36:34,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4928 to 4875. [2022-11-20 10:36:34,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4875 states, 4874 states have (on average 1.2866228970045137) internal successors, (6271), 4874 states have internal predecessors, (6271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:34,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4875 states to 4875 states and 6271 transitions. [2022-11-20 10:36:34,359 INFO L78 Accepts]: Start accepts. Automaton has 4875 states and 6271 transitions. Word has length 118 [2022-11-20 10:36:34,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:34,361 INFO L495 AbstractCegarLoop]: Abstraction has 4875 states and 6271 transitions. [2022-11-20 10:36:34,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:34,362 INFO L276 IsEmpty]: Start isEmpty. Operand 4875 states and 6271 transitions. [2022-11-20 10:36:34,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-20 10:36:34,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:34,373 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, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:34,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:36:34,373 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:34,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:34,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1664170439, now seen corresponding path program 1 times [2022-11-20 10:36:34,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:34,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43871032] [2022-11-20 10:36:34,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:34,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:34,683 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-20 10:36:34,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:34,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43871032] [2022-11-20 10:36:34,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43871032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:34,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:34,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:36:34,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558988541] [2022-11-20 10:36:34,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:34,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:36:34,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:34,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:36:34,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:34,688 INFO L87 Difference]: Start difference. First operand 4875 states and 6271 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:37,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:37,517 INFO L93 Difference]: Finished difference Result 14436 states and 18544 transitions. [2022-11-20 10:36:37,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:36:37,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 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 187 [2022-11-20 10:36:37,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:37,544 INFO L225 Difference]: With dead ends: 14436 [2022-11-20 10:36:37,544 INFO L226 Difference]: Without dead ends: 8277 [2022-11-20 10:36:37,551 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 [2022-11-20 10:36:37,552 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 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 [2022-11-20 10:36:37,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 10:36:37,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8277 states. [2022-11-20 10:36:37,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8277 to 6576. [2022-11-20 10:36:37,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6576 states, 6575 states have (on average 1.1793155893536122) internal successors, (7754), 6575 states have internal predecessors, (7754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:37,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6576 states to 6576 states and 7754 transitions. [2022-11-20 10:36:37,702 INFO L78 Accepts]: Start accepts. Automaton has 6576 states and 7754 transitions. Word has length 187 [2022-11-20 10:36:37,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:37,703 INFO L495 AbstractCegarLoop]: Abstraction has 6576 states and 7754 transitions. [2022-11-20 10:36:37,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:37,704 INFO L276 IsEmpty]: Start isEmpty. Operand 6576 states and 7754 transitions. [2022-11-20 10:36:37,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-20 10:36:37,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:37,707 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:37,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:36:37,707 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:37,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:37,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1142859275, now seen corresponding path program 1 times [2022-11-20 10:36:37,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:37,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770913969] [2022-11-20 10:36:37,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:37,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:38,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:38,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770913969] [2022-11-20 10:36:38,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770913969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:38,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:38,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:36:38,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242061022] [2022-11-20 10:36:38,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:38,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:36:38,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:38,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:36:38,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:38,056 INFO L87 Difference]: Start difference. First operand 6576 states and 7754 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:40,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:40,677 INFO L93 Difference]: Finished difference Result 16560 states and 19931 transitions. [2022-11-20 10:36:40,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:36:40,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2022-11-20 10:36:40,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:40,706 INFO L225 Difference]: With dead ends: 16560 [2022-11-20 10:36:40,706 INFO L226 Difference]: Without dead ends: 9986 [2022-11-20 10:36:40,713 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 [2022-11-20 10:36:40,714 INFO L413 NwaCegarLoop]: 743 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:40,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 801 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 10:36:40,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9986 states. [2022-11-20 10:36:40,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9986 to 9986. [2022-11-20 10:36:40,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9986 states, 9985 states have (on average 1.1696544817225838) internal successors, (11679), 9985 states have internal predecessors, (11679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:40,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9986 states to 9986 states and 11679 transitions. [2022-11-20 10:36:40,984 INFO L78 Accepts]: Start accepts. Automaton has 9986 states and 11679 transitions. Word has length 200 [2022-11-20 10:36:40,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:40,986 INFO L495 AbstractCegarLoop]: Abstraction has 9986 states and 11679 transitions. [2022-11-20 10:36:40,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:40,990 INFO L276 IsEmpty]: Start isEmpty. Operand 9986 states and 11679 transitions. [2022-11-20 10:36:40,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-20 10:36:40,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:40,993 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:40,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:36:40,993 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:40,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:40,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1124334992, now seen corresponding path program 1 times [2022-11-20 10:36:40,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:40,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984769783] [2022-11-20 10:36:40,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:40,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:41,197 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-20 10:36:41,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:41,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984769783] [2022-11-20 10:36:41,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984769783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:41,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:41,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:36:41,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20462713] [2022-11-20 10:36:41,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:41,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:36:41,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:41,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:36:41,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:41,200 INFO L87 Difference]: Start difference. First operand 9986 states and 11679 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:44,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:44,283 INFO L93 Difference]: Finished difference Result 25067 states and 29587 transitions. [2022-11-20 10:36:44,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:36:44,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 202 [2022-11-20 10:36:44,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:44,318 INFO L225 Difference]: With dead ends: 25067 [2022-11-20 10:36:44,318 INFO L226 Difference]: Without dead ends: 15083 [2022-11-20 10:36:44,327 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 [2022-11-20 10:36:44,328 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 406 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:44,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 486 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 10:36:44,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15083 states. [2022-11-20 10:36:44,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15083 to 10384. [2022-11-20 10:36:44,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10384 states, 10383 states have (on average 1.1651738418568813) internal successors, (12098), 10383 states have internal predecessors, (12098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:44,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10384 states to 10384 states and 12098 transitions. [2022-11-20 10:36:44,528 INFO L78 Accepts]: Start accepts. Automaton has 10384 states and 12098 transitions. Word has length 202 [2022-11-20 10:36:44,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:44,529 INFO L495 AbstractCegarLoop]: Abstraction has 10384 states and 12098 transitions. [2022-11-20 10:36:44,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:44,530 INFO L276 IsEmpty]: Start isEmpty. Operand 10384 states and 12098 transitions. [2022-11-20 10:36:44,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-20 10:36:44,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:44,533 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, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:44,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:36:44,534 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:44,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:44,534 INFO L85 PathProgramCache]: Analyzing trace with hash 97600964, now seen corresponding path program 1 times [2022-11-20 10:36:44,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:44,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490842779] [2022-11-20 10:36:44,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:44,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:44,779 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-20 10:36:44,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:44,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490842779] [2022-11-20 10:36:44,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490842779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:44,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:44,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:36:44,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047486314] [2022-11-20 10:36:44,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:44,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:36:44,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:44,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:36:44,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:44,783 INFO L87 Difference]: Start difference. First operand 10384 states and 12098 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:47,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:47,912 INFO L93 Difference]: Finished difference Result 25874 states and 30417 transitions. [2022-11-20 10:36:47,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:36:47,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 215 [2022-11-20 10:36:47,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:47,942 INFO L225 Difference]: With dead ends: 25874 [2022-11-20 10:36:47,943 INFO L226 Difference]: Without dead ends: 15492 [2022-11-20 10:36:47,954 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 [2022-11-20 10:36:47,955 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 430 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:47,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 448 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 10:36:47,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15492 states. [2022-11-20 10:36:48,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15492 to 13778. [2022-11-20 10:36:48,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13778 states, 13777 states have (on average 1.166509399724178) internal successors, (16071), 13777 states have internal predecessors, (16071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:48,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13778 states to 13778 states and 16071 transitions. [2022-11-20 10:36:48,186 INFO L78 Accepts]: Start accepts. Automaton has 13778 states and 16071 transitions. Word has length 215 [2022-11-20 10:36:48,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:48,188 INFO L495 AbstractCegarLoop]: Abstraction has 13778 states and 16071 transitions. [2022-11-20 10:36:48,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:48,188 INFO L276 IsEmpty]: Start isEmpty. Operand 13778 states and 16071 transitions. [2022-11-20 10:36:48,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-11-20 10:36:48,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:48,193 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:48,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:36:48,194 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:48,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:48,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1461457338, now seen corresponding path program 1 times [2022-11-20 10:36:48,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:48,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952758104] [2022-11-20 10:36:48,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:48,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-20 10:36:48,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:48,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952758104] [2022-11-20 10:36:48,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952758104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:48,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:48,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:36:48,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166536373] [2022-11-20 10:36:48,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:48,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:36:48,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:48,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:36:48,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:48,498 INFO L87 Difference]: Start difference. First operand 13778 states and 16071 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:51,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:51,628 INFO L93 Difference]: Finished difference Result 32234 states and 37932 transitions. [2022-11-20 10:36:51,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:36:51,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 247 [2022-11-20 10:36:51,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:51,662 INFO L225 Difference]: With dead ends: 32234 [2022-11-20 10:36:51,662 INFO L226 Difference]: Without dead ends: 18458 [2022-11-20 10:36:51,675 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 [2022-11-20 10:36:51,676 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 444 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:51,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 416 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 10:36:51,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18458 states. [2022-11-20 10:36:51,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18458 to 17176. [2022-11-20 10:36:51,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17176 states, 17175 states have (on average 1.1833478893740903) internal successors, (20324), 17175 states have internal predecessors, (20324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:51,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17176 states to 17176 states and 20324 transitions. [2022-11-20 10:36:51,977 INFO L78 Accepts]: Start accepts. Automaton has 17176 states and 20324 transitions. Word has length 247 [2022-11-20 10:36:51,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:51,978 INFO L495 AbstractCegarLoop]: Abstraction has 17176 states and 20324 transitions. [2022-11-20 10:36:51,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:51,979 INFO L276 IsEmpty]: Start isEmpty. Operand 17176 states and 20324 transitions. [2022-11-20 10:36:51,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-11-20 10:36:51,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:51,984 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:51,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:36:51,984 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:51,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:51,985 INFO L85 PathProgramCache]: Analyzing trace with hash 492691904, now seen corresponding path program 1 times [2022-11-20 10:36:51,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:51,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334051793] [2022-11-20 10:36:51,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:51,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:52,395 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:52,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:52,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334051793] [2022-11-20 10:36:52,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334051793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:52,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:52,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:36:52,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131730928] [2022-11-20 10:36:52,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:52,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:36:52,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:52,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:36:52,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:52,398 INFO L87 Difference]: Start difference. First operand 17176 states and 20324 transitions. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:55,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:55,332 INFO L93 Difference]: Finished difference Result 39057 states and 46415 transitions. [2022-11-20 10:36:55,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:36:55,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 264 [2022-11-20 10:36:55,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:55,371 INFO L225 Difference]: With dead ends: 39057 [2022-11-20 10:36:55,371 INFO L226 Difference]: Without dead ends: 21458 [2022-11-20 10:36:55,386 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 [2022-11-20 10:36:55,389 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 356 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:55,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 864 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 10:36:55,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21458 states. [2022-11-20 10:36:55,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21458 to 21025. [2022-11-20 10:36:55,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21025 states, 21024 states have (on average 1.1667142313546424) internal successors, (24529), 21024 states have internal predecessors, (24529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:55,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21025 states to 21025 states and 24529 transitions. [2022-11-20 10:36:55,661 INFO L78 Accepts]: Start accepts. Automaton has 21025 states and 24529 transitions. Word has length 264 [2022-11-20 10:36:55,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:55,661 INFO L495 AbstractCegarLoop]: Abstraction has 21025 states and 24529 transitions. [2022-11-20 10:36:55,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:55,662 INFO L276 IsEmpty]: Start isEmpty. Operand 21025 states and 24529 transitions. [2022-11-20 10:36:55,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-20 10:36:55,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:55,667 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:55,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:36:55,667 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:36:55,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:55,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1444872292, now seen corresponding path program 1 times [2022-11-20 10:36:55,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:55,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570440826] [2022-11-20 10:36:55,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:55,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 230 proven. 70 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 10:36:56,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:56,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570440826] [2022-11-20 10:36:56,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570440826] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:56,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894493790] [2022-11-20 10:36:56,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:56,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:56,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:56,188 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:56,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:36:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:56,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:36:56,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:56,992 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 230 proven. 70 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 10:36:56,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:57,342 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 10:36:57,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894493790] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:57,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:36:57,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-11-20 10:36:57,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746374519] [2022-11-20 10:36:57,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:57,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:36:57,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:57,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:36:57,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:36:57,345 INFO L87 Difference]: Start difference. First operand 21025 states and 24529 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:02,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:02,723 INFO L93 Difference]: Finished difference Result 59100 states and 69388 transitions. [2022-11-20 10:37:02,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:37:02,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 272 [2022-11-20 10:37:02,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:02,776 INFO L225 Difference]: With dead ends: 59100 [2022-11-20 10:37:02,776 INFO L226 Difference]: Without dead ends: 37213 [2022-11-20 10:37:02,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 539 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:37:02,792 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 1061 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 3480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:02,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 143 Invalid, 3480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1215 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 10:37:02,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37213 states. [2022-11-20 10:37:03,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37213 to 35506. [2022-11-20 10:37:03,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35506 states, 35505 states have (on average 1.1591043514997887) internal successors, (41154), 35505 states have internal predecessors, (41154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:03,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35506 states to 35506 states and 41154 transitions. [2022-11-20 10:37:03,370 INFO L78 Accepts]: Start accepts. Automaton has 35506 states and 41154 transitions. Word has length 272 [2022-11-20 10:37:03,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:03,371 INFO L495 AbstractCegarLoop]: Abstraction has 35506 states and 41154 transitions. [2022-11-20 10:37:03,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:03,371 INFO L276 IsEmpty]: Start isEmpty. Operand 35506 states and 41154 transitions. [2022-11-20 10:37:03,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-11-20 10:37:03,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:03,377 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, 4, 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] [2022-11-20 10:37:03,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:03,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 10:37:03,583 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:03,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:03,584 INFO L85 PathProgramCache]: Analyzing trace with hash 2116849427, now seen corresponding path program 1 times [2022-11-20 10:37:03,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:03,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107135779] [2022-11-20 10:37:03,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:03,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-20 10:37:03,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:03,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107135779] [2022-11-20 10:37:03,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107135779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:03,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:03,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:37:03,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410002694] [2022-11-20 10:37:03,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:03,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:03,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:03,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:03,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:03,837 INFO L87 Difference]: Start difference. First operand 35506 states and 41154 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:06,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:06,598 INFO L93 Difference]: Finished difference Result 78654 states and 91329 transitions. [2022-11-20 10:37:06,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:06,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 280 [2022-11-20 10:37:06,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:06,656 INFO L225 Difference]: With dead ends: 78654 [2022-11-20 10:37:06,657 INFO L226 Difference]: Without dead ends: 42723 [2022-11-20 10:37:06,677 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 [2022-11-20 10:37:06,678 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 380 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:06,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 850 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 10:37:06,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42723 states. [2022-11-20 10:37:07,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42723 to 42723. [2022-11-20 10:37:07,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42723 states, 42722 states have (on average 1.1170825335892514) internal successors, (47724), 42722 states have internal predecessors, (47724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:07,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42723 states to 42723 states and 47724 transitions. [2022-11-20 10:37:07,310 INFO L78 Accepts]: Start accepts. Automaton has 42723 states and 47724 transitions. Word has length 280 [2022-11-20 10:37:07,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:07,311 INFO L495 AbstractCegarLoop]: Abstraction has 42723 states and 47724 transitions. [2022-11-20 10:37:07,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:07,311 INFO L276 IsEmpty]: Start isEmpty. Operand 42723 states and 47724 transitions. [2022-11-20 10:37:07,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-20 10:37:07,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:07,316 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, 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, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:07,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:37:07,317 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:07,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:07,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1578321914, now seen corresponding path program 1 times [2022-11-20 10:37:07,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:07,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347269415] [2022-11-20 10:37:07,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:07,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 371 proven. 73 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-20 10:37:08,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:08,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347269415] [2022-11-20 10:37:08,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347269415] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:37:08,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570497491] [2022-11-20 10:37:08,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:08,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:08,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:08,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:37:08,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:37:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:08,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:37:08,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:08,819 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 371 proven. 73 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-20 10:37:08,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:09,137 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 444 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-20 10:37:09,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570497491] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:37:09,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:37:09,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-11-20 10:37:09,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694308046] [2022-11-20 10:37:09,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:09,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:37:09,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:09,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:37:09,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:37:09,140 INFO L87 Difference]: Start difference. First operand 42723 states and 47724 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:13,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:13,544 INFO L93 Difference]: Finished difference Result 101643 states and 113664 transitions. [2022-11-20 10:37:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:37:13,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 346 [2022-11-20 10:37:13,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:13,617 INFO L225 Difference]: With dead ends: 101643 [2022-11-20 10:37:13,618 INFO L226 Difference]: Without dead ends: 58493 [2022-11-20 10:37:13,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 687 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:37:13,642 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 841 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 2824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:13,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 189 Invalid, 2824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 2332 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-20 10:37:13,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58493 states. [2022-11-20 10:37:14,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58493 to 55940. [2022-11-20 10:37:14,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55940 states, 55939 states have (on average 1.1210604408373406) internal successors, (62711), 55939 states have internal predecessors, (62711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:14,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55940 states to 55940 states and 62711 transitions. [2022-11-20 10:37:14,802 INFO L78 Accepts]: Start accepts. Automaton has 55940 states and 62711 transitions. Word has length 346 [2022-11-20 10:37:14,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:14,803 INFO L495 AbstractCegarLoop]: Abstraction has 55940 states and 62711 transitions. [2022-11-20 10:37:14,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:14,804 INFO L276 IsEmpty]: Start isEmpty. Operand 55940 states and 62711 transitions. [2022-11-20 10:37:14,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2022-11-20 10:37:14,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:14,818 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:14,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:15,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 10:37:15,025 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:15,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:15,025 INFO L85 PathProgramCache]: Analyzing trace with hash -272694228, now seen corresponding path program 1 times [2022-11-20 10:37:15,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:15,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005918711] [2022-11-20 10:37:15,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:15,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 444 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-11-20 10:37:15,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:15,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005918711] [2022-11-20 10:37:15,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005918711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:15,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:15,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:37:15,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281388977] [2022-11-20 10:37:15,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:15,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:15,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:15,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:15,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:15,624 INFO L87 Difference]: Start difference. First operand 55940 states and 62711 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:18,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:18,335 INFO L93 Difference]: Finished difference Result 121241 states and 135987 transitions. [2022-11-20 10:37:18,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:18,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 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 443 [2022-11-20 10:37:18,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:18,407 INFO L225 Difference]: With dead ends: 121241 [2022-11-20 10:37:18,407 INFO L226 Difference]: Without dead ends: 64878 [2022-11-20 10:37:18,437 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 [2022-11-20 10:37:18,438 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 339 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:18,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 774 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 10:37:18,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64878 states. [2022-11-20 10:37:19,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64878 to 53350. [2022-11-20 10:37:19,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53350 states, 53349 states have (on average 1.1076871169094078) internal successors, (59094), 53349 states have internal predecessors, (59094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:19,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53350 states to 53350 states and 59094 transitions. [2022-11-20 10:37:19,578 INFO L78 Accepts]: Start accepts. Automaton has 53350 states and 59094 transitions. Word has length 443 [2022-11-20 10:37:19,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:19,580 INFO L495 AbstractCegarLoop]: Abstraction has 53350 states and 59094 transitions. [2022-11-20 10:37:19,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:19,580 INFO L276 IsEmpty]: Start isEmpty. Operand 53350 states and 59094 transitions. [2022-11-20 10:37:19,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-11-20 10:37:19,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:19,611 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, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:19,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:37:19,612 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:19,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:19,612 INFO L85 PathProgramCache]: Analyzing trace with hash -673343967, now seen corresponding path program 1 times [2022-11-20 10:37:19,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:19,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843440048] [2022-11-20 10:37:19,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:19,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 563 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-20 10:37:20,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:20,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843440048] [2022-11-20 10:37:20,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843440048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:20,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:20,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:37:20,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576399449] [2022-11-20 10:37:20,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:20,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:20,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:20,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:20,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:20,253 INFO L87 Difference]: Start difference. First operand 53350 states and 59094 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:23,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:23,799 INFO L93 Difference]: Finished difference Result 119901 states and 132834 transitions. [2022-11-20 10:37:23,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:23,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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 444 [2022-11-20 10:37:23,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:23,856 INFO L225 Difference]: With dead ends: 119901 [2022-11-20 10:37:23,857 INFO L226 Difference]: Without dead ends: 63990 [2022-11-20 10:37:23,876 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 [2022-11-20 10:37:23,876 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 437 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:23,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 659 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 10:37:23,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63990 states. [2022-11-20 10:37:24,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63990 to 61851. [2022-11-20 10:37:24,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61851 states, 61850 states have (on average 1.0961196443007275) internal successors, (67795), 61850 states have internal predecessors, (67795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:24,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61851 states to 61851 states and 67795 transitions. [2022-11-20 10:37:24,676 INFO L78 Accepts]: Start accepts. Automaton has 61851 states and 67795 transitions. Word has length 444 [2022-11-20 10:37:24,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:24,676 INFO L495 AbstractCegarLoop]: Abstraction has 61851 states and 67795 transitions. [2022-11-20 10:37:24,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:24,677 INFO L276 IsEmpty]: Start isEmpty. Operand 61851 states and 67795 transitions. [2022-11-20 10:37:24,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-11-20 10:37:24,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:24,688 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:24,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:37:24,689 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:24,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:24,689 INFO L85 PathProgramCache]: Analyzing trace with hash 833395288, now seen corresponding path program 1 times [2022-11-20 10:37:24,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:24,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798839622] [2022-11-20 10:37:24,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:24,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:25,712 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 10:37:25,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:25,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798839622] [2022-11-20 10:37:25,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798839622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:25,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:25,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:37:25,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595449103] [2022-11-20 10:37:25,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:25,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:37:25,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:25,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:37:25,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:37:25,716 INFO L87 Difference]: Start difference. First operand 61851 states and 67795 transitions. Second operand has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:30,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:30,027 INFO L93 Difference]: Finished difference Result 145471 states and 159571 transitions. [2022-11-20 10:37:30,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:37:30,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 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 448 [2022-11-20 10:37:30,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:30,113 INFO L225 Difference]: With dead ends: 145471 [2022-11-20 10:37:30,113 INFO L226 Difference]: Without dead ends: 83622 [2022-11-20 10:37:30,142 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 [2022-11-20 10:37:30,143 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 817 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 2770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:30,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 220 Invalid, 2770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-20 10:37:30,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83622 states. [2022-11-20 10:37:31,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83622 to 78925. [2022-11-20 10:37:31,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78925 states, 78924 states have (on average 1.097967665095535) internal successors, (86656), 78924 states have internal predecessors, (86656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:31,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78925 states to 78925 states and 86656 transitions. [2022-11-20 10:37:31,188 INFO L78 Accepts]: Start accepts. Automaton has 78925 states and 86656 transitions. Word has length 448 [2022-11-20 10:37:31,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:31,189 INFO L495 AbstractCegarLoop]: Abstraction has 78925 states and 86656 transitions. [2022-11-20 10:37:31,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:31,189 INFO L276 IsEmpty]: Start isEmpty. Operand 78925 states and 86656 transitions. [2022-11-20 10:37:31,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2022-11-20 10:37:31,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:31,197 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, 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, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:37:31,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:37:31,198 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:31,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:31,198 INFO L85 PathProgramCache]: Analyzing trace with hash -466462954, now seen corresponding path program 1 times [2022-11-20 10:37:31,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:31,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36439253] [2022-11-20 10:37:31,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:31,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:31,902 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 602 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-11-20 10:37:31,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:31,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36439253] [2022-11-20 10:37:31,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36439253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:31,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:31,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:37:31,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105416121] [2022-11-20 10:37:31,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:31,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:31,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:31,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:31,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:31,905 INFO L87 Difference]: Start difference. First operand 78925 states and 86656 transitions. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:34,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:34,925 INFO L93 Difference]: Finished difference Result 167641 states and 184227 transitions. [2022-11-20 10:37:34,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:34,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 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 467 [2022-11-20 10:37:34,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:35,015 INFO L225 Difference]: With dead ends: 167641 [2022-11-20 10:37:35,015 INFO L226 Difference]: Without dead ends: 88718 [2022-11-20 10:37:35,050 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 [2022-11-20 10:37:35,051 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 386 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:35,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 326 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 10:37:35,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88718 states. [2022-11-20 10:37:36,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88718 to 88286. [2022-11-20 10:37:36,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88286 states, 88285 states have (on average 1.0953389590530667) internal successors, (96702), 88285 states have internal predecessors, (96702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:36,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88286 states to 88286 states and 96702 transitions. [2022-11-20 10:37:36,394 INFO L78 Accepts]: Start accepts. Automaton has 88286 states and 96702 transitions. Word has length 467 [2022-11-20 10:37:36,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:36,395 INFO L495 AbstractCegarLoop]: Abstraction has 88286 states and 96702 transitions. [2022-11-20 10:37:36,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:36,395 INFO L276 IsEmpty]: Start isEmpty. Operand 88286 states and 96702 transitions. [2022-11-20 10:37:36,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2022-11-20 10:37:36,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:36,405 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:36,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:37:36,406 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:36,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:36,406 INFO L85 PathProgramCache]: Analyzing trace with hash 811412228, now seen corresponding path program 1 times [2022-11-20 10:37:36,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:36,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792864757] [2022-11-20 10:37:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:36,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:36,781 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2022-11-20 10:37:36,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:36,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792864757] [2022-11-20 10:37:36,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792864757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:36,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:36,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:37:36,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707587217] [2022-11-20 10:37:36,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:36,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:36,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:36,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:36,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:36,784 INFO L87 Difference]: Start difference. First operand 88286 states and 96702 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:40,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:40,104 INFO L93 Difference]: Finished difference Result 190190 states and 208577 transitions. [2022-11-20 10:37:40,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:40,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 491 [2022-11-20 10:37:40,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:40,209 INFO L225 Difference]: With dead ends: 190190 [2022-11-20 10:37:40,209 INFO L226 Difference]: Without dead ends: 101906 [2022-11-20 10:37:40,235 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 [2022-11-20 10:37:40,236 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 475 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:40,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 264 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 10:37:40,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101906 states. [2022-11-20 10:37:41,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101906 to 101449. [2022-11-20 10:37:41,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101449 states, 101448 states have (on average 1.0927963094393187) internal successors, (110862), 101448 states have internal predecessors, (110862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:41,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101449 states to 101449 states and 110862 transitions. [2022-11-20 10:37:41,664 INFO L78 Accepts]: Start accepts. Automaton has 101449 states and 110862 transitions. Word has length 491 [2022-11-20 10:37:41,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:41,665 INFO L495 AbstractCegarLoop]: Abstraction has 101449 states and 110862 transitions. [2022-11-20 10:37:41,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:41,665 INFO L276 IsEmpty]: Start isEmpty. Operand 101449 states and 110862 transitions. [2022-11-20 10:37:41,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-11-20 10:37:41,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:41,674 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 10:37:41,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 10:37:41,675 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:41,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:41,675 INFO L85 PathProgramCache]: Analyzing trace with hash -691703023, now seen corresponding path program 1 times [2022-11-20 10:37:41,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:41,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963149696] [2022-11-20 10:37:41,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:41,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-11-20 10:37:42,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:42,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963149696] [2022-11-20 10:37:42,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963149696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:42,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:42,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:37:42,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820429604] [2022-11-20 10:37:42,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:42,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:42,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:42,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:42,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:42,458 INFO L87 Difference]: Start difference. First operand 101449 states and 110862 transitions. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:45,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:45,544 INFO L93 Difference]: Finished difference Result 208447 states and 227581 transitions. [2022-11-20 10:37:45,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:45,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 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 494 [2022-11-20 10:37:45,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:45,639 INFO L225 Difference]: With dead ends: 208447 [2022-11-20 10:37:45,639 INFO L226 Difference]: Without dead ends: 105293 [2022-11-20 10:37:45,668 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 [2022-11-20 10:37:45,668 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 401 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:45,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 807 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 10:37:45,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105293 states. [2022-11-20 10:37:47,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105293 to 102292. [2022-11-20 10:37:47,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102292 states, 102291 states have (on average 1.0912103704138194) internal successors, (111621), 102291 states have internal predecessors, (111621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:47,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102292 states to 102292 states and 111621 transitions. [2022-11-20 10:37:47,615 INFO L78 Accepts]: Start accepts. Automaton has 102292 states and 111621 transitions. Word has length 494 [2022-11-20 10:37:47,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:47,616 INFO L495 AbstractCegarLoop]: Abstraction has 102292 states and 111621 transitions. [2022-11-20 10:37:47,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:47,616 INFO L276 IsEmpty]: Start isEmpty. Operand 102292 states and 111621 transitions. [2022-11-20 10:37:47,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2022-11-20 10:37:47,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:47,629 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:47,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 10:37:47,630 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:47,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:47,634 INFO L85 PathProgramCache]: Analyzing trace with hash -874297013, now seen corresponding path program 1 times [2022-11-20 10:37:47,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:47,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46528418] [2022-11-20 10:37:47,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:47,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 651 proven. 29 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-11-20 10:37:49,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:49,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46528418] [2022-11-20 10:37:49,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46528418] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:37:49,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035390150] [2022-11-20 10:37:49,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:49,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:49,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:49,316 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:37:49,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:37:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:49,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:37:49,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:50,095 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2022-11-20 10:37:50,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:50,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035390150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:50,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:37:50,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-11-20 10:37:50,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177544816] [2022-11-20 10:37:50,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:50,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:50,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:50,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:50,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:37:50,099 INFO L87 Difference]: Start difference. First operand 102292 states and 111621 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:50,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:50,484 INFO L93 Difference]: Finished difference Result 102340 states and 111669 transitions. [2022-11-20 10:37:50,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:50,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 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 532 [2022-11-20 10:37:50,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:50,610 INFO L225 Difference]: With dead ends: 102340 [2022-11-20 10:37:50,610 INFO L226 Difference]: Without dead ends: 102338 [2022-11-20 10:37:50,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:37:50,632 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 737 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:50,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 826 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 737 Unchecked, 0.0s Time] [2022-11-20 10:37:50,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102338 states. [2022-11-20 10:37:51,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102338 to 102338. [2022-11-20 10:37:51,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102338 states, 102337 states have (on average 1.0911693717814672) internal successors, (111667), 102337 states have internal predecessors, (111667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:52,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102338 states to 102338 states and 111667 transitions. [2022-11-20 10:37:52,124 INFO L78 Accepts]: Start accepts. Automaton has 102338 states and 111667 transitions. Word has length 532 [2022-11-20 10:37:52,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:52,124 INFO L495 AbstractCegarLoop]: Abstraction has 102338 states and 111667 transitions. [2022-11-20 10:37:52,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:52,125 INFO L276 IsEmpty]: Start isEmpty. Operand 102338 states and 111667 transitions. [2022-11-20 10:37:52,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2022-11-20 10:37:52,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:52,140 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 10:37:52,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:52,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:52,341 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:52,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:52,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1646317367, now seen corresponding path program 1 times [2022-11-20 10:37:52,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:52,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776267646] [2022-11-20 10:37:52,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:52,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:53,120 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-11-20 10:37:53,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:53,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776267646] [2022-11-20 10:37:53,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776267646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:53,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:53,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:37:53,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061187105] [2022-11-20 10:37:53,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:53,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:37:53,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:53,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:37:53,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:37:53,125 INFO L87 Difference]: Start difference. First operand 102338 states and 111667 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:56,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:56,540 INFO L93 Difference]: Finished difference Result 211064 states and 230074 transitions. [2022-11-20 10:37:56,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:37:56,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 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 539 [2022-11-20 10:37:56,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:56,652 INFO L225 Difference]: With dead ends: 211064 [2022-11-20 10:37:56,652 INFO L226 Difference]: Without dead ends: 108717 [2022-11-20 10:37:56,694 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 [2022-11-20 10:37:56,695 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 446 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:56,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 661 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 10:37:56,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108717 states. [2022-11-20 10:37:58,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108717 to 105294. [2022-11-20 10:37:58,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105294 states, 105293 states have (on average 1.0802617457950672) internal successors, (113744), 105293 states have internal predecessors, (113744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:58,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105294 states to 105294 states and 113744 transitions. [2022-11-20 10:37:58,415 INFO L78 Accepts]: Start accepts. Automaton has 105294 states and 113744 transitions. Word has length 539 [2022-11-20 10:37:58,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:58,415 INFO L495 AbstractCegarLoop]: Abstraction has 105294 states and 113744 transitions. [2022-11-20 10:37:58,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:58,416 INFO L276 IsEmpty]: Start isEmpty. Operand 105294 states and 113744 transitions. [2022-11-20 10:37:58,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2022-11-20 10:37:58,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:58,428 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:58,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 10:37:58,428 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:58,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:58,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1255719280, now seen corresponding path program 1 times [2022-11-20 10:37:58,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:58,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41072706] [2022-11-20 10:37:58,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:58,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:00,523 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 485 proven. 46 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-11-20 10:38:00,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:38:00,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41072706] [2022-11-20 10:38:00,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41072706] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:38:00,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119083565] [2022-11-20 10:38:00,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:00,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:38:00,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:38:00,527 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:38:00,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:38:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:00,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:38:00,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:02,898 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 485 proven. 46 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-11-20 10:38:02,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:38:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 531 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-11-20 10:38:04,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119083565] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 10:38:04,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:38:04,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2022-11-20 10:38:04,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274500246] [2022-11-20 10:38:04,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:04,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:38:04,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:38:04,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:38:04,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:38:04,646 INFO L87 Difference]: Start difference. First operand 105294 states and 113744 transitions. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:09,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:09,484 INFO L93 Difference]: Finished difference Result 219974 states and 237513 transitions. [2022-11-20 10:38:09,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:38:09,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 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 580 [2022-11-20 10:38:09,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:09,592 INFO L225 Difference]: With dead ends: 219974 [2022-11-20 10:38:09,592 INFO L226 Difference]: Without dead ends: 114256 [2022-11-20 10:38:09,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1163 GetRequests, 1157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:38:09,634 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 733 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:09,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 110 Invalid, 2803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-20 10:38:09,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114256 states. [2022-11-20 10:38:11,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114256 to 105293. [2022-11-20 10:38:11,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105293 states, 105292 states have (on average 1.0796926642100064) internal successors, (113683), 105292 states have internal predecessors, (113683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:11,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105293 states to 105293 states and 113683 transitions. [2022-11-20 10:38:11,299 INFO L78 Accepts]: Start accepts. Automaton has 105293 states and 113683 transitions. Word has length 580 [2022-11-20 10:38:11,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:11,300 INFO L495 AbstractCegarLoop]: Abstraction has 105293 states and 113683 transitions. [2022-11-20 10:38:11,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:38:11,300 INFO L276 IsEmpty]: Start isEmpty. Operand 105293 states and 113683 transitions. [2022-11-20 10:38:11,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2022-11-20 10:38:11,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:11,328 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:38:11,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:38:11,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e54649d4-b770-4c93-a33a-88ee821dc100/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:38:11,543 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:11,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:11,543 INFO L85 PathProgramCache]: Analyzing trace with hash -602514084, now seen corresponding path program 1 times [2022-11-20 10:38:11,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:38:11,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408621647] [2022-11-20 10:38:11,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:11,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:38:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:12,727 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 554 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-11-20 10:38:12,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:38:12,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408621647] [2022-11-20 10:38:12,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408621647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:38:12,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:38:12,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:38:12,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985249990] [2022-11-20 10:38:12,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:12,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:38:12,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:38:12,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:38:12,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:38:12,731 INFO L87 Difference]: Start difference. First operand 105293 states and 113683 transitions. Second operand has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)