./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label47.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_f5ed2480-9dbd-474a-b075-236535153741/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ed2480-9dbd-474a-b075-236535153741/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_f5ed2480-9dbd-474a-b075-236535153741/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ed2480-9dbd-474a-b075-236535153741/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label47.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ed2480-9dbd-474a-b075-236535153741/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_f5ed2480-9dbd-474a-b075-236535153741/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 584120db80e48cf9596b5da45bc5f64e7e8f9b48dd0380aa05459606ea632f16 --- 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 11:32:08,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:32:08,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:32:08,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:32:08,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:32:08,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:32:08,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:32:08,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:32:08,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:32:08,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:32:08,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:32:08,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:32:08,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:32:08,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:32:08,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:32:08,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:32:08,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:32:08,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:32:08,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:32:08,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:32:08,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:32:08,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:32:08,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:32:08,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:32:08,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:32:08,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:32:08,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:32:08,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:32:08,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:32:08,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:32:08,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:32:08,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:32:08,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:32:08,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:32:08,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:32:08,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:32:08,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:32:08,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:32:08,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:32:08,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:32:08,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:32:08,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ed2480-9dbd-474a-b075-236535153741/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:32:08,737 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:32:08,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:32:08,738 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:32:08,739 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:32:08,739 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:32:08,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:32:08,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:32:08,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:32:08,741 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:32:08,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:32:08,742 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:32:08,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:32:08,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:32:08,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:32:08,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:32:08,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:32:08,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:32:08,744 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:32:08,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:32:08,744 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:32:08,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:32:08,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:32:08,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:32:08,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:32:08,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:32:08,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:32:08,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:32:08,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:32:08,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:32:08,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:32:08,748 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:32:08,748 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:32:08,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:32:08,748 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_f5ed2480-9dbd-474a-b075-236535153741/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ed2480-9dbd-474a-b075-236535153741/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 584120db80e48cf9596b5da45bc5f64e7e8f9b48dd0380aa05459606ea632f16 [2022-11-20 11:32:09,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:32:09,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:32:09,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:32:09,080 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:32:09,081 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:32:09,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ed2480-9dbd-474a-b075-236535153741/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/eca-rers2012/Problem17_label47.c [2022-11-20 11:32:12,052 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:32:12,574 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:32:12,575 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ed2480-9dbd-474a-b075-236535153741/sv-benchmarks/c/eca-rers2012/Problem17_label47.c [2022-11-20 11:32:12,601 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ed2480-9dbd-474a-b075-236535153741/bin/uautomizer-ug76WZFUDN/data/b30902212/cbd1f7eca2aa4e0a8604d6c014909036/FLAGa2231edf0 [2022-11-20 11:32:12,621 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ed2480-9dbd-474a-b075-236535153741/bin/uautomizer-ug76WZFUDN/data/b30902212/cbd1f7eca2aa4e0a8604d6c014909036 [2022-11-20 11:32:12,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:32:12,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:32:12,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:32:12,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:32:12,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:32:12,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:32:12" (1/1) ... [2022-11-20 11:32:12,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a2e008f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:12, skipping insertion in model container [2022-11-20 11:32:12,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:32:12" (1/1) ... [2022-11-20 11:32:12,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:32:12,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:32:12,990 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_f5ed2480-9dbd-474a-b075-236535153741/sv-benchmarks/c/eca-rers2012/Problem17_label47.c[6608,6621] [2022-11-20 11:32:13,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:32:13,648 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:32:13,701 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_f5ed2480-9dbd-474a-b075-236535153741/sv-benchmarks/c/eca-rers2012/Problem17_label47.c[6608,6621] [2022-11-20 11:32:14,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:32:14,059 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:32:14,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:14 WrapperNode [2022-11-20 11:32:14,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:32:14,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:32:14,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:32:14,062 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:32:14,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:14" (1/1) ... [2022-11-20 11:32:14,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:14" (1/1) ... [2022-11-20 11:32:14,445 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-11-20 11:32:14,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:32:14,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:32:14,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:32:14,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:32:14,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:14" (1/1) ... [2022-11-20 11:32:14,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:14" (1/1) ... [2022-11-20 11:32:14,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:14" (1/1) ... [2022-11-20 11:32:14,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:14" (1/1) ... [2022-11-20 11:32:14,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:14" (1/1) ... [2022-11-20 11:32:14,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:14" (1/1) ... [2022-11-20 11:32:14,700 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:14" (1/1) ... [2022-11-20 11:32:14,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:14" (1/1) ... [2022-11-20 11:32:14,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:32:14,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:32:14,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:32:14,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:32:14,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:14" (1/1) ... [2022-11-20 11:32:14,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:32:14,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ed2480-9dbd-474a-b075-236535153741/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:32:14,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ed2480-9dbd-474a-b075-236535153741/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:32:14,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ed2480-9dbd-474a-b075-236535153741/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:32:14,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:32:14,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:32:14,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:32:14,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:32:15,073 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:32:15,076 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:32:19,470 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:32:19,494 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:32:19,495 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:32:19,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:32:19 BoogieIcfgContainer [2022-11-20 11:32:19,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:32:19,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:32:19,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:32:19,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:32:19,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:32:12" (1/3) ... [2022-11-20 11:32:19,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f27e662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:32:19, skipping insertion in model container [2022-11-20 11:32:19,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:14" (2/3) ... [2022-11-20 11:32:19,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f27e662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:32:19, skipping insertion in model container [2022-11-20 11:32:19,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:32:19" (3/3) ... [2022-11-20 11:32:19,512 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label47.c [2022-11-20 11:32:19,531 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:32:19,531 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:32:19,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:32:19,633 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;@1e024c02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:32:19,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:32:19,643 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 11:32:19,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 11:32:19,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:32:19,653 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] [2022-11-20 11:32:19,654 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:32:19,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:19,661 INFO L85 PathProgramCache]: Analyzing trace with hash 626000386, now seen corresponding path program 1 times [2022-11-20 11:32:19,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:19,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164568917] [2022-11-20 11:32:19,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:19,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:20,058 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 11:32:20,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:20,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164568917] [2022-11-20 11:32:20,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164568917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:20,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:20,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:32:20,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493780613] [2022-11-20 11:32:20,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:20,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:32:20,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:20,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:32:20,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:32:20,099 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 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 11:32:24,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:32:24,313 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2022-11-20 11:32:24,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:32:24,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-11-20 11:32:24,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:32:24,335 INFO L225 Difference]: With dead ends: 1644 [2022-11-20 11:32:24,336 INFO L226 Difference]: Without dead ends: 977 [2022-11-20 11:32:24,341 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 11:32:24,344 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 444 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 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, 4.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:32:24,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-20 11:32:24,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-11-20 11:32:24,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2022-11-20 11:32:24,425 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 11:32:24,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2022-11-20 11:32:24,431 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 44 [2022-11-20 11:32:24,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:32:24,435 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2022-11-20 11:32:24,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 11:32:24,436 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2022-11-20 11:32:24,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-20 11:32:24,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:32:24,439 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, 1, 1, 1, 1, 1, 1, 1, 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 11:32:24,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:32:24,440 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:32:24,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:24,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1801670618, now seen corresponding path program 1 times [2022-11-20 11:32:24,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:24,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703087610] [2022-11-20 11:32:24,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:24,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:24,707 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:32:24,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:24,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703087610] [2022-11-20 11:32:24,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703087610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:24,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:24,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:32:24,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983000520] [2022-11-20 11:32:24,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:24,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:32:24,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:24,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:32:24,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:32:24,711 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 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 11:32:28,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:32:28,165 INFO L93 Difference]: Finished difference Result 2815 states and 4382 transitions. [2022-11-20 11:32:28,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:32:28,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-11-20 11:32:28,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:32:28,173 INFO L225 Difference]: With dead ends: 2815 [2022-11-20 11:32:28,173 INFO L226 Difference]: Without dead ends: 1846 [2022-11-20 11:32:28,176 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 11:32:28,178 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:32:28,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 580 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-20 11:32:28,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2022-11-20 11:32:28,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1841. [2022-11-20 11:32:28,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.3505434782608696) internal successors, (2485), 1840 states have internal predecessors, (2485), 0 states have call successors, (0), 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 11:32:28,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2485 transitions. [2022-11-20 11:32:28,234 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2485 transitions. Word has length 111 [2022-11-20 11:32:28,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:32:28,237 INFO L495 AbstractCegarLoop]: Abstraction has 1841 states and 2485 transitions. [2022-11-20 11:32:28,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 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 11:32:28,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2485 transitions. [2022-11-20 11:32:28,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-20 11:32:28,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:32:28,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:32:28,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:32:28,250 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:32:28,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:28,251 INFO L85 PathProgramCache]: Analyzing trace with hash 148499438, now seen corresponding path program 1 times [2022-11-20 11:32:28,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:28,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144055401] [2022-11-20 11:32:28,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:28,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:32:28,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:28,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144055401] [2022-11-20 11:32:28,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144055401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:28,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:28,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:32:28,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112331773] [2022-11-20 11:32:28,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:28,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:32:28,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:28,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:32:28,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:32:28,547 INFO L87 Difference]: Start difference. First operand 1841 states and 2485 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 11:32:34,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:32:34,167 INFO L93 Difference]: Finished difference Result 5865 states and 8159 transitions. [2022-11-20 11:32:34,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:32:34,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2022-11-20 11:32:34,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:32:34,184 INFO L225 Difference]: With dead ends: 5865 [2022-11-20 11:32:34,185 INFO L226 Difference]: Without dead ends: 4026 [2022-11-20 11:32:34,197 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 11:32:34,201 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 938 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2907 mSolverCounterSat, 697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 3604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 697 IncrementalHoareTripleChecker+Valid, 2907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:32:34,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 440 Invalid, 3604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [697 Valid, 2907 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-20 11:32:34,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2022-11-20 11:32:34,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 4020. [2022-11-20 11:32:34,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4020 states, 4019 states have (on average 1.3264493655138094) internal successors, (5331), 4019 states have internal predecessors, (5331), 0 states have call successors, (0), 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 11:32:34,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4020 states to 4020 states and 5331 transitions. [2022-11-20 11:32:34,297 INFO L78 Accepts]: Start accepts. Automaton has 4020 states and 5331 transitions. Word has length 114 [2022-11-20 11:32:34,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:32:34,300 INFO L495 AbstractCegarLoop]: Abstraction has 4020 states and 5331 transitions. [2022-11-20 11:32:34,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 11:32:34,300 INFO L276 IsEmpty]: Start isEmpty. Operand 4020 states and 5331 transitions. [2022-11-20 11:32:34,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 11:32:34,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:32:34,310 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, 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] [2022-11-20 11:32:34,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:32:34,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:32:34,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:34,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1947040115, now seen corresponding path program 1 times [2022-11-20 11:32:34,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:34,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609075251] [2022-11-20 11:32:34,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:34,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-20 11:32:34,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:34,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609075251] [2022-11-20 11:32:34,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609075251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:34,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:34,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:32:34,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486900740] [2022-11-20 11:32:34,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:34,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:32:34,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:34,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:32:34,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:32:34,831 INFO L87 Difference]: Start difference. First operand 4020 states and 5331 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 11:32:37,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:32:37,617 INFO L93 Difference]: Finished difference Result 10602 states and 14367 transitions. [2022-11-20 11:32:37,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:32:37,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 179 [2022-11-20 11:32:37,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:32:37,638 INFO L225 Difference]: With dead ends: 10602 [2022-11-20 11:32:37,638 INFO L226 Difference]: Without dead ends: 6580 [2022-11-20 11:32:37,643 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 11:32:37,654 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 11:32:37,655 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 11:32:37,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6580 states. [2022-11-20 11:32:37,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6580 to 5301. [2022-11-20 11:32:37,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5301 states, 5300 states have (on average 1.2269811320754718) internal successors, (6503), 5300 states have internal predecessors, (6503), 0 states have call successors, (0), 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 11:32:37,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5301 states to 5301 states and 6503 transitions. [2022-11-20 11:32:37,826 INFO L78 Accepts]: Start accepts. Automaton has 5301 states and 6503 transitions. Word has length 179 [2022-11-20 11:32:37,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:32:37,828 INFO L495 AbstractCegarLoop]: Abstraction has 5301 states and 6503 transitions. [2022-11-20 11:32:37,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 11:32:37,829 INFO L276 IsEmpty]: Start isEmpty. Operand 5301 states and 6503 transitions. [2022-11-20 11:32:37,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-20 11:32:37,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:32:37,831 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, 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] [2022-11-20 11:32:37,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:32:37,832 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:32:37,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:37,833 INFO L85 PathProgramCache]: Analyzing trace with hash 402637231, now seen corresponding path program 1 times [2022-11-20 11:32:37,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:37,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770838840] [2022-11-20 11:32:37,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:37,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:38,408 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:32:38,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:38,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770838840] [2022-11-20 11:32:38,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770838840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:38,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:38,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:32:38,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743044252] [2022-11-20 11:32:38,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:38,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:32:38,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:38,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:32:38,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:32:38,413 INFO L87 Difference]: Start difference. First operand 5301 states and 6503 transitions. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 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 11:32:42,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:32:42,041 INFO L93 Difference]: Finished difference Result 13191 states and 16563 transitions. [2022-11-20 11:32:42,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:32:42,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2022-11-20 11:32:42,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:32:42,067 INFO L225 Difference]: With dead ends: 13191 [2022-11-20 11:32:42,067 INFO L226 Difference]: Without dead ends: 7892 [2022-11-20 11:32:42,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:32:42,073 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 1659 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 947 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 2691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 947 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:32:42,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 834 Invalid, 2691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [947 Valid, 1744 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-20 11:32:42,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7892 states. [2022-11-20 11:32:42,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7892 to 7858. [2022-11-20 11:32:42,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7858 states, 7857 states have (on average 1.2102583683339696) internal successors, (9509), 7857 states have internal predecessors, (9509), 0 states have call successors, (0), 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 11:32:42,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7858 states to 7858 states and 9509 transitions. [2022-11-20 11:32:42,233 INFO L78 Accepts]: Start accepts. Automaton has 7858 states and 9509 transitions. Word has length 192 [2022-11-20 11:32:42,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:32:42,236 INFO L495 AbstractCegarLoop]: Abstraction has 7858 states and 9509 transitions. [2022-11-20 11:32:42,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 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 11:32:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 7858 states and 9509 transitions. [2022-11-20 11:32:42,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-11-20 11:32:42,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:32:42,246 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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 11:32:42,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:32:42,247 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:32:42,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:42,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1325173592, now seen corresponding path program 1 times [2022-11-20 11:32:42,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:42,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126257119] [2022-11-20 11:32:42,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:42,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:42,777 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2022-11-20 11:32:42,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:42,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126257119] [2022-11-20 11:32:42,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126257119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:42,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:42,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:32:42,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145574920] [2022-11-20 11:32:42,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:42,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:32:42,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:42,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:32:42,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:32:42,781 INFO L87 Difference]: Start difference. First operand 7858 states and 9509 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 11:32:46,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:32:46,776 INFO L93 Difference]: Finished difference Result 23005 states and 27850 transitions. [2022-11-20 11:32:46,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:32:46,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 296 [2022-11-20 11:32:46,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:32:46,819 INFO L225 Difference]: With dead ends: 23005 [2022-11-20 11:32:46,819 INFO L226 Difference]: Without dead ends: 15149 [2022-11-20 11:32:46,828 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 11:32:46,829 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 463 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:32:46,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 923 Invalid, 1876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-20 11:32:46,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15149 states. [2022-11-20 11:32:47,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15149 to 12995. [2022-11-20 11:32:47,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12995 states, 12994 states have (on average 1.2274126519932276) internal successors, (15949), 12994 states have internal predecessors, (15949), 0 states have call successors, (0), 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 11:32:47,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12995 states to 12995 states and 15949 transitions. [2022-11-20 11:32:47,103 INFO L78 Accepts]: Start accepts. Automaton has 12995 states and 15949 transitions. Word has length 296 [2022-11-20 11:32:47,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:32:47,104 INFO L495 AbstractCegarLoop]: Abstraction has 12995 states and 15949 transitions. [2022-11-20 11:32:47,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 11:32:47,105 INFO L276 IsEmpty]: Start isEmpty. Operand 12995 states and 15949 transitions. [2022-11-20 11:32:47,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-11-20 11:32:47,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:32:47,110 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, 3, 3, 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, 1, 1, 1, 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 11:32:47,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:32:47,111 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:32:47,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:47,111 INFO L85 PathProgramCache]: Analyzing trace with hash -918027661, now seen corresponding path program 1 times [2022-11-20 11:32:47,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:47,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139596196] [2022-11-20 11:32:47,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:47,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-11-20 11:32:47,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:47,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139596196] [2022-11-20 11:32:47,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139596196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:47,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:47,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:32:47,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313426988] [2022-11-20 11:32:47,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:47,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:32:47,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:47,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:32:47,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:32:47,492 INFO L87 Difference]: Start difference. First operand 12995 states and 15949 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:50,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:32:50,710 INFO L93 Difference]: Finished difference Result 31501 states and 38602 transitions. [2022-11-20 11:32:50,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:32:50,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 297 [2022-11-20 11:32:50,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:32:50,753 INFO L225 Difference]: With dead ends: 31501 [2022-11-20 11:32:50,753 INFO L226 Difference]: Without dead ends: 17658 [2022-11-20 11:32:50,766 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 11:32:50,767 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 400 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 1620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:32:50,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 952 Invalid, 1620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 11:32:50,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17658 states. [2022-11-20 11:32:50,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17658 to 12121. [2022-11-20 11:32:50,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12121 states, 12120 states have (on average 1.1797029702970296) internal successors, (14298), 12120 states have internal predecessors, (14298), 0 states have call successors, (0), 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 11:32:51,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12121 states to 12121 states and 14298 transitions. [2022-11-20 11:32:51,006 INFO L78 Accepts]: Start accepts. Automaton has 12121 states and 14298 transitions. Word has length 297 [2022-11-20 11:32:51,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:32:51,007 INFO L495 AbstractCegarLoop]: Abstraction has 12121 states and 14298 transitions. [2022-11-20 11:32:51,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:51,008 INFO L276 IsEmpty]: Start isEmpty. Operand 12121 states and 14298 transitions. [2022-11-20 11:32:51,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-11-20 11:32:51,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:32:51,014 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:51,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:32:51,015 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:32:51,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:51,015 INFO L85 PathProgramCache]: Analyzing trace with hash -2082452149, now seen corresponding path program 1 times [2022-11-20 11:32:51,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:51,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739721597] [2022-11-20 11:32:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:51,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:51,339 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-11-20 11:32:51,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:51,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739721597] [2022-11-20 11:32:51,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739721597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:51,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:51,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:32:51,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991894131] [2022-11-20 11:32:51,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:51,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:32:51,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:51,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:32:51,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:32:51,342 INFO L87 Difference]: Start difference. First operand 12121 states and 14298 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:54,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:32:54,682 INFO L93 Difference]: Finished difference Result 31045 states and 36681 transitions. [2022-11-20 11:32:54,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:32:54,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 314 [2022-11-20 11:32:54,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:32:54,724 INFO L225 Difference]: With dead ends: 31045 [2022-11-20 11:32:54,724 INFO L226 Difference]: Without dead ends: 18926 [2022-11-20 11:32:54,737 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 11:32:54,738 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 449 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:32:54,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 405 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 11:32:54,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18926 states. [2022-11-20 11:32:55,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18926 to 16793. [2022-11-20 11:32:55,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16793 states, 16792 states have (on average 1.167877560743211) internal successors, (19611), 16792 states have internal predecessors, (19611), 0 states have call successors, (0), 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 11:32:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16793 states to 16793 states and 19611 transitions. [2022-11-20 11:32:55,081 INFO L78 Accepts]: Start accepts. Automaton has 16793 states and 19611 transitions. Word has length 314 [2022-11-20 11:32:55,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:32:55,082 INFO L495 AbstractCegarLoop]: Abstraction has 16793 states and 19611 transitions. [2022-11-20 11:32:55,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:55,082 INFO L276 IsEmpty]: Start isEmpty. Operand 16793 states and 19611 transitions. [2022-11-20 11:32:55,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-11-20 11:32:55,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:32:55,093 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:55,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:32:55,095 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:32:55,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:55,095 INFO L85 PathProgramCache]: Analyzing trace with hash -2095784456, now seen corresponding path program 1 times [2022-11-20 11:32:55,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:55,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841973057] [2022-11-20 11:32:55,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:55,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:55,580 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2022-11-20 11:32:55,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:55,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841973057] [2022-11-20 11:32:55,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841973057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:55,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:55,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:32:55,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363546303] [2022-11-20 11:32:55,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:55,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:32:55,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:55,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:32:55,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:32:55,583 INFO L87 Difference]: Start difference. First operand 16793 states and 19611 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 11:32:58,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:32:58,729 INFO L93 Difference]: Finished difference Result 41278 states and 48341 transitions. [2022-11-20 11:32:58,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:32:58,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 358 [2022-11-20 11:32:58,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:32:58,764 INFO L225 Difference]: With dead ends: 41278 [2022-11-20 11:32:58,764 INFO L226 Difference]: Without dead ends: 23623 [2022-11-20 11:32:58,780 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 11:32:58,780 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 482 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:32:58,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 801 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 11:32:58,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23623 states. [2022-11-20 11:32:59,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23623 to 21064. [2022-11-20 11:32:59,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21064 states, 21063 states have (on average 1.166595451740018) internal successors, (24572), 21063 states have internal predecessors, (24572), 0 states have call successors, (0), 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 11:32:59,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21064 states to 21064 states and 24572 transitions. [2022-11-20 11:32:59,085 INFO L78 Accepts]: Start accepts. Automaton has 21064 states and 24572 transitions. Word has length 358 [2022-11-20 11:32:59,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:32:59,085 INFO L495 AbstractCegarLoop]: Abstraction has 21064 states and 24572 transitions. [2022-11-20 11:32:59,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 11:32:59,086 INFO L276 IsEmpty]: Start isEmpty. Operand 21064 states and 24572 transitions. [2022-11-20 11:32:59,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-20 11:32:59,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:32:59,096 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, 4, 4, 4, 4, 4, 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, 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 11:32:59,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:32:59,096 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:32:59,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:59,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1853233684, now seen corresponding path program 1 times [2022-11-20 11:32:59,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:59,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423628796] [2022-11-20 11:32:59,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:59,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:00,001 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 447 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-20 11:33:00,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:00,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423628796] [2022-11-20 11:33:00,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423628796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:00,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:00,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:33:00,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486831986] [2022-11-20 11:33:00,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:00,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:33:00,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:00,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:33:00,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:33:00,008 INFO L87 Difference]: Start difference. First operand 21064 states and 24572 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 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 11:33:04,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:33:04,553 INFO L93 Difference]: Finished difference Result 61335 states and 70911 transitions. [2022-11-20 11:33:04,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:33:04,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 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 366 [2022-11-20 11:33:04,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:33:04,618 INFO L225 Difference]: With dead ends: 61335 [2022-11-20 11:33:04,619 INFO L226 Difference]: Without dead ends: 39848 [2022-11-20 11:33:04,634 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 11:33:04,635 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 920 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 2488 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 3023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 2488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:33:04,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 190 Invalid, 3023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 2488 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-20 11:33:04,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39848 states. [2022-11-20 11:33:05,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39848 to 26634. [2022-11-20 11:33:05,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26634 states, 26633 states have (on average 1.168475199939924) internal successors, (31120), 26633 states have internal predecessors, (31120), 0 states have call successors, (0), 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 11:33:05,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26634 states to 26634 states and 31120 transitions. [2022-11-20 11:33:05,202 INFO L78 Accepts]: Start accepts. Automaton has 26634 states and 31120 transitions. Word has length 366 [2022-11-20 11:33:05,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:33:05,203 INFO L495 AbstractCegarLoop]: Abstraction has 26634 states and 31120 transitions. [2022-11-20 11:33:05,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 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 11:33:05,203 INFO L276 IsEmpty]: Start isEmpty. Operand 26634 states and 31120 transitions. [2022-11-20 11:33:05,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-11-20 11:33:05,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:33:05,216 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:33:05,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:33:05,217 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:33:05,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:05,218 INFO L85 PathProgramCache]: Analyzing trace with hash 773910742, now seen corresponding path program 1 times [2022-11-20 11:33:05,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:05,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625778664] [2022-11-20 11:33:05,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:05,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:05,644 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 11:33:05,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:05,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625778664] [2022-11-20 11:33:05,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625778664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:05,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:05,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:33:05,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134867850] [2022-11-20 11:33:05,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:05,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:33:05,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:05,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:33:05,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:33:05,648 INFO L87 Difference]: Start difference. First operand 26634 states and 31120 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 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 11:33:08,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:33:08,617 INFO L93 Difference]: Finished difference Result 64404 states and 75814 transitions. [2022-11-20 11:33:08,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:33:08,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 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 386 [2022-11-20 11:33:08,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:33:08,661 INFO L225 Difference]: With dead ends: 64404 [2022-11-20 11:33:08,661 INFO L226 Difference]: Without dead ends: 36922 [2022-11-20 11:33:08,677 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 11:33:08,678 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 379 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:33:08,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 886 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 11:33:08,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36922 states. [2022-11-20 11:33:09,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36922 to 36058. [2022-11-20 11:33:09,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36058 states, 36057 states have (on average 1.145353190781263) internal successors, (41298), 36057 states have internal predecessors, (41298), 0 states have call successors, (0), 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 11:33:09,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36058 states to 36058 states and 41298 transitions. [2022-11-20 11:33:09,363 INFO L78 Accepts]: Start accepts. Automaton has 36058 states and 41298 transitions. Word has length 386 [2022-11-20 11:33:09,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:33:09,375 INFO L495 AbstractCegarLoop]: Abstraction has 36058 states and 41298 transitions. [2022-11-20 11:33:09,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 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 11:33:09,376 INFO L276 IsEmpty]: Start isEmpty. Operand 36058 states and 41298 transitions. [2022-11-20 11:33:09,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2022-11-20 11:33:09,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:33:09,388 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:33:09,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:33:09,389 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:33:09,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:09,390 INFO L85 PathProgramCache]: Analyzing trace with hash 92841162, now seen corresponding path program 1 times [2022-11-20 11:33:09,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:09,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963065104] [2022-11-20 11:33:09,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:09,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:10,008 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-20 11:33:10,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:10,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963065104] [2022-11-20 11:33:10,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963065104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:10,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:10,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:33:10,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692149557] [2022-11-20 11:33:10,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:10,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:33:10,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:10,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:33:10,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:33:10,011 INFO L87 Difference]: Start difference. First operand 36058 states and 41298 transitions. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 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 11:33:12,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:33:12,835 INFO L93 Difference]: Finished difference Result 82782 states and 94745 transitions. [2022-11-20 11:33:12,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:33:12,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 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 433 [2022-11-20 11:33:12,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:33:12,876 INFO L225 Difference]: With dead ends: 82782 [2022-11-20 11:33:12,876 INFO L226 Difference]: Without dead ends: 45438 [2022-11-20 11:33:12,897 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 11:33:12,897 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 320 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:33:12,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 746 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 11:33:12,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45438 states. [2022-11-20 11:33:13,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45438 to 36049. [2022-11-20 11:33:13,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36049 states, 36048 states have (on average 1.1423102529960054) internal successors, (41178), 36048 states have internal predecessors, (41178), 0 states have call successors, (0), 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 11:33:13,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36049 states to 36049 states and 41178 transitions. [2022-11-20 11:33:13,740 INFO L78 Accepts]: Start accepts. Automaton has 36049 states and 41178 transitions. Word has length 433 [2022-11-20 11:33:13,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:33:13,741 INFO L495 AbstractCegarLoop]: Abstraction has 36049 states and 41178 transitions. [2022-11-20 11:33:13,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 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 11:33:13,741 INFO L276 IsEmpty]: Start isEmpty. Operand 36049 states and 41178 transitions. [2022-11-20 11:33:13,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2022-11-20 11:33:13,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:33:13,752 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:33:13,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:33:13,753 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:33:13,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:13,753 INFO L85 PathProgramCache]: Analyzing trace with hash 470334227, now seen corresponding path program 1 times [2022-11-20 11:33:13,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:13,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951435618] [2022-11-20 11:33:13,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:13,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 355 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-20 11:33:14,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:14,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951435618] [2022-11-20 11:33:14,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951435618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:14,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:14,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:33:14,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423025628] [2022-11-20 11:33:14,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:14,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:33:14,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:14,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:33:14,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:33:14,799 INFO L87 Difference]: Start difference. First operand 36049 states and 41178 transitions. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 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 11:33:19,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:33:19,564 INFO L93 Difference]: Finished difference Result 106198 states and 120766 transitions. [2022-11-20 11:33:19,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:33:19,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 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 449 [2022-11-20 11:33:19,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:33:19,645 INFO L225 Difference]: With dead ends: 106198 [2022-11-20 11:33:19,645 INFO L226 Difference]: Without dead ends: 69726 [2022-11-20 11:33:19,674 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 11:33:19,674 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 783 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 2611 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 2611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:33:19,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 187 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 2611 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-20 11:33:19,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69726 states. [2022-11-20 11:33:20,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69726 to 60287. [2022-11-20 11:33:20,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60287 states, 60286 states have (on average 1.1287695318979531) internal successors, (68049), 60286 states have internal predecessors, (68049), 0 states have call successors, (0), 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 11:33:20,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60287 states to 60287 states and 68049 transitions. [2022-11-20 11:33:20,802 INFO L78 Accepts]: Start accepts. Automaton has 60287 states and 68049 transitions. Word has length 449 [2022-11-20 11:33:20,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:33:20,803 INFO L495 AbstractCegarLoop]: Abstraction has 60287 states and 68049 transitions. [2022-11-20 11:33:20,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 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 11:33:20,803 INFO L276 IsEmpty]: Start isEmpty. Operand 60287 states and 68049 transitions. [2022-11-20 11:33:20,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2022-11-20 11:33:20,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:33:20,817 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 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 11:33:20,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:33:20,817 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:33:20,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:20,818 INFO L85 PathProgramCache]: Analyzing trace with hash -987294033, now seen corresponding path program 1 times [2022-11-20 11:33:20,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:20,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857362619] [2022-11-20 11:33:20,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:20,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:21,465 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 551 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-20 11:33:21,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:21,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857362619] [2022-11-20 11:33:21,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857362619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:21,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:21,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:33:21,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077710597] [2022-11-20 11:33:21,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:21,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:33:21,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:21,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:33:21,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:33:21,469 INFO L87 Difference]: Start difference. First operand 60287 states and 68049 transitions. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 11:33:24,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:33:24,814 INFO L93 Difference]: Finished difference Result 141000 states and 159171 transitions. [2022-11-20 11:33:24,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:33:24,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 468 [2022-11-20 11:33:24,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:33:24,893 INFO L225 Difference]: With dead ends: 141000 [2022-11-20 11:33:24,894 INFO L226 Difference]: Without dead ends: 79423 [2022-11-20 11:33:24,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:33:24,911 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 445 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:33:24,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 649 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-20 11:33:24,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79423 states. [2022-11-20 11:33:25,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79423 to 73450. [2022-11-20 11:33:25,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73450 states, 73449 states have (on average 1.1131124998298139) internal successors, (81757), 73449 states have internal predecessors, (81757), 0 states have call successors, (0), 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 11:33:26,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73450 states to 73450 states and 81757 transitions. [2022-11-20 11:33:26,113 INFO L78 Accepts]: Start accepts. Automaton has 73450 states and 81757 transitions. Word has length 468 [2022-11-20 11:33:26,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:33:26,114 INFO L495 AbstractCegarLoop]: Abstraction has 73450 states and 81757 transitions. [2022-11-20 11:33:26,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 11:33:26,115 INFO L276 IsEmpty]: Start isEmpty. Operand 73450 states and 81757 transitions. [2022-11-20 11:33:26,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2022-11-20 11:33:26,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:33:26,139 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 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 11:33:26,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:33:26,140 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:33:26,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:26,141 INFO L85 PathProgramCache]: Analyzing trace with hash -841867674, now seen corresponding path program 1 times [2022-11-20 11:33:26,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:26,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510248854] [2022-11-20 11:33:26,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:26,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:27,424 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 433 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-11-20 11:33:27,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:27,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510248854] [2022-11-20 11:33:27,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510248854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:27,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:27,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:33:27,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682310776] [2022-11-20 11:33:27,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:27,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:33:27,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:27,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:33:27,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:33:27,427 INFO L87 Difference]: Start difference. First operand 73450 states and 81757 transitions. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 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 11:33:31,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:33:31,895 INFO L93 Difference]: Finished difference Result 184847 states and 205031 transitions. [2022-11-20 11:33:31,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:33:31,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 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 472 [2022-11-20 11:33:31,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:33:32,014 INFO L225 Difference]: With dead ends: 184847 [2022-11-20 11:33:32,014 INFO L226 Difference]: Without dead ends: 110974 [2022-11-20 11:33:32,043 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 11:33:32,044 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 812 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2376 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 2823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 2376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:33:32,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 177 Invalid, 2823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 2376 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-20 11:33:32,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110974 states. [2022-11-20 11:33:33,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110974 to 102446. [2022-11-20 11:33:33,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102446 states, 102445 states have (on average 1.1084874810874128) internal successors, (113559), 102445 states have internal predecessors, (113559), 0 states have call successors, (0), 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 11:33:33,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102446 states to 102446 states and 113559 transitions. [2022-11-20 11:33:33,878 INFO L78 Accepts]: Start accepts. Automaton has 102446 states and 113559 transitions. Word has length 472 [2022-11-20 11:33:33,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:33:33,879 INFO L495 AbstractCegarLoop]: Abstraction has 102446 states and 113559 transitions. [2022-11-20 11:33:33,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 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 11:33:33,880 INFO L276 IsEmpty]: Start isEmpty. Operand 102446 states and 113559 transitions. [2022-11-20 11:33:33,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2022-11-20 11:33:33,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:33:33,896 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:33:33,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:33:33,896 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:33:33,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:33,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1146238285, now seen corresponding path program 1 times [2022-11-20 11:33:33,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:33,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723749654] [2022-11-20 11:33:33,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:33,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:34,931 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 433 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-11-20 11:33:34,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:34,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723749654] [2022-11-20 11:33:34,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723749654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:34,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:34,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:33:34,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961334183] [2022-11-20 11:33:34,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:34,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:33:34,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:34,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:33:34,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:33:34,935 INFO L87 Difference]: Start difference. First operand 102446 states and 113559 transitions. Second operand has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 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 11:33:39,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:33:39,804 INFO L93 Difference]: Finished difference Result 231729 states and 256394 transitions. [2022-11-20 11:33:39,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:33:39,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 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 492 [2022-11-20 11:33:39,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:33:39,956 INFO L225 Difference]: With dead ends: 231729 [2022-11-20 11:33:39,956 INFO L226 Difference]: Without dead ends: 128008 [2022-11-20 11:33:39,997 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 11:33:39,998 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 807 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 2849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:33:39,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 208 Invalid, 2849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-20 11:33:40,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128008 states. [2022-11-20 11:33:41,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128008 to 101163. [2022-11-20 11:33:41,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101163 states, 101162 states have (on average 1.1060279551610288) internal successors, (111888), 101162 states have internal predecessors, (111888), 0 states have call successors, (0), 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 11:33:41,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101163 states to 101163 states and 111888 transitions. [2022-11-20 11:33:41,801 INFO L78 Accepts]: Start accepts. Automaton has 101163 states and 111888 transitions. Word has length 492 [2022-11-20 11:33:41,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:33:41,801 INFO L495 AbstractCegarLoop]: Abstraction has 101163 states and 111888 transitions. [2022-11-20 11:33:41,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 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 11:33:41,802 INFO L276 IsEmpty]: Start isEmpty. Operand 101163 states and 111888 transitions. [2022-11-20 11:33:41,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2022-11-20 11:33:41,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:33:41,822 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:33:41,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:33:41,822 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:33:41,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:41,823 INFO L85 PathProgramCache]: Analyzing trace with hash -280854508, now seen corresponding path program 1 times [2022-11-20 11:33:41,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:41,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107843188] [2022-11-20 11:33:41,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:41,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 630 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 11:33:42,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:42,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107843188] [2022-11-20 11:33:42,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107843188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:42,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:42,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:33:42,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325768582] [2022-11-20 11:33:42,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:42,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:33:42,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:42,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:33:42,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:33:42,891 INFO L87 Difference]: Start difference. First operand 101163 states and 111888 transitions. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 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 11:33:47,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:33:47,607 INFO L93 Difference]: Finished difference Result 237301 states and 263341 transitions. [2022-11-20 11:33:47,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:33:47,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 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 512 [2022-11-20 11:33:47,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:33:47,779 INFO L225 Difference]: With dead ends: 237301 [2022-11-20 11:33:47,779 INFO L226 Difference]: Without dead ends: 136140 [2022-11-20 11:33:47,836 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 11:33:47,837 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 825 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 2763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:33:47,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 209 Invalid, 2763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-20 11:33:47,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136140 states. [2022-11-20 11:33:49,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136140 to 126769. [2022-11-20 11:33:49,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126769 states, 126768 states have (on average 1.1143111826328411) internal successors, (141259), 126768 states have internal predecessors, (141259), 0 states have call successors, (0), 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 11:33:50,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126769 states to 126769 states and 141259 transitions. [2022-11-20 11:33:50,213 INFO L78 Accepts]: Start accepts. Automaton has 126769 states and 141259 transitions. Word has length 512 [2022-11-20 11:33:50,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:33:50,214 INFO L495 AbstractCegarLoop]: Abstraction has 126769 states and 141259 transitions. [2022-11-20 11:33:50,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 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 11:33:50,214 INFO L276 IsEmpty]: Start isEmpty. Operand 126769 states and 141259 transitions. [2022-11-20 11:33:50,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2022-11-20 11:33:50,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:33:50,243 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:33:50,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:33:50,243 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:33:50,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:50,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1255111598, now seen corresponding path program 1 times [2022-11-20 11:33:50,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:50,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205992873] [2022-11-20 11:33:50,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:50,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:50,764 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 590 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-20 11:33:50,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:50,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205992873] [2022-11-20 11:33:50,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205992873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:50,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:50,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:33:50,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928447258] [2022-11-20 11:33:50,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:50,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:33:50,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:50,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:33:50,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:33:50,767 INFO L87 Difference]: Start difference. First operand 126769 states and 141259 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 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 11:33:54,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:33:54,532 INFO L93 Difference]: Finished difference Result 282461 states and 315838 transitions. [2022-11-20 11:33:54,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:33:54,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 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 531 [2022-11-20 11:33:54,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:33:54,743 INFO L225 Difference]: With dead ends: 282461 [2022-11-20 11:33:54,744 INFO L226 Difference]: Without dead ends: 155694 [2022-11-20 11:33:54,818 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 11:33:54,819 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 392 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:33:54,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 312 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 11:33:55,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155694 states. [2022-11-20 11:33:57,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155694 to 153981. [2022-11-20 11:33:57,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153981 states, 153980 states have (on average 1.1081828808936225) internal successors, (170638), 153980 states have internal predecessors, (170638), 0 states have call successors, (0), 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 11:33:57,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153981 states to 153981 states and 170638 transitions. [2022-11-20 11:33:57,694 INFO L78 Accepts]: Start accepts. Automaton has 153981 states and 170638 transitions. Word has length 531 [2022-11-20 11:33:57,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:33:57,695 INFO L495 AbstractCegarLoop]: Abstraction has 153981 states and 170638 transitions. [2022-11-20 11:33:57,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 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 11:33:57,695 INFO L276 IsEmpty]: Start isEmpty. Operand 153981 states and 170638 transitions. [2022-11-20 11:33:57,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2022-11-20 11:33:57,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:33:57,708 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-20 11:33:57,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:33:57,708 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:33:57,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:57,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1230945378, now seen corresponding path program 1 times [2022-11-20 11:33:57,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:57,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271187706] [2022-11-20 11:33:57,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:57,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:59,274 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 453 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-11-20 11:33:59,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:59,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271187706] [2022-11-20 11:33:59,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271187706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:59,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:59,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:33:59,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35083554] [2022-11-20 11:33:59,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:59,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:33:59,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:59,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:33:59,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:33:59,278 INFO L87 Difference]: Start difference. First operand 153981 states and 170638 transitions. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 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 11:34:04,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:34:04,581 INFO L93 Difference]: Finished difference Result 334784 states and 370572 transitions. [2022-11-20 11:34:04,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:34:04,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 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 11:34:04,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:34:04,796 INFO L225 Difference]: With dead ends: 334784 [2022-11-20 11:34:04,796 INFO L226 Difference]: Without dead ends: 180379 [2022-11-20 11:34:04,861 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 11:34:04,862 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 765 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 2837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:34:04,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 248 Invalid, 2837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 2365 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-20 11:34:05,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180379 states. [2022-11-20 11:34:07,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180379 to 145450. [2022-11-20 11:34:07,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145450 states, 145449 states have (on average 1.1063534297245083) internal successors, (160918), 145449 states have internal predecessors, (160918), 0 states have call successors, (0), 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 11:34:08,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145450 states to 145450 states and 160918 transitions. [2022-11-20 11:34:08,051 INFO L78 Accepts]: Start accepts. Automaton has 145450 states and 160918 transitions. Word has length 532 [2022-11-20 11:34:08,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:34:08,051 INFO L495 AbstractCegarLoop]: Abstraction has 145450 states and 160918 transitions. [2022-11-20 11:34:08,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 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 11:34:08,052 INFO L276 IsEmpty]: Start isEmpty. Operand 145450 states and 160918 transitions. [2022-11-20 11:34:08,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2022-11-20 11:34:08,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:34:08,072 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-20 11:34:08,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:34:08,073 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:34:08,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:08,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1462463037, now seen corresponding path program 1 times [2022-11-20 11:34:08,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:08,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244845428] [2022-11-20 11:34:08,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:08,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:08,647 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-11-20 11:34:08,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:08,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244845428] [2022-11-20 11:34:08,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244845428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:08,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:08,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:34:08,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869830174] [2022-11-20 11:34:08,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:08,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:34:08,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:08,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:34:08,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:34:08,650 INFO L87 Difference]: Start difference. First operand 145450 states and 160918 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 2 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)