./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5cbdd74a230613e4bdaea53735767d2cb8a557f2fb27b4c6d6d20587e28e4a0f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:21:30,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:21:30,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:21:30,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:21:30,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:21:30,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:21:30,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:21:30,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:21:30,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:21:30,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:21:30,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:21:30,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:21:30,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:21:30,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:21:30,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:21:30,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:21:30,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:21:30,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:21:30,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:21:30,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:21:30,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:21:30,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:21:30,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:21:30,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:21:30,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:21:30,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:21:30,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:21:30,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:21:30,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:21:30,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:21:30,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:21:30,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:21:30,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:21:30,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:21:30,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:21:30,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:21:30,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:21:30,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:21:30,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:21:30,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:21:30,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:21:30,669 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:21:30,690 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:21:30,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:21:30,691 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:21:30,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:21:30,692 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:21:30,692 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:21:30,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:21:30,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:21:30,693 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:21:30,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:21:30,693 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:21:30,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:21:30,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:21:30,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:21:30,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:21:30,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:21:30,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:21:30,695 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:21:30,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:21:30,695 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:21:30,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:21:30,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:21:30,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:21:30,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:21:30,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:21:30,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:21:30,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:21:30,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:21:30,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:21:30,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:21:30,697 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:21:30,697 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:21:30,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:21:30,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:21:30,698 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_ac75e16a-d08e-4c24-a537-ed56b70fba38/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cbdd74a230613e4bdaea53735767d2cb8a557f2fb27b4c6d6d20587e28e4a0f [2021-12-06 18:21:30,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:21:30,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:21:30,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:21:30,914 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:21:30,915 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:21:30,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c [2021-12-06 18:21:30,957 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/bin/uautomizer-DrprNOufMa/data/a24b595ec/018410ad4062448483e8852112490ac6/FLAG77de9e8b6 [2021-12-06 18:21:31,352 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:21:31,352 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c [2021-12-06 18:21:31,360 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/bin/uautomizer-DrprNOufMa/data/a24b595ec/018410ad4062448483e8852112490ac6/FLAG77de9e8b6 [2021-12-06 18:21:31,369 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/bin/uautomizer-DrprNOufMa/data/a24b595ec/018410ad4062448483e8852112490ac6 [2021-12-06 18:21:31,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:21:31,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:21:31,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:21:31,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:21:31,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:21:31,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:21:31" (1/1) ... [2021-12-06 18:21:31,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb3e06f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:21:31, skipping insertion in model container [2021-12-06 18:21:31,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:21:31" (1/1) ... [2021-12-06 18:21:31,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:21:31,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:21:31,593 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c[16977,16990] [2021-12-06 18:21:31,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:21:31,602 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:21:31,643 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c[16977,16990] [2021-12-06 18:21:31,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:21:31,655 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:21:31,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:21:31 WrapperNode [2021-12-06 18:21:31,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:21:31,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:21:31,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:21:31,656 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:21:31,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:21:31" (1/1) ... [2021-12-06 18:21:31,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:21:31" (1/1) ... [2021-12-06 18:21:31,697 INFO L137 Inliner]: procedures = 25, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 462 [2021-12-06 18:21:31,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:21:31,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:21:31,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:21:31,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:21:31,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:21:31" (1/1) ... [2021-12-06 18:21:31,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:21:31" (1/1) ... [2021-12-06 18:21:31,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:21:31" (1/1) ... [2021-12-06 18:21:31,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:21:31" (1/1) ... [2021-12-06 18:21:31,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:21:31" (1/1) ... [2021-12-06 18:21:31,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:21:31" (1/1) ... [2021-12-06 18:21:31,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:21:31" (1/1) ... [2021-12-06 18:21:31,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:21:31,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:21:31,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:21:31,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:21:31,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:21:31" (1/1) ... [2021-12-06 18:21:31,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:21:31,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:21:31,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:21:31,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:21:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:21:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:21:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:21:31,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:21:31,862 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:21:31,863 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:21:32,256 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:21:32,264 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:21:32,264 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 18:21:32,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:21:32 BoogieIcfgContainer [2021-12-06 18:21:32,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:21:32,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:21:32,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:21:32,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:21:32,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:21:31" (1/3) ... [2021-12-06 18:21:32,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca40a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:21:32, skipping insertion in model container [2021-12-06 18:21:32,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:21:31" (2/3) ... [2021-12-06 18:21:32,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca40a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:21:32, skipping insertion in model container [2021-12-06 18:21:32,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:21:32" (3/3) ... [2021-12-06 18:21:32,274 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c [2021-12-06 18:21:32,279 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:21:32,279 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:21:32,320 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:21:32,325 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:21:32,325 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 18:21:32,338 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 143 states have (on average 1.7202797202797202) internal successors, (246), 144 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:32,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 18:21:32,344 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:32,344 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:32,345 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:21:32,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:32,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1929732074, now seen corresponding path program 1 times [2021-12-06 18:21:32,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:21:32,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137293572] [2021-12-06 18:21:32,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:32,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:21:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:32,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:21:32,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:21:32,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137293572] [2021-12-06 18:21:32,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137293572] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:32,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:32,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:21:32,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105733433] [2021-12-06 18:21:32,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:32,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:21:32,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:21:32,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:21:32,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:21:32,548 INFO L87 Difference]: Start difference. First operand has 145 states, 143 states have (on average 1.7202797202797202) internal successors, (246), 144 states have internal predecessors, (246), 0 states have call successors, (0), 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 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:32,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:32,627 INFO L93 Difference]: Finished difference Result 247 states and 408 transitions. [2021-12-06 18:21:32,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:21:32,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-12-06 18:21:32,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:32,636 INFO L225 Difference]: With dead ends: 247 [2021-12-06 18:21:32,636 INFO L226 Difference]: Without dead ends: 141 [2021-12-06 18:21:32,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:21:32,642 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 3 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:32,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 920 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:21:32,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-06 18:21:32,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-12-06 18:21:32,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.4142857142857144) internal successors, (198), 140 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:32,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 198 transitions. [2021-12-06 18:21:32,674 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 198 transitions. Word has length 37 [2021-12-06 18:21:32,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:32,674 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 198 transitions. [2021-12-06 18:21:32,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:32,674 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 198 transitions. [2021-12-06 18:21:32,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 18:21:32,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:32,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:32,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:21:32,677 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:21:32,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:32,678 INFO L85 PathProgramCache]: Analyzing trace with hash -2008203596, now seen corresponding path program 1 times [2021-12-06 18:21:32,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:21:32,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715941469] [2021-12-06 18:21:32,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:32,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:21:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:32,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:21:32,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:21:32,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715941469] [2021-12-06 18:21:32,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715941469] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:32,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:32,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:21:32,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939117269] [2021-12-06 18:21:32,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:32,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:21:32,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:21:32,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:21:32,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:21:32,779 INFO L87 Difference]: Start difference. First operand 141 states and 198 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:32,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:32,802 INFO L93 Difference]: Finished difference Result 317 states and 480 transitions. [2021-12-06 18:21:32,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:21:32,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-12-06 18:21:32,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:32,805 INFO L225 Difference]: With dead ends: 317 [2021-12-06 18:21:32,805 INFO L226 Difference]: Without dead ends: 223 [2021-12-06 18:21:32,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:21:32,807 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 139 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:32,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 467 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:21:32,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-12-06 18:21:32,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2021-12-06 18:21:32,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.4863636363636363) internal successors, (327), 220 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:32,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 327 transitions. [2021-12-06 18:21:32,826 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 327 transitions. Word has length 77 [2021-12-06 18:21:32,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:32,826 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 327 transitions. [2021-12-06 18:21:32,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:32,827 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 327 transitions. [2021-12-06 18:21:32,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 18:21:32,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:32,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:32,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:21:32,830 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:21:32,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:32,830 INFO L85 PathProgramCache]: Analyzing trace with hash 823495780, now seen corresponding path program 1 times [2021-12-06 18:21:32,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:21:32,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986024835] [2021-12-06 18:21:32,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:32,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:21:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:21:32,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:21:32,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986024835] [2021-12-06 18:21:32,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986024835] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:32,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:32,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:21:32,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359449501] [2021-12-06 18:21:32,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:32,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:21:32,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:21:32,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:21:32,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:21:32,900 INFO L87 Difference]: Start difference. First operand 221 states and 327 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:32,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:32,920 INFO L93 Difference]: Finished difference Result 545 states and 847 transitions. [2021-12-06 18:21:32,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:21:32,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-12-06 18:21:32,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:32,923 INFO L225 Difference]: With dead ends: 545 [2021-12-06 18:21:32,923 INFO L226 Difference]: Without dead ends: 371 [2021-12-06 18:21:32,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:21:32,925 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 134 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:32,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 458 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:21:32,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-12-06 18:21:32,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 369. [2021-12-06 18:21:32,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 1.5326086956521738) internal successors, (564), 368 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:32,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 564 transitions. [2021-12-06 18:21:32,944 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 564 transitions. Word has length 78 [2021-12-06 18:21:32,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:32,945 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 564 transitions. [2021-12-06 18:21:32,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:32,945 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 564 transitions. [2021-12-06 18:21:32,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-06 18:21:32,946 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:32,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:32,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:21:32,947 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:21:32,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:32,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1276515004, now seen corresponding path program 1 times [2021-12-06 18:21:32,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:21:32,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660437431] [2021-12-06 18:21:32,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:32,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:21:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:33,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:21:33,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:21:33,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660437431] [2021-12-06 18:21:33,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660437431] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:33,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:33,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:21:33,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958599797] [2021-12-06 18:21:33,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:33,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:21:33,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:21:33,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:21:33,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:21:33,006 INFO L87 Difference]: Start difference. First operand 369 states and 564 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:33,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:33,029 INFO L93 Difference]: Finished difference Result 965 states and 1518 transitions. [2021-12-06 18:21:33,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:21:33,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-12-06 18:21:33,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:33,032 INFO L225 Difference]: With dead ends: 965 [2021-12-06 18:21:33,033 INFO L226 Difference]: Without dead ends: 643 [2021-12-06 18:21:33,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:21:33,035 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 129 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:33,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 449 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:21:33,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-12-06 18:21:33,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 641. [2021-12-06 18:21:33,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 1.55625) internal successors, (996), 640 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:33,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 996 transitions. [2021-12-06 18:21:33,059 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 996 transitions. Word has length 79 [2021-12-06 18:21:33,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:33,059 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 996 transitions. [2021-12-06 18:21:33,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:33,059 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 996 transitions. [2021-12-06 18:21:33,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-06 18:21:33,060 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:33,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:33,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 18:21:33,061 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:21:33,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:33,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1327982836, now seen corresponding path program 1 times [2021-12-06 18:21:33,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:21:33,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579093169] [2021-12-06 18:21:33,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:33,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:21:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:33,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:21:33,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:21:33,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579093169] [2021-12-06 18:21:33,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579093169] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:33,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:33,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:21:33,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351326110] [2021-12-06 18:21:33,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:33,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:21:33,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:21:33,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:21:33,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:21:33,116 INFO L87 Difference]: Start difference. First operand 641 states and 996 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:33,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:33,150 INFO L93 Difference]: Finished difference Result 1733 states and 2734 transitions. [2021-12-06 18:21:33,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:21:33,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-12-06 18:21:33,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:33,157 INFO L225 Difference]: With dead ends: 1733 [2021-12-06 18:21:33,157 INFO L226 Difference]: Without dead ends: 1139 [2021-12-06 18:21:33,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:21:33,159 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 124 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:33,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 440 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:21:33,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-12-06 18:21:33,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1137. [2021-12-06 18:21:33,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1136 states have (on average 1.5633802816901408) internal successors, (1776), 1136 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:33,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1776 transitions. [2021-12-06 18:21:33,193 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1776 transitions. Word has length 80 [2021-12-06 18:21:33,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:33,194 INFO L470 AbstractCegarLoop]: Abstraction has 1137 states and 1776 transitions. [2021-12-06 18:21:33,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:33,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1776 transitions. [2021-12-06 18:21:33,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-06 18:21:33,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:33,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:33,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 18:21:33,195 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:21:33,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:33,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1219881940, now seen corresponding path program 1 times [2021-12-06 18:21:33,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:21:33,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931409451] [2021-12-06 18:21:33,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:33,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:21:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:33,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:21:33,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:21:33,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931409451] [2021-12-06 18:21:33,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931409451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:33,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:33,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:21:33,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738398884] [2021-12-06 18:21:33,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:33,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:21:33,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:21:33,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:21:33,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:21:33,238 INFO L87 Difference]: Start difference. First operand 1137 states and 1776 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:33,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:33,278 INFO L93 Difference]: Finished difference Result 3125 states and 4914 transitions. [2021-12-06 18:21:33,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:21:33,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-12-06 18:21:33,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:33,292 INFO L225 Difference]: With dead ends: 3125 [2021-12-06 18:21:33,292 INFO L226 Difference]: Without dead ends: 2035 [2021-12-06 18:21:33,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:21:33,294 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 119 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:33,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 431 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:21:33,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2021-12-06 18:21:33,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2033. [2021-12-06 18:21:33,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 2032 states have (on average 1.5590551181102361) internal successors, (3168), 2032 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:33,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 3168 transitions. [2021-12-06 18:21:33,348 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 3168 transitions. Word has length 81 [2021-12-06 18:21:33,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:33,348 INFO L470 AbstractCegarLoop]: Abstraction has 2033 states and 3168 transitions. [2021-12-06 18:21:33,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:33,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 3168 transitions. [2021-12-06 18:21:33,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-06 18:21:33,349 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:33,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:33,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 18:21:33,350 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:21:33,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:33,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1035004540, now seen corresponding path program 1 times [2021-12-06 18:21:33,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:21:33,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307095774] [2021-12-06 18:21:33,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:33,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:21:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:33,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:21:33,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:21:33,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307095774] [2021-12-06 18:21:33,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307095774] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:33,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:33,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:21:33,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904719606] [2021-12-06 18:21:33,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:33,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:21:33,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:21:33,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:21:33,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:21:33,388 INFO L87 Difference]: Start difference. First operand 2033 states and 3168 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:33,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:33,457 INFO L93 Difference]: Finished difference Result 5621 states and 8770 transitions. [2021-12-06 18:21:33,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:21:33,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-12-06 18:21:33,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:33,473 INFO L225 Difference]: With dead ends: 5621 [2021-12-06 18:21:33,473 INFO L226 Difference]: Without dead ends: 3635 [2021-12-06 18:21:33,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:21:33,476 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 114 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:33,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 422 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:21:33,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2021-12-06 18:21:33,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 3633. [2021-12-06 18:21:33,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3633 states, 3632 states have (on average 1.5462555066079295) internal successors, (5616), 3632 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:33,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 5616 transitions. [2021-12-06 18:21:33,587 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 5616 transitions. Word has length 82 [2021-12-06 18:21:33,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:33,587 INFO L470 AbstractCegarLoop]: Abstraction has 3633 states and 5616 transitions. [2021-12-06 18:21:33,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:33,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 5616 transitions. [2021-12-06 18:21:33,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-06 18:21:33,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:33,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:33,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 18:21:33,589 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:21:33,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:33,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1846622820, now seen corresponding path program 1 times [2021-12-06 18:21:33,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:21:33,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37315315] [2021-12-06 18:21:33,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:33,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:21:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:33,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:21:33,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:21:33,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37315315] [2021-12-06 18:21:33,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37315315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:33,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:33,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:21:33,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625348518] [2021-12-06 18:21:33,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:33,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:21:33,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:21:33,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:21:33,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:21:33,654 INFO L87 Difference]: Start difference. First operand 3633 states and 5616 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:34,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:34,220 INFO L93 Difference]: Finished difference Result 28735 states and 44599 transitions. [2021-12-06 18:21:34,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:21:34,221 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-12-06 18:21:34,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:34,313 INFO L225 Difference]: With dead ends: 28735 [2021-12-06 18:21:34,313 INFO L226 Difference]: Without dead ends: 25149 [2021-12-06 18:21:34,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:21:34,321 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 1893 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1893 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:34,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1893 Valid, 2912 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:21:34,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25149 states. [2021-12-06 18:21:34,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25149 to 7217. [2021-12-06 18:21:34,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7217 states, 7216 states have (on average 1.5321507760532151) internal successors, (11056), 7216 states have internal predecessors, (11056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:34,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7217 states to 7217 states and 11056 transitions. [2021-12-06 18:21:34,723 INFO L78 Accepts]: Start accepts. Automaton has 7217 states and 11056 transitions. Word has length 83 [2021-12-06 18:21:34,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:34,724 INFO L470 AbstractCegarLoop]: Abstraction has 7217 states and 11056 transitions. [2021-12-06 18:21:34,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:34,724 INFO L276 IsEmpty]: Start isEmpty. Operand 7217 states and 11056 transitions. [2021-12-06 18:21:34,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-06 18:21:34,725 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:34,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:34,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 18:21:34,726 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:21:34,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:34,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1027409470, now seen corresponding path program 1 times [2021-12-06 18:21:34,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:21:34,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843884786] [2021-12-06 18:21:34,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:34,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:21:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:34,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:21:34,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:21:34,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843884786] [2021-12-06 18:21:34,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843884786] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:34,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:34,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:21:34,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100373304] [2021-12-06 18:21:34,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:34,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:21:34,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:21:34,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:21:34,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:21:34,854 INFO L87 Difference]: Start difference. First operand 7217 states and 11056 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:35,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:35,837 INFO L93 Difference]: Finished difference Result 45245 states and 68470 transitions. [2021-12-06 18:21:35,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:21:35,837 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-12-06 18:21:35,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:35,908 INFO L225 Difference]: With dead ends: 45245 [2021-12-06 18:21:35,908 INFO L226 Difference]: Without dead ends: 38075 [2021-12-06 18:21:35,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:21:35,918 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 1024 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:35,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 1224 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:21:35,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38075 states. [2021-12-06 18:21:36,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38075 to 38065. [2021-12-06 18:21:37,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38065 states, 38064 states have (on average 1.5060949978982765) internal successors, (57328), 38064 states have internal predecessors, (57328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:37,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38065 states to 38065 states and 57328 transitions. [2021-12-06 18:21:37,085 INFO L78 Accepts]: Start accepts. Automaton has 38065 states and 57328 transitions. Word has length 84 [2021-12-06 18:21:37,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:37,085 INFO L470 AbstractCegarLoop]: Abstraction has 38065 states and 57328 transitions. [2021-12-06 18:21:37,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:37,085 INFO L276 IsEmpty]: Start isEmpty. Operand 38065 states and 57328 transitions. [2021-12-06 18:21:37,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-06 18:21:37,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:37,086 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:37,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 18:21:37,086 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:21:37,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:37,087 INFO L85 PathProgramCache]: Analyzing trace with hash 920622579, now seen corresponding path program 1 times [2021-12-06 18:21:37,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:21:37,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955946365] [2021-12-06 18:21:37,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:37,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:21:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:37,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:21:37,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:21:37,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955946365] [2021-12-06 18:21:37,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955946365] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:37,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:37,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:21:37,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753691402] [2021-12-06 18:21:37,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:37,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:21:37,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:21:37,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:21:37,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:21:37,162 INFO L87 Difference]: Start difference. First operand 38065 states and 57328 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:39,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:39,415 INFO L93 Difference]: Finished difference Result 79155 states and 117681 transitions. [2021-12-06 18:21:39,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:21:39,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-12-06 18:21:39,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:39,504 INFO L225 Difference]: With dead ends: 79155 [2021-12-06 18:21:39,504 INFO L226 Difference]: Without dead ends: 79153 [2021-12-06 18:21:39,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-06 18:21:39,519 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 1092 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:39,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1092 Valid, 980 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:21:39,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79153 states. [2021-12-06 18:21:40,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79153 to 40369. [2021-12-06 18:21:40,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40369 states, 40368 states have (on average 1.4772096710265556) internal successors, (59632), 40368 states have internal predecessors, (59632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:41,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40369 states to 40369 states and 59632 transitions. [2021-12-06 18:21:41,004 INFO L78 Accepts]: Start accepts. Automaton has 40369 states and 59632 transitions. Word has length 85 [2021-12-06 18:21:41,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:41,004 INFO L470 AbstractCegarLoop]: Abstraction has 40369 states and 59632 transitions. [2021-12-06 18:21:41,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:41,005 INFO L276 IsEmpty]: Start isEmpty. Operand 40369 states and 59632 transitions. [2021-12-06 18:21:41,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-06 18:21:41,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:41,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:41,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 18:21:41,006 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:21:41,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:41,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1472892313, now seen corresponding path program 1 times [2021-12-06 18:21:41,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:21:41,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401182193] [2021-12-06 18:21:41,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:41,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:21:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:21:41,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:21:41,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401182193] [2021-12-06 18:21:41,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401182193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:41,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:41,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:21:41,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578465154] [2021-12-06 18:21:41,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:41,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:21:41,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:21:41,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:21:41,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:21:41,040 INFO L87 Difference]: Start difference. First operand 40369 states and 59632 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:42,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:42,913 INFO L93 Difference]: Finished difference Result 98711 states and 145940 transitions. [2021-12-06 18:21:42,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:21:42,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-12-06 18:21:42,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:42,983 INFO L225 Difference]: With dead ends: 98711 [2021-12-06 18:21:42,984 INFO L226 Difference]: Without dead ends: 58389 [2021-12-06 18:21:43,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:21:43,024 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 105 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:43,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 397 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:21:43,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58389 states. [2021-12-06 18:21:44,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58389 to 58387. [2021-12-06 18:21:44,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58387 states, 58386 states have (on average 1.4729901003665262) internal successors, (86002), 58386 states have internal predecessors, (86002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:44,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58387 states to 58387 states and 86002 transitions. [2021-12-06 18:21:44,999 INFO L78 Accepts]: Start accepts. Automaton has 58387 states and 86002 transitions. Word has length 86 [2021-12-06 18:21:44,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:44,999 INFO L470 AbstractCegarLoop]: Abstraction has 58387 states and 86002 transitions. [2021-12-06 18:21:44,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:44,999 INFO L276 IsEmpty]: Start isEmpty. Operand 58387 states and 86002 transitions. [2021-12-06 18:21:45,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-06 18:21:45,017 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:45,017 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:45,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 18:21:45,017 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:21:45,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:45,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1072838691, now seen corresponding path program 1 times [2021-12-06 18:21:45,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:21:45,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027195872] [2021-12-06 18:21:45,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:45,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:21:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:45,093 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 18:21:45,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:21:45,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027195872] [2021-12-06 18:21:45,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027195872] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:21:45,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601232365] [2021-12-06 18:21:45,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:45,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:21:45,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:21:45,094 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:21:45,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:21:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:45,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 18:21:45,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:21:45,391 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 18:21:45,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:21:45,806 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 18:21:45,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601232365] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:21:45,806 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:21:45,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2021-12-06 18:21:45,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816947163] [2021-12-06 18:21:45,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:21:45,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 18:21:45,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:21:45,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 18:21:45,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-12-06 18:21:45,809 INFO L87 Difference]: Start difference. First operand 58387 states and 86002 transitions. Second operand has 9 states, 9 states have (on average 34.333333333333336) internal successors, (309), 9 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:50,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:21:50,232 INFO L93 Difference]: Finished difference Result 181680 states and 269213 transitions. [2021-12-06 18:21:50,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:21:50,233 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 34.333333333333336) internal successors, (309), 9 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-12-06 18:21:50,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:21:50,398 INFO L225 Difference]: With dead ends: 181680 [2021-12-06 18:21:50,398 INFO L226 Difference]: Without dead ends: 141358 [2021-12-06 18:21:50,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:21:50,442 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 942 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:21:50,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [942 Valid, 1274 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:21:50,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141358 states. [2021-12-06 18:21:54,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141358 to 133907. [2021-12-06 18:21:55,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133907 states, 133906 states have (on average 1.470061087628635) internal successors, (196850), 133906 states have internal predecessors, (196850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:55,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133907 states to 133907 states and 196850 transitions. [2021-12-06 18:21:55,245 INFO L78 Accepts]: Start accepts. Automaton has 133907 states and 196850 transitions. Word has length 117 [2021-12-06 18:21:55,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:21:55,245 INFO L470 AbstractCegarLoop]: Abstraction has 133907 states and 196850 transitions. [2021-12-06 18:21:55,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 34.333333333333336) internal successors, (309), 9 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:21:55,245 INFO L276 IsEmpty]: Start isEmpty. Operand 133907 states and 196850 transitions. [2021-12-06 18:21:55,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 18:21:55,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:21:55,264 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:21:55,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:21:55,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac75e16a-d08e-4c24-a537-ed56b70fba38/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:21:55,466 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:21:55,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:21:55,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1628565047, now seen corresponding path program 1 times [2021-12-06 18:21:55,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:21:55,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462798856] [2021-12-06 18:21:55,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:21:55,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:21:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:21:55,521 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:21:55,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:21:55,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462798856] [2021-12-06 18:21:55,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462798856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:21:55,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:21:55,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:21:55,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845752761] [2021-12-06 18:21:55,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:21:55,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:21:55,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:21:55,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:21:55,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:21:55,523 INFO L87 Difference]: Start difference. First operand 133907 states and 196850 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:22:03,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:03,038 INFO L93 Difference]: Finished difference Result 355991 states and 522676 transitions. [2021-12-06 18:22:03,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:22:03,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-12-06 18:22:03,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:03,337 INFO L225 Difference]: With dead ends: 355991 [2021-12-06 18:22:03,338 INFO L226 Difference]: Without dead ends: 240789 [2021-12-06 18:22:03,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:22:03,524 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 103 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:03,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 385 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:22:03,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240789 states. [2021-12-06 18:22:11,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240789 to 240787. [2021-12-06 18:22:11,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240787 states, 240786 states have (on average 1.4555746596562924) internal successors, (350482), 240786 states have internal predecessors, (350482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:22:12,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240787 states to 240787 states and 350482 transitions. [2021-12-06 18:22:12,199 INFO L78 Accepts]: Start accepts. Automaton has 240787 states and 350482 transitions. Word has length 118 [2021-12-06 18:22:12,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:12,199 INFO L470 AbstractCegarLoop]: Abstraction has 240787 states and 350482 transitions. [2021-12-06 18:22:12,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:22:12,199 INFO L276 IsEmpty]: Start isEmpty. Operand 240787 states and 350482 transitions. [2021-12-06 18:22:12,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 18:22:12,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:12,227 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:12,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 18:22:12,228 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:22:12,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:12,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1618503993, now seen corresponding path program 1 times [2021-12-06 18:22:12,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:22:12,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221571533] [2021-12-06 18:22:12,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:12,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:22:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:12,290 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:22:12,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:22:12,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221571533] [2021-12-06 18:22:12,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221571533] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:12,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:12,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:22:12,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437876288] [2021-12-06 18:22:12,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:12,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:22:12,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:22:12,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:22:12,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:22:12,292 INFO L87 Difference]: Start difference. First operand 240787 states and 350482 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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) [2021-12-06 18:22:29,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:29,543 INFO L93 Difference]: Finished difference Result 677681 states and 992057 transitions. [2021-12-06 18:22:29,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:22:29,544 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 118 [2021-12-06 18:22:29,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:30,403 INFO L225 Difference]: With dead ends: 677681 [2021-12-06 18:22:30,403 INFO L226 Difference]: Without dead ends: 563279 [2021-12-06 18:22:30,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:22:30,508 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1647 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:30,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1647 Valid, 2092 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:22:30,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563279 states. [2021-12-06 18:22:44,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563279 to 345795. [2021-12-06 18:22:44,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345795 states, 345794 states have (on average 1.4534954336975194) internal successors, (502610), 345794 states have internal predecessors, (502610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:22:45,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345795 states to 345795 states and 502610 transitions. [2021-12-06 18:22:45,591 INFO L78 Accepts]: Start accepts. Automaton has 345795 states and 502610 transitions. Word has length 118 [2021-12-06 18:22:45,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:45,592 INFO L470 AbstractCegarLoop]: Abstraction has 345795 states and 502610 transitions. [2021-12-06 18:22:45,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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) [2021-12-06 18:22:45,592 INFO L276 IsEmpty]: Start isEmpty. Operand 345795 states and 502610 transitions. [2021-12-06 18:22:45,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 18:22:45,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:45,622 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:45,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 18:22:45,622 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:22:45,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:45,622 INFO L85 PathProgramCache]: Analyzing trace with hash -876083369, now seen corresponding path program 1 times [2021-12-06 18:22:45,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:22:45,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258455959] [2021-12-06 18:22:45,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:45,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:22:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:45,818 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:22:45,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:22:45,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258455959] [2021-12-06 18:22:45,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258455959] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:22:45,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:22:45,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:22:45,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141503034] [2021-12-06 18:22:45,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:22:45,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:22:45,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:22:45,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:22:45,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:22:45,820 INFO L87 Difference]: Start difference. First operand 345795 states and 502610 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:23:05,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:23:05,271 INFO L93 Difference]: Finished difference Result 841440 states and 1222418 transitions. [2021-12-06 18:23:05,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:23:05,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-12-06 18:23:05,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:23:06,038 INFO L225 Difference]: With dead ends: 841440 [2021-12-06 18:23:06,038 INFO L226 Difference]: Without dead ends: 570718 [2021-12-06 18:23:06,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:23:06,322 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 106 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:23:06,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 411 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:23:06,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570718 states. [2021-12-06 18:23:28,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570718 to 545964. [2021-12-06 18:23:28,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545964 states, 545963 states have (on average 1.4408741984346924) internal successors, (786664), 545963 states have internal predecessors, (786664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:23:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545964 states to 545964 states and 786664 transitions. [2021-12-06 18:23:30,014 INFO L78 Accepts]: Start accepts. Automaton has 545964 states and 786664 transitions. Word has length 118 [2021-12-06 18:23:30,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:23:30,015 INFO L470 AbstractCegarLoop]: Abstraction has 545964 states and 786664 transitions. [2021-12-06 18:23:30,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:23:30,015 INFO L276 IsEmpty]: Start isEmpty. Operand 545964 states and 786664 transitions. [2021-12-06 18:23:30,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 18:23:30,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:23:30,051 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:23:30,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 18:23:30,052 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:23:30,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:23:30,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1916354679, now seen corresponding path program 1 times [2021-12-06 18:23:30,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:23:30,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609219895] [2021-12-06 18:23:30,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:23:30,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:23:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:23:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:23:30,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:23:30,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609219895] [2021-12-06 18:23:30,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609219895] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:23:30,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:23:30,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:23:30,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769203880] [2021-12-06 18:23:30,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:23:30,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:23:30,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:23:30,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:23:30,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:23:30,095 INFO L87 Difference]: Start difference. First operand 545964 states and 786664 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:23:56,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:23:56,558 INFO L93 Difference]: Finished difference Result 1019498 states and 1468670 transitions. [2021-12-06 18:23:56,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:23:56,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-12-06 18:23:56,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:23:57,748 INFO L225 Difference]: With dead ends: 1019498 [2021-12-06 18:23:57,748 INFO L226 Difference]: Without dead ends: 747432 [2021-12-06 18:23:57,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:23:57,937 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 108 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:23:57,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 437 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:23:58,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747432 states. [2021-12-06 18:24:26,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747432 to 690838. [2021-12-06 18:24:27,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690838 states, 690837 states have (on average 1.4272715560978928) internal successors, (986012), 690837 states have internal predecessors, (986012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:24:28,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690838 states to 690838 states and 986012 transitions. [2021-12-06 18:24:28,602 INFO L78 Accepts]: Start accepts. Automaton has 690838 states and 986012 transitions. Word has length 118 [2021-12-06 18:24:28,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:24:28,603 INFO L470 AbstractCegarLoop]: Abstraction has 690838 states and 986012 transitions. [2021-12-06 18:24:28,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:24:28,603 INFO L276 IsEmpty]: Start isEmpty. Operand 690838 states and 986012 transitions. [2021-12-06 18:24:28,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 18:24:28,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:24:28,776 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:24:28,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 18:24:28,776 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:24:28,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:24:28,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1951266553, now seen corresponding path program 1 times [2021-12-06 18:24:28,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:24:28,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423319530] [2021-12-06 18:24:28,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:24:28,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:24:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:24:28,811 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:24:28,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:24:28,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423319530] [2021-12-06 18:24:28,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423319530] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:24:28,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:24:28,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:24:28,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157782564] [2021-12-06 18:24:28,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:24:28,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:24:28,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:24:28,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:24:28,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:24:28,813 INFO L87 Difference]: Start difference. First operand 690838 states and 986012 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:24:58,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:24:58,615 INFO L93 Difference]: Finished difference Result 1059312 states and 1506770 transitions. [2021-12-06 18:24:58,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:24:58,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-12-06 18:24:58,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:24:59,636 INFO L225 Difference]: With dead ends: 1059312 [2021-12-06 18:24:59,637 INFO L226 Difference]: Without dead ends: 720418 [2021-12-06 18:24:59,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:24:59,935 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 109 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:24:59,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 450 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:25:00,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720418 states. [2021-12-06 18:25:30,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720418 to 688301. [2021-12-06 18:25:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688301 states, 688300 states have (on average 1.4063024843818102) internal successors, (967958), 688300 states have internal predecessors, (967958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:31,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688301 states to 688301 states and 967958 transitions. [2021-12-06 18:25:31,908 INFO L78 Accepts]: Start accepts. Automaton has 688301 states and 967958 transitions. Word has length 118 [2021-12-06 18:25:31,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:25:31,909 INFO L470 AbstractCegarLoop]: Abstraction has 688301 states and 967958 transitions. [2021-12-06 18:25:31,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:31,909 INFO L276 IsEmpty]: Start isEmpty. Operand 688301 states and 967958 transitions. [2021-12-06 18:25:31,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 18:25:31,950 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:25:31,950 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:25:31,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 18:25:31,950 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:25:31,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:31,951 INFO L85 PathProgramCache]: Analyzing trace with hash -898154521, now seen corresponding path program 1 times [2021-12-06 18:25:31,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:31,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77963377] [2021-12-06 18:25:31,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:31,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:25:31,989 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:25:31,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:25:31,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77963377] [2021-12-06 18:25:31,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77963377] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:25:31,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:25:31,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:25:31,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101128265] [2021-12-06 18:25:31,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:25:31,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:25:31,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:25:31,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:25:31,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:25:31,991 INFO L87 Difference]: Start difference. First operand 688301 states and 967958 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:26:14,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:26:14,589 INFO L93 Difference]: Finished difference Result 1650562 states and 2318136 transitions. [2021-12-06 18:26:14,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:26:14,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-12-06 18:26:14,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:26:16,340 INFO L225 Difference]: With dead ends: 1650562 [2021-12-06 18:26:16,340 INFO L226 Difference]: Without dead ends: 1093680 [2021-12-06 18:26:16,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:26:16,841 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 107 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:26:16,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 424 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:26:17,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093680 states. [2021-12-06 18:27:03,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093680 to 1080728. [2021-12-06 18:27:04,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080728 states, 1080727 states have (on average 1.3902789511134634) internal successors, (1502512), 1080727 states have internal predecessors, (1502512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:27:07,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080728 states to 1080728 states and 1502512 transitions. [2021-12-06 18:27:07,129 INFO L78 Accepts]: Start accepts. Automaton has 1080728 states and 1502512 transitions. Word has length 118 [2021-12-06 18:27:07,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:27:07,129 INFO L470 AbstractCegarLoop]: Abstraction has 1080728 states and 1502512 transitions. [2021-12-06 18:27:07,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:27:07,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1080728 states and 1502512 transitions. [2021-12-06 18:27:07,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 18:27:07,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:27:07,198 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:27:07,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 18:27:07,198 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:27:07,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:27:07,199 INFO L85 PathProgramCache]: Analyzing trace with hash 472810193, now seen corresponding path program 1 times [2021-12-06 18:27:07,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:27:07,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874598572] [2021-12-06 18:27:07,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:27:07,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:27:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:27:07,258 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 18:27:07,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:27:07,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874598572] [2021-12-06 18:27:07,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874598572] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:27:07,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:27:07,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:27:07,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36668266] [2021-12-06 18:27:07,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:27:07,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:27:07,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:27:07,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:27:07,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:27:07,260 INFO L87 Difference]: Start difference. First operand 1080728 states and 1502512 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:28:43,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:28:43,491 INFO L93 Difference]: Finished difference Result 2724435 states and 3820650 transitions. [2021-12-06 18:28:43,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:28:43,492 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-12-06 18:28:43,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:28:47,661 INFO L225 Difference]: With dead ends: 2724435 [2021-12-06 18:28:47,661 INFO L226 Difference]: Without dead ends: 2457003 [2021-12-06 18:28:48,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:28:48,173 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 1944 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1944 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:28:48,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1944 Valid, 1792 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:28:50,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457003 states. [2021-12-06 18:29:56,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457003 to 1336600. [2021-12-06 18:29:57,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336600 states, 1336599 states have (on average 1.3907417258280157) internal successors, (1858864), 1336599 states have internal predecessors, (1858864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:00,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336600 states to 1336600 states and 1858864 transitions. [2021-12-06 18:30:00,512 INFO L78 Accepts]: Start accepts. Automaton has 1336600 states and 1858864 transitions. Word has length 118 [2021-12-06 18:30:00,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:30:00,512 INFO L470 AbstractCegarLoop]: Abstraction has 1336600 states and 1858864 transitions. [2021-12-06 18:30:00,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:30:00,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1336600 states and 1858864 transitions. [2021-12-06 18:30:00,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 18:30:00,580 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:30:00,580 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:30:00,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 18:30:00,581 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:30:00,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:30:00,581 INFO L85 PathProgramCache]: Analyzing trace with hash -877664121, now seen corresponding path program 1 times [2021-12-06 18:30:00,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:30:00,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509188166] [2021-12-06 18:30:00,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:30:00,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:30:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:30:00,638 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 18:30:00,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:30:00,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509188166] [2021-12-06 18:30:00,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509188166] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:30:00,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:30:00,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 18:30:00,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911701705] [2021-12-06 18:30:00,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:30:00,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:30:00,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:30:00,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:30:00,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:30:00,639 INFO L87 Difference]: Start difference. First operand 1336600 states and 1858864 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:31:47,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:31:47,443 INFO L93 Difference]: Finished difference Result 2806445 states and 3931452 transitions. [2021-12-06 18:31:47,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:31:47,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-12-06 18:31:47,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:31:51,728 INFO L225 Difference]: With dead ends: 2806445 [2021-12-06 18:31:51,728 INFO L226 Difference]: Without dead ends: 2627883 [2021-12-06 18:31:52,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:31:52,428 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 1801 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1801 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:31:52,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1801 Valid, 1845 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:31:54,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2627883 states.