./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label39.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_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/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_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label39.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/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_4aa66232-44cf-48d5-ab2d-0f5e097772da/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 458d694afbb3bfd6aed28352ce176f8d7e28b3da8c081e4ca83ee27f62e7ab73 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:32:38,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:32:38,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:32:38,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:32:38,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:32:38,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:32:38,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:32:38,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:32:38,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:32:38,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:32:38,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:32:38,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:32:38,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:32:38,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:32:38,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:32:38,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:32:38,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:32:38,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:32:38,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:32:38,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:32:38,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:32:38,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:32:38,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:32:38,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:32:38,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:32:38,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:32:38,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:32:38,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:32:38,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:32:38,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:32:38,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:32:38,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:32:38,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:32:38,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:32:38,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:32:38,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:32:38,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:32:38,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:32:38,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:32:38,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:32:38,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:32:38,598 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:32:38,616 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:32:38,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:32:38,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:32:38,616 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:32:38,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:32:38,617 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:32:38,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:32:38,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:32:38,618 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:32:38,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:32:38,618 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:32:38,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:32:38,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:32:38,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:32:38,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:32:38,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:32:38,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:32:38,619 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:32:38,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:32:38,619 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:32:38,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:32:38,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:32:38,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:32:38,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:32:38,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:32:38,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:32:38,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:32:38,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:32:38,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:32:38,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:32:38,621 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:32:38,621 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:32:38,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:32:38,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:32:38,621 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_4aa66232-44cf-48d5-ab2d-0f5e097772da/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 458d694afbb3bfd6aed28352ce176f8d7e28b3da8c081e4ca83ee27f62e7ab73 [2021-12-07 01:32:38,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:32:38,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:32:38,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:32:38,811 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:32:38,811 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:32:38,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-rers2012/Problem13_label39.c [2021-12-07 01:32:38,857 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/data/d40743715/d86c5a34b22a46dda1031f6f5210dcba/FLAG96e652da0 [2021-12-07 01:32:39,466 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:32:39,466 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/sv-benchmarks/c/eca-rers2012/Problem13_label39.c [2021-12-07 01:32:39,495 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/data/d40743715/d86c5a34b22a46dda1031f6f5210dcba/FLAG96e652da0 [2021-12-07 01:32:39,640 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/data/d40743715/d86c5a34b22a46dda1031f6f5210dcba [2021-12-07 01:32:39,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:32:39,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:32:39,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:32:39,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:32:39,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:32:39,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:32:39" (1/1) ... [2021-12-07 01:32:39,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@659706dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:32:39, skipping insertion in model container [2021-12-07 01:32:39,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:32:39" (1/1) ... [2021-12-07 01:32:39,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:32:39,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:32:39,958 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_4aa66232-44cf-48d5-ab2d-0f5e097772da/sv-benchmarks/c/eca-rers2012/Problem13_label39.c[7279,7292] [2021-12-07 01:32:40,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:32:40,637 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:32:40,664 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_4aa66232-44cf-48d5-ab2d-0f5e097772da/sv-benchmarks/c/eca-rers2012/Problem13_label39.c[7279,7292] [2021-12-07 01:32:41,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:32:41,133 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:32:41,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:32:41 WrapperNode [2021-12-07 01:32:41,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:32:41,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:32:41,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:32:41,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:32:41,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:32:41" (1/1) ... [2021-12-07 01:32:41,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:32:41" (1/1) ... [2021-12-07 01:32:41,522 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2021-12-07 01:32:41,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:32:41,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:32:41,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:32:41,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:32:41,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:32:41" (1/1) ... [2021-12-07 01:32:41,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:32:41" (1/1) ... [2021-12-07 01:32:41,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:32:41" (1/1) ... [2021-12-07 01:32:41,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:32:41" (1/1) ... [2021-12-07 01:32:41,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:32:41" (1/1) ... [2021-12-07 01:32:41,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:32:41" (1/1) ... [2021-12-07 01:32:41,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:32:41" (1/1) ... [2021-12-07 01:32:41,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:32:41,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:32:41,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:32:41,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:32:41,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:32:41" (1/1) ... [2021-12-07 01:32:41,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:32:41,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:32:41,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:32:41,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:32:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:32:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:32:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:32:41,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:32:41,996 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:32:41,997 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:32:45,523 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:32:45,539 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:32:45,539 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 01:32:45,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:32:45 BoogieIcfgContainer [2021-12-07 01:32:45,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:32:45,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:32:45,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:32:45,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:32:45,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:32:39" (1/3) ... [2021-12-07 01:32:45,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e9658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:32:45, skipping insertion in model container [2021-12-07 01:32:45,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:32:41" (2/3) ... [2021-12-07 01:32:45,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e9658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:32:45, skipping insertion in model container [2021-12-07 01:32:45,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:32:45" (3/3) ... [2021-12-07 01:32:45,548 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label39.c [2021-12-07 01:32:45,552 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:32:45,552 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:32:45,591 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:32:45,596 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 [2021-12-07 01:32:45,597 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 01:32:45,625 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:32:45,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-07 01:32:45,631 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:32:45,631 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] [2021-12-07 01:32:45,632 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:32:45,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:32:45,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2122806209, now seen corresponding path program 1 times [2021-12-07 01:32:45,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:32:45,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411946165] [2021-12-07 01:32:45,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:32:45,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:32:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:32:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:32:45,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:32:45,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411946165] [2021-12-07 01:32:45,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411946165] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:32:45,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:32:45,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:32:45,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687880767] [2021-12-07 01:32:45,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:32:45,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:32:45,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:32:45,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:32:45,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:32:45,842 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:32:49,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:32:49,610 INFO L93 Difference]: Finished difference Result 3160 states and 5843 transitions. [2021-12-07 01:32:49,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:32:49,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-12-07 01:32:49,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:32:49,633 INFO L225 Difference]: With dead ends: 3160 [2021-12-07 01:32:49,633 INFO L226 Difference]: Without dead ends: 1983 [2021-12-07 01:32:49,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:32:49,641 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 1052 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:32:49,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1052 Valid, 340 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [974 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-07 01:32:49,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2021-12-07 01:32:49,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1930. [2021-12-07 01:32:49,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1929 states have (on average 1.7973043027475375) internal successors, (3467), 1929 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:32:49,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 3467 transitions. [2021-12-07 01:32:49,730 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 3467 transitions. Word has length 51 [2021-12-07 01:32:49,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:32:49,730 INFO L470 AbstractCegarLoop]: Abstraction has 1930 states and 3467 transitions. [2021-12-07 01:32:49,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:32:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 3467 transitions. [2021-12-07 01:32:49,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-07 01:32:49,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:32:49,735 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-07 01:32:49,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:32:49,735 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:32:49,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:32:49,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1942547750, now seen corresponding path program 1 times [2021-12-07 01:32:49,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:32:49,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493758919] [2021-12-07 01:32:49,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:32:49,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:32:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:32:49,827 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:32:49,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:32:49,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493758919] [2021-12-07 01:32:49,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493758919] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:32:49,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:32:49,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:32:49,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311899237] [2021-12-07 01:32:49,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:32:49,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:32:49,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:32:49,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:32:49,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:32:49,830 INFO L87 Difference]: Start difference. First operand 1930 states and 3467 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:32:52,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:32:52,509 INFO L93 Difference]: Finished difference Result 5456 states and 9917 transitions. [2021-12-07 01:32:52,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:32:52,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-12-07 01:32:52,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:32:52,525 INFO L225 Difference]: With dead ends: 5456 [2021-12-07 01:32:52,525 INFO L226 Difference]: Without dead ends: 3528 [2021-12-07 01:32:52,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:32:52,529 INFO L933 BasicCegarLoop]: 855 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:32:52,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [923 Valid, 1007 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-07 01:32:52,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2021-12-07 01:32:52,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3526. [2021-12-07 01:32:52,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3525 states have (on average 1.5670921985815602) internal successors, (5524), 3525 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:32:52,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 5524 transitions. [2021-12-07 01:32:52,592 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 5524 transitions. Word has length 116 [2021-12-07 01:32:52,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:32:52,593 INFO L470 AbstractCegarLoop]: Abstraction has 3526 states and 5524 transitions. [2021-12-07 01:32:52,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:32:52,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 5524 transitions. [2021-12-07 01:32:52,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-07 01:32:52,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:32:52,597 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-07 01:32:52,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 01:32:52,597 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:32:52,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:32:52,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1167655959, now seen corresponding path program 1 times [2021-12-07 01:32:52,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:32:52,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084948781] [2021-12-07 01:32:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:32:52,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:32:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:32:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:32:52,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:32:52,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084948781] [2021-12-07 01:32:52,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084948781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:32:52,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:32:52,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:32:52,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499966907] [2021-12-07 01:32:52,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:32:52,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:32:52,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:32:52,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:32:52,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:32:52,697 INFO L87 Difference]: Start difference. First operand 3526 states and 5524 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:32:55,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:32:55,357 INFO L93 Difference]: Finished difference Result 10234 states and 16098 transitions. [2021-12-07 01:32:55,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:32:55,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2021-12-07 01:32:55,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:32:55,389 INFO L225 Difference]: With dead ends: 10234 [2021-12-07 01:32:55,389 INFO L226 Difference]: Without dead ends: 6710 [2021-12-07 01:32:55,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:32:55,395 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 973 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:32:55,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [973 Valid, 852 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-07 01:32:55,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6710 states. [2021-12-07 01:32:55,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6710 to 6700. [2021-12-07 01:32:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6700 states, 6699 states have (on average 1.413046723391551) internal successors, (9466), 6699 states have internal predecessors, (9466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:32:55,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6700 states to 6700 states and 9466 transitions. [2021-12-07 01:32:55,547 INFO L78 Accepts]: Start accepts. Automaton has 6700 states and 9466 transitions. Word has length 122 [2021-12-07 01:32:55,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:32:55,547 INFO L470 AbstractCegarLoop]: Abstraction has 6700 states and 9466 transitions. [2021-12-07 01:32:55,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:32:55,548 INFO L276 IsEmpty]: Start isEmpty. Operand 6700 states and 9466 transitions. [2021-12-07 01:32:55,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-07 01:32:55,550 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:32:55,550 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-07 01:32:55,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 01:32:55,551 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:32:55,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:32:55,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1922930380, now seen corresponding path program 1 times [2021-12-07 01:32:55,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:32:55,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889059378] [2021-12-07 01:32:55,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:32:55,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:32:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:32:55,626 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:32:55,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:32:55,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889059378] [2021-12-07 01:32:55,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889059378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:32:55,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:32:55,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:32:55,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121551302] [2021-12-07 01:32:55,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:32:55,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:32:55,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:32:55,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:32:55,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:32:55,629 INFO L87 Difference]: Start difference. First operand 6700 states and 9466 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:32:59,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:32:59,014 INFO L93 Difference]: Finished difference Result 17443 states and 24479 transitions. [2021-12-07 01:32:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:32:59,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2021-12-07 01:32:59,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:32:59,053 INFO L225 Difference]: With dead ends: 17443 [2021-12-07 01:32:59,053 INFO L226 Difference]: Without dead ends: 10745 [2021-12-07 01:32:59,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:32:59,060 INFO L933 BasicCegarLoop]: 834 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:32:59,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [844 Valid, 965 Invalid, 3741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-07 01:32:59,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10745 states. [2021-12-07 01:32:59,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10745 to 10669. [2021-12-07 01:32:59,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3562992125984252) internal successors, (14469), 10668 states have internal predecessors, (14469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:32:59,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14469 transitions. [2021-12-07 01:32:59,243 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14469 transitions. Word has length 152 [2021-12-07 01:32:59,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:32:59,243 INFO L470 AbstractCegarLoop]: Abstraction has 10669 states and 14469 transitions. [2021-12-07 01:32:59,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:32:59,244 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14469 transitions. [2021-12-07 01:32:59,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-07 01:32:59,246 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:32:59,246 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-07 01:32:59,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 01:32:59,247 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:32:59,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:32:59,247 INFO L85 PathProgramCache]: Analyzing trace with hash -528449331, now seen corresponding path program 1 times [2021-12-07 01:32:59,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:32:59,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942854394] [2021-12-07 01:32:59,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:32:59,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:32:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:32:59,366 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:32:59,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:32:59,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942854394] [2021-12-07 01:32:59,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942854394] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:32:59,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:32:59,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:32:59,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486698321] [2021-12-07 01:32:59,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:32:59,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:32:59,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:32:59,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:32:59,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:32:59,369 INFO L87 Difference]: Start difference. First operand 10669 states and 14469 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:01,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:33:01,870 INFO L93 Difference]: Finished difference Result 20549 states and 28119 transitions. [2021-12-07 01:33:01,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:33:01,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2021-12-07 01:33:01,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:33:01,895 INFO L225 Difference]: With dead ends: 20549 [2021-12-07 01:33:01,895 INFO L226 Difference]: Without dead ends: 10669 [2021-12-07 01:33:01,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:33:01,903 INFO L933 BasicCegarLoop]: 1083 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:33:01,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 1212 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-07 01:33:01,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10669 states. [2021-12-07 01:33:02,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10669 to 10669. [2021-12-07 01:33:02,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3539557555305586) internal successors, (14444), 10668 states have internal predecessors, (14444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:02,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14444 transitions. [2021-12-07 01:33:02,030 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14444 transitions. Word has length 162 [2021-12-07 01:33:02,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:33:02,030 INFO L470 AbstractCegarLoop]: Abstraction has 10669 states and 14444 transitions. [2021-12-07 01:33:02,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:02,030 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14444 transitions. [2021-12-07 01:33:02,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-07 01:33:02,033 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:33:02,033 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-07 01:33:02,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 01:33:02,033 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:33:02,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:33:02,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1216054921, now seen corresponding path program 1 times [2021-12-07 01:33:02,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:33:02,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357893602] [2021-12-07 01:33:02,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:33:02,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:33:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:33:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:33:02,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:33:02,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357893602] [2021-12-07 01:33:02,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357893602] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:33:02,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812794150] [2021-12-07 01:33:02,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:33:02,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:33:02,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:33:02,133 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:33:02,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 01:33:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:33:02,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:33:02,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:33:02,512 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:33:02,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:33:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:33:03,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812794150] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:33:03,416 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:33:03,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-07 01:33:03,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099158208] [2021-12-07 01:33:03,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:33:03,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:33:03,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:33:03,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:33:03,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:33:03,418 INFO L87 Difference]: Start difference. First operand 10669 states and 14444 transitions. Second operand has 6 states, 6 states have (on average 58.5) internal successors, (351), 5 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:14,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:33:14,511 INFO L93 Difference]: Finished difference Result 57154 states and 77638 transitions. [2021-12-07 01:33:14,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 01:33:14,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 58.5) internal successors, (351), 5 states have internal predecessors, (351), 0 states have call successors, (0), 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 176 [2021-12-07 01:33:14,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:33:14,570 INFO L225 Difference]: With dead ends: 57154 [2021-12-07 01:33:14,570 INFO L226 Difference]: Without dead ends: 47274 [2021-12-07 01:33:14,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 348 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:33:14,580 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 7939 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 9946 mSolverCounterSat, 4616 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7939 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 14562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4616 IncrementalHoareTripleChecker+Valid, 9946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2021-12-07 01:33:14,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7939 Valid, 1088 Invalid, 14562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4616 Valid, 9946 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2021-12-07 01:33:14,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47274 states. [2021-12-07 01:33:14,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47274 to 24091. [2021-12-07 01:33:14,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24091 states, 24090 states have (on average 1.2878372768783728) internal successors, (31024), 24090 states have internal predecessors, (31024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:14,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24091 states to 24091 states and 31024 transitions. [2021-12-07 01:33:14,903 INFO L78 Accepts]: Start accepts. Automaton has 24091 states and 31024 transitions. Word has length 176 [2021-12-07 01:33:14,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:33:14,904 INFO L470 AbstractCegarLoop]: Abstraction has 24091 states and 31024 transitions. [2021-12-07 01:33:14,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.5) internal successors, (351), 5 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:14,904 INFO L276 IsEmpty]: Start isEmpty. Operand 24091 states and 31024 transitions. [2021-12-07 01:33:14,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-12-07 01:33:14,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:33:14,909 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:33:14,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:33:15,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-07 01:33:15,111 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:33:15,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:33:15,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1810841034, now seen corresponding path program 1 times [2021-12-07 01:33:15,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:33:15,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540539647] [2021-12-07 01:33:15,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:33:15,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:33:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:33:15,239 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:33:15,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:33:15,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540539647] [2021-12-07 01:33:15,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540539647] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:33:15,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:33:15,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:33:15,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515203122] [2021-12-07 01:33:15,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:33:15,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:33:15,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:33:15,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:33:15,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:33:15,242 INFO L87 Difference]: Start difference. First operand 24091 states and 31024 transitions. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:21,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:33:21,189 INFO L93 Difference]: Finished difference Result 66524 states and 87195 transitions. [2021-12-07 01:33:21,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:33:21,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 248 [2021-12-07 01:33:21,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:33:21,230 INFO L225 Difference]: With dead ends: 66524 [2021-12-07 01:33:21,230 INFO L226 Difference]: Without dead ends: 43222 [2021-12-07 01:33:21,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:33:21,248 INFO L933 BasicCegarLoop]: 1022 mSDtfsCounter, 1728 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 6224 mSolverCounterSat, 995 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1728 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 7219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 995 IncrementalHoareTripleChecker+Valid, 6224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:33:21,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1728 Valid, 1225 Invalid, 7219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [995 Valid, 6224 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-12-07 01:33:21,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43222 states. [2021-12-07 01:33:21,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43222 to 31196. [2021-12-07 01:33:21,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31196 states, 31195 states have (on average 1.263888443660843) internal successors, (39427), 31195 states have internal predecessors, (39427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:21,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31196 states to 31196 states and 39427 transitions. [2021-12-07 01:33:21,599 INFO L78 Accepts]: Start accepts. Automaton has 31196 states and 39427 transitions. Word has length 248 [2021-12-07 01:33:21,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:33:21,600 INFO L470 AbstractCegarLoop]: Abstraction has 31196 states and 39427 transitions. [2021-12-07 01:33:21,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:21,600 INFO L276 IsEmpty]: Start isEmpty. Operand 31196 states and 39427 transitions. [2021-12-07 01:33:21,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-12-07 01:33:21,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:33:21,602 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:33:21,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 01:33:21,603 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:33:21,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:33:21,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1470073660, now seen corresponding path program 1 times [2021-12-07 01:33:21,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:33:21,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396385172] [2021-12-07 01:33:21,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:33:21,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:33:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:33:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-12-07 01:33:21,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:33:21,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396385172] [2021-12-07 01:33:21,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396385172] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:33:21,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:33:21,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:33:21,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517804657] [2021-12-07 01:33:21,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:33:21,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:33:21,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:33:21,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:33:21,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:33:21,748 INFO L87 Difference]: Start difference. First operand 31196 states and 39427 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:24,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:33:24,572 INFO L93 Difference]: Finished difference Result 55308 states and 71092 transitions. [2021-12-07 01:33:24,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:33:24,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 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 263 [2021-12-07 01:33:24,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:33:24,604 INFO L225 Difference]: With dead ends: 55308 [2021-12-07 01:33:24,604 INFO L226 Difference]: Without dead ends: 31210 [2021-12-07 01:33:24,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:33:24,617 INFO L933 BasicCegarLoop]: 1027 mSDtfsCounter, 730 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2711 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:33:24,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [730 Valid, 1211 Invalid, 2715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2711 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-07 01:33:24,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31210 states. [2021-12-07 01:33:24,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31210 to 31196. [2021-12-07 01:33:24,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31196 states, 31195 states have (on average 1.2626061868889245) internal successors, (39387), 31195 states have internal predecessors, (39387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:24,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31196 states to 31196 states and 39387 transitions. [2021-12-07 01:33:24,929 INFO L78 Accepts]: Start accepts. Automaton has 31196 states and 39387 transitions. Word has length 263 [2021-12-07 01:33:24,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:33:24,929 INFO L470 AbstractCegarLoop]: Abstraction has 31196 states and 39387 transitions. [2021-12-07 01:33:24,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:24,929 INFO L276 IsEmpty]: Start isEmpty. Operand 31196 states and 39387 transitions. [2021-12-07 01:33:24,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-12-07 01:33:24,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:33:24,931 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:33:24,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 01:33:24,932 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:33:24,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:33:24,932 INFO L85 PathProgramCache]: Analyzing trace with hash 722056462, now seen corresponding path program 1 times [2021-12-07 01:33:24,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:33:24,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631298007] [2021-12-07 01:33:24,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:33:24,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:33:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:33:25,020 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:33:25,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:33:25,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631298007] [2021-12-07 01:33:25,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631298007] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:33:25,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:33:25,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:33:25,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508526904] [2021-12-07 01:33:25,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:33:25,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:33:25,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:33:25,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:33:25,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:33:25,022 INFO L87 Difference]: Start difference. First operand 31196 states and 39387 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:28,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:33:28,028 INFO L93 Difference]: Finished difference Result 88375 states and 112490 transitions. [2021-12-07 01:33:28,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:33:28,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 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 278 [2021-12-07 01:33:28,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:33:28,085 INFO L225 Difference]: With dead ends: 88375 [2021-12-07 01:33:28,085 INFO L226 Difference]: Without dead ends: 57968 [2021-12-07 01:33:28,102 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 [2021-12-07 01:33:28,102 INFO L933 BasicCegarLoop]: 1001 mSDtfsCounter, 789 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 850 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 3321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 850 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-07 01:33:28,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [789 Valid, 1120 Invalid, 3321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [850 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-07 01:33:28,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57968 states. [2021-12-07 01:33:28,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57968 to 56379. [2021-12-07 01:33:28,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56379 states, 56378 states have (on average 1.2060378161694278) internal successors, (67994), 56378 states have internal predecessors, (67994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:28,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56379 states to 56379 states and 67994 transitions. [2021-12-07 01:33:28,686 INFO L78 Accepts]: Start accepts. Automaton has 56379 states and 67994 transitions. Word has length 278 [2021-12-07 01:33:28,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:33:28,687 INFO L470 AbstractCegarLoop]: Abstraction has 56379 states and 67994 transitions. [2021-12-07 01:33:28,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:28,687 INFO L276 IsEmpty]: Start isEmpty. Operand 56379 states and 67994 transitions. [2021-12-07 01:33:28,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-12-07 01:33:28,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:33:28,692 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:33:28,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 01:33:28,692 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:33:28,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:33:28,693 INFO L85 PathProgramCache]: Analyzing trace with hash 196849213, now seen corresponding path program 1 times [2021-12-07 01:33:28,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:33:28,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516269744] [2021-12-07 01:33:28,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:33:28,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:33:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:33:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-12-07 01:33:28,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:33:28,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516269744] [2021-12-07 01:33:28,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516269744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:33:28,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:33:28,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:33:28,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988773570] [2021-12-07 01:33:28,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:33:28,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:33:28,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:33:28,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:33:28,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:33:28,786 INFO L87 Difference]: Start difference. First operand 56379 states and 67994 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:31,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:33:31,604 INFO L93 Difference]: Finished difference Result 113552 states and 136795 transitions. [2021-12-07 01:33:31,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:33:31,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 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 337 [2021-12-07 01:33:31,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:33:31,661 INFO L225 Difference]: With dead ends: 113552 [2021-12-07 01:33:31,661 INFO L226 Difference]: Without dead ends: 57962 [2021-12-07 01:33:31,691 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 [2021-12-07 01:33:31,692 INFO L933 BasicCegarLoop]: 1407 mSDtfsCounter, 944 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 3110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-07 01:33:31,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [944 Valid, 1501 Invalid, 3110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-07 01:33:31,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57962 states. [2021-12-07 01:33:32,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57962 to 56373. [2021-12-07 01:33:32,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56373 states, 56372 states have (on average 1.1599198183495352) internal successors, (65387), 56372 states have internal predecessors, (65387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:32,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56373 states to 56373 states and 65387 transitions. [2021-12-07 01:33:32,268 INFO L78 Accepts]: Start accepts. Automaton has 56373 states and 65387 transitions. Word has length 337 [2021-12-07 01:33:32,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:33:32,269 INFO L470 AbstractCegarLoop]: Abstraction has 56373 states and 65387 transitions. [2021-12-07 01:33:32,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:32,269 INFO L276 IsEmpty]: Start isEmpty. Operand 56373 states and 65387 transitions. [2021-12-07 01:33:32,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2021-12-07 01:33:32,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:33:32,273 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-07 01:33:32,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-07 01:33:32,274 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:33:32,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:33:32,274 INFO L85 PathProgramCache]: Analyzing trace with hash -471969901, now seen corresponding path program 1 times [2021-12-07 01:33:32,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:33:32,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132128532] [2021-12-07 01:33:32,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:33:32,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:33:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:33:32,447 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2021-12-07 01:33:32,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:33:32,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132128532] [2021-12-07 01:33:32,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132128532] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:33:32,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:33:32,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:33:32,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292338775] [2021-12-07 01:33:32,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:33:32,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:33:32,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:33:32,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:33:32,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:33:32,449 INFO L87 Difference]: Start difference. First operand 56373 states and 65387 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:35,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:33:35,154 INFO L93 Difference]: Finished difference Result 111956 states and 129980 transitions. [2021-12-07 01:33:35,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:33:35,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 367 [2021-12-07 01:33:35,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:33:35,206 INFO L225 Difference]: With dead ends: 111956 [2021-12-07 01:33:35,206 INFO L226 Difference]: Without dead ends: 56372 [2021-12-07 01:33:35,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:33:35,219 INFO L933 BasicCegarLoop]: 1365 mSDtfsCounter, 1159 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:33:35,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1159 Valid, 1449 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-07 01:33:35,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56372 states. [2021-12-07 01:33:35,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56372 to 56370. [2021-12-07 01:33:35,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56370 states, 56369 states have (on average 1.1242526920825275) internal successors, (63373), 56369 states have internal predecessors, (63373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:35,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56370 states to 56370 states and 63373 transitions. [2021-12-07 01:33:35,789 INFO L78 Accepts]: Start accepts. Automaton has 56370 states and 63373 transitions. Word has length 367 [2021-12-07 01:33:35,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:33:35,789 INFO L470 AbstractCegarLoop]: Abstraction has 56370 states and 63373 transitions. [2021-12-07 01:33:35,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:35,790 INFO L276 IsEmpty]: Start isEmpty. Operand 56370 states and 63373 transitions. [2021-12-07 01:33:35,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-12-07 01:33:35,797 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:33:35,798 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:33:35,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 01:33:35,798 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:33:35,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:33:35,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1657202739, now seen corresponding path program 1 times [2021-12-07 01:33:35,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:33:35,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678392801] [2021-12-07 01:33:35,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:33:35,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:33:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:33:35,914 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2021-12-07 01:33:35,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:33:35,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678392801] [2021-12-07 01:33:35,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678392801] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:33:35,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:33:35,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:33:35,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972376558] [2021-12-07 01:33:35,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:33:35,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:33:35,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:33:35,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:33:35,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:33:35,916 INFO L87 Difference]: Start difference. First operand 56370 states and 63373 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:38,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:33:38,769 INFO L93 Difference]: Finished difference Result 134018 states and 150648 transitions. [2021-12-07 01:33:38,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:33:38,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 380 [2021-12-07 01:33:38,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:33:38,842 INFO L225 Difference]: With dead ends: 134018 [2021-12-07 01:33:38,842 INFO L226 Difference]: Without dead ends: 78437 [2021-12-07 01:33:38,868 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 [2021-12-07 01:33:38,869 INFO L933 BasicCegarLoop]: 1330 mSDtfsCounter, 1052 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2478 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 3185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-07 01:33:38,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1052 Valid, 1382 Invalid, 3185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2478 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-07 01:33:38,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78437 states. [2021-12-07 01:33:39,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78437 to 76046. [2021-12-07 01:33:39,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76046 states, 76045 states have (on average 1.1164047603392728) internal successors, (84897), 76045 states have internal predecessors, (84897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:39,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76046 states to 76046 states and 84897 transitions. [2021-12-07 01:33:39,629 INFO L78 Accepts]: Start accepts. Automaton has 76046 states and 84897 transitions. Word has length 380 [2021-12-07 01:33:39,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:33:39,630 INFO L470 AbstractCegarLoop]: Abstraction has 76046 states and 84897 transitions. [2021-12-07 01:33:39,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:39,630 INFO L276 IsEmpty]: Start isEmpty. Operand 76046 states and 84897 transitions. [2021-12-07 01:33:39,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2021-12-07 01:33:39,636 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:33:39,636 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:33:39,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-07 01:33:39,637 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:33:39,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:33:39,637 INFO L85 PathProgramCache]: Analyzing trace with hash -26732311, now seen corresponding path program 1 times [2021-12-07 01:33:39,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:33:39,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514198484] [2021-12-07 01:33:39,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:33:39,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:33:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:33:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 575 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-12-07 01:33:39,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:33:39,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514198484] [2021-12-07 01:33:39,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514198484] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:33:39,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:33:39,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:33:39,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135090571] [2021-12-07 01:33:39,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:33:39,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:33:39,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:33:39,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:33:39,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:33:39,727 INFO L87 Difference]: Start difference. First operand 76046 states and 84897 transitions. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:33:42,934 INFO L93 Difference]: Finished difference Result 174137 states and 195482 transitions. [2021-12-07 01:33:42,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:33:42,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 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 419 [2021-12-07 01:33:42,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:33:43,045 INFO L225 Difference]: With dead ends: 174137 [2021-12-07 01:33:43,045 INFO L226 Difference]: Without dead ends: 98880 [2021-12-07 01:33:43,087 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 [2021-12-07 01:33:43,087 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 949 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 2401 mSolverCounterSat, 795 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 3196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 795 IncrementalHoareTripleChecker+Valid, 2401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-07 01:33:43,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [949 Valid, 848 Invalid, 3196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [795 Valid, 2401 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-07 01:33:43,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98880 states. [2021-12-07 01:33:43,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98880 to 97283. [2021-12-07 01:33:43,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97283 states, 97282 states have (on average 1.1086429144137662) internal successors, (107851), 97282 states have internal predecessors, (107851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:44,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97283 states to 97283 states and 107851 transitions. [2021-12-07 01:33:44,186 INFO L78 Accepts]: Start accepts. Automaton has 97283 states and 107851 transitions. Word has length 419 [2021-12-07 01:33:44,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:33:44,187 INFO L470 AbstractCegarLoop]: Abstraction has 97283 states and 107851 transitions. [2021-12-07 01:33:44,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:44,187 INFO L276 IsEmpty]: Start isEmpty. Operand 97283 states and 107851 transitions. [2021-12-07 01:33:44,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2021-12-07 01:33:44,193 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:33:44,193 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:33:44,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 01:33:44,193 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:33:44,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:33:44,194 INFO L85 PathProgramCache]: Analyzing trace with hash 543900027, now seen corresponding path program 1 times [2021-12-07 01:33:44,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:33:44,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690548628] [2021-12-07 01:33:44,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:33:44,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:33:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:33:44,296 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 281 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-07 01:33:44,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:33:44,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690548628] [2021-12-07 01:33:44,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690548628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:33:44,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:33:44,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:33:44,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355884493] [2021-12-07 01:33:44,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:33:44,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:33:44,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:33:44,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:33:44,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:33:44,298 INFO L87 Difference]: Start difference. First operand 97283 states and 107851 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:47,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:33:47,738 INFO L93 Difference]: Finished difference Result 267159 states and 296916 transitions. [2021-12-07 01:33:47,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:33:47,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 434 [2021-12-07 01:33:47,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:33:47,914 INFO L225 Difference]: With dead ends: 267159 [2021-12-07 01:33:47,914 INFO L226 Difference]: Without dead ends: 170665 [2021-12-07 01:33:47,960 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 [2021-12-07 01:33:47,961 INFO L933 BasicCegarLoop]: 814 mSDtfsCounter, 1069 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 2676 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 3212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 2676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-07 01:33:47,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1069 Valid, 1019 Invalid, 3212 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [536 Valid, 2676 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-07 01:33:48,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170665 states. [2021-12-07 01:33:49,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170665 to 167478. [2021-12-07 01:33:49,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167478 states, 167477 states have (on average 1.0927530347450696) internal successors, (183011), 167477 states have internal predecessors, (183011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:49,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167478 states to 167478 states and 183011 transitions. [2021-12-07 01:33:49,939 INFO L78 Accepts]: Start accepts. Automaton has 167478 states and 183011 transitions. Word has length 434 [2021-12-07 01:33:49,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:33:49,940 INFO L470 AbstractCegarLoop]: Abstraction has 167478 states and 183011 transitions. [2021-12-07 01:33:49,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:49,940 INFO L276 IsEmpty]: Start isEmpty. Operand 167478 states and 183011 transitions. [2021-12-07 01:33:49,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2021-12-07 01:33:49,950 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:33:49,951 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:33:49,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 01:33:49,951 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:33:49,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:33:49,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1008979966, now seen corresponding path program 1 times [2021-12-07 01:33:49,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:33:49,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132048450] [2021-12-07 01:33:49,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:33:49,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:33:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:33:50,184 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 401 proven. 113 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-12-07 01:33:50,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:33:50,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132048450] [2021-12-07 01:33:50,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132048450] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:33:50,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566593415] [2021-12-07 01:33:50,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:33:50,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:33:50,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:33:50,186 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:33:50,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 01:33:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:33:50,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:33:50,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:33:50,953 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 401 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-12-07 01:33:50,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:33:50,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566593415] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:33:50,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:33:50,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-07 01:33:50,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693099015] [2021-12-07 01:33:50,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:33:50,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:33:50,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:33:50,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:33:50,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:33:50,956 INFO L87 Difference]: Start difference. First operand 167478 states and 183011 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:54,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:33:54,242 INFO L93 Difference]: Finished difference Result 319226 states and 350133 transitions. [2021-12-07 01:33:54,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:33:54,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 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 445 [2021-12-07 01:33:54,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:33:54,592 INFO L225 Difference]: With dead ends: 319226 [2021-12-07 01:33:54,592 INFO L226 Difference]: Without dead ends: 173792 [2021-12-07 01:33:54,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:33:54,644 INFO L933 BasicCegarLoop]: 1025 mSDtfsCounter, 686 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2459 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 2615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:33:54,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 1160 Invalid, 2615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2459 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-07 01:33:54,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173792 states. [2021-12-07 01:33:56,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173792 to 173773. [2021-12-07 01:33:56,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173773 states, 173772 states have (on average 1.08305135464862) internal successors, (188204), 173772 states have internal predecessors, (188204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:56,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173773 states to 173773 states and 188204 transitions. [2021-12-07 01:33:56,601 INFO L78 Accepts]: Start accepts. Automaton has 173773 states and 188204 transitions. Word has length 445 [2021-12-07 01:33:56,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:33:56,602 INFO L470 AbstractCegarLoop]: Abstraction has 173773 states and 188204 transitions. [2021-12-07 01:33:56,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:33:56,602 INFO L276 IsEmpty]: Start isEmpty. Operand 173773 states and 188204 transitions. [2021-12-07 01:33:56,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2021-12-07 01:33:56,610 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:33:56,610 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:33:56,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 01:33:56,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:33:56,812 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:33:56,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:33:56,814 INFO L85 PathProgramCache]: Analyzing trace with hash 252167170, now seen corresponding path program 1 times [2021-12-07 01:33:56,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:33:56,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80221886] [2021-12-07 01:33:56,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:33:56,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:33:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:33:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 572 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2021-12-07 01:33:56,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:33:56,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80221886] [2021-12-07 01:33:56,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80221886] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:33:56,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:33:56,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:33:56,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044262789] [2021-12-07 01:33:56,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:33:56,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:33:56,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:33:56,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:33:56,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:33:56,966 INFO L87 Difference]: Start difference. First operand 173773 states and 188204 transitions. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:00,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:00,212 INFO L93 Difference]: Finished difference Result 328457 states and 356251 transitions. [2021-12-07 01:34:00,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:34:00,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 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 481 [2021-12-07 01:34:00,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:00,379 INFO L225 Difference]: With dead ends: 328457 [2021-12-07 01:34:00,379 INFO L226 Difference]: Without dead ends: 153899 [2021-12-07 01:34:00,432 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 [2021-12-07 01:34:00,432 INFO L933 BasicCegarLoop]: 1456 mSDtfsCounter, 989 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 2841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:00,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [989 Valid, 1586 Invalid, 2841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 2316 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-07 01:34:00,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153899 states. [2021-12-07 01:34:01,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153899 to 147589. [2021-12-07 01:34:01,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147589 states, 147588 states have (on average 1.0632707266173402) internal successors, (156926), 147588 states have internal predecessors, (156926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:02,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147589 states to 147589 states and 156926 transitions. [2021-12-07 01:34:02,087 INFO L78 Accepts]: Start accepts. Automaton has 147589 states and 156926 transitions. Word has length 481 [2021-12-07 01:34:02,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:02,087 INFO L470 AbstractCegarLoop]: Abstraction has 147589 states and 156926 transitions. [2021-12-07 01:34:02,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:02,088 INFO L276 IsEmpty]: Start isEmpty. Operand 147589 states and 156926 transitions. [2021-12-07 01:34:02,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2021-12-07 01:34:02,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:02,102 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:34:02,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-07 01:34:02,103 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:02,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:02,103 INFO L85 PathProgramCache]: Analyzing trace with hash -620253442, now seen corresponding path program 1 times [2021-12-07 01:34:02,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:02,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931235951] [2021-12-07 01:34:02,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:02,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-07 01:34:02,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:02,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931235951] [2021-12-07 01:34:02,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931235951] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:02,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:02,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:34:02,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815160675] [2021-12-07 01:34:02,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:02,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:34:02,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:02,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:34:02,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:34:02,295 INFO L87 Difference]: Start difference. First operand 147589 states and 156926 transitions. Second operand has 4 states, 4 states have (on average 108.25) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:07,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:07,957 INFO L93 Difference]: Finished difference Result 351112 states and 375245 transitions. [2021-12-07 01:34:07,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:34:07,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 532 [2021-12-07 01:34:07,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:08,229 INFO L225 Difference]: With dead ends: 351112 [2021-12-07 01:34:08,229 INFO L226 Difference]: Without dead ends: 220058 [2021-12-07 01:34:08,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:34:08,291 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 1397 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 5054 mSolverCounterSat, 853 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 5907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 853 IncrementalHoareTripleChecker+Valid, 5054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:08,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1397 Valid, 731 Invalid, 5907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [853 Valid, 5054 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-07 01:34:08,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220058 states. [2021-12-07 01:34:10,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220058 to 217673. [2021-12-07 01:34:10,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217673 states, 217672 states have (on average 1.0643123598809217) internal successors, (231671), 217672 states have internal predecessors, (231671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:10,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217673 states to 217673 states and 231671 transitions. [2021-12-07 01:34:10,591 INFO L78 Accepts]: Start accepts. Automaton has 217673 states and 231671 transitions. Word has length 532 [2021-12-07 01:34:10,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:10,591 INFO L470 AbstractCegarLoop]: Abstraction has 217673 states and 231671 transitions. [2021-12-07 01:34:10,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:10,592 INFO L276 IsEmpty]: Start isEmpty. Operand 217673 states and 231671 transitions. [2021-12-07 01:34:10,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2021-12-07 01:34:10,604 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:10,605 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-12-07 01:34:10,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-07 01:34:10,605 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:10,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:10,606 INFO L85 PathProgramCache]: Analyzing trace with hash 875757203, now seen corresponding path program 1 times [2021-12-07 01:34:10,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:10,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134301483] [2021-12-07 01:34:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:10,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2021-12-07 01:34:10,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:10,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134301483] [2021-12-07 01:34:10,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134301483] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:10,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:10,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:34:10,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004177292] [2021-12-07 01:34:10,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:10,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:34:10,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:10,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:34:10,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:34:10,753 INFO L87 Difference]: Start difference. First operand 217673 states and 231671 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 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) [2021-12-07 01:34:15,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:15,199 INFO L93 Difference]: Finished difference Result 455049 states and 484953 transitions. [2021-12-07 01:34:15,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:34:15,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 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) Word has length 537 [2021-12-07 01:34:15,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:15,487 INFO L225 Difference]: With dead ends: 455049 [2021-12-07 01:34:15,487 INFO L226 Difference]: Without dead ends: 253911 [2021-12-07 01:34:15,562 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 [2021-12-07 01:34:15,563 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 826 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 3115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:15,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 1723 Invalid, 3115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-07 01:34:15,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253911 states. [2021-12-07 01:34:17,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253911 to 243654. [2021-12-07 01:34:17,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243654 states, 243653 states have (on average 1.063110242845358) internal successors, (259030), 243653 states have internal predecessors, (259030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:18,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243654 states to 243654 states and 259030 transitions. [2021-12-07 01:34:18,293 INFO L78 Accepts]: Start accepts. Automaton has 243654 states and 259030 transitions. Word has length 537 [2021-12-07 01:34:18,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:18,294 INFO L470 AbstractCegarLoop]: Abstraction has 243654 states and 259030 transitions. [2021-12-07 01:34:18,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 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) [2021-12-07 01:34:18,294 INFO L276 IsEmpty]: Start isEmpty. Operand 243654 states and 259030 transitions. [2021-12-07 01:34:18,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2021-12-07 01:34:18,305 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:18,306 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:34:18,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-07 01:34:18,306 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:18,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:18,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1501709771, now seen corresponding path program 1 times [2021-12-07 01:34:18,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:18,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084171640] [2021-12-07 01:34:18,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:18,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:18,435 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2021-12-07 01:34:18,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:18,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084171640] [2021-12-07 01:34:18,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084171640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:18,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:18,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:34:18,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196879586] [2021-12-07 01:34:18,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:18,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:34:18,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:18,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:34:18,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:34:18,437 INFO L87 Difference]: Start difference. First operand 243654 states and 259030 transitions. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:22,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:22,395 INFO L93 Difference]: Finished difference Result 528249 states and 562943 transitions. [2021-12-07 01:34:22,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:34:22,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 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 548 [2021-12-07 01:34:22,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:22,689 INFO L225 Difference]: With dead ends: 528249 [2021-12-07 01:34:22,689 INFO L226 Difference]: Without dead ends: 283021 [2021-12-07 01:34:22,746 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 [2021-12-07 01:34:22,746 INFO L933 BasicCegarLoop]: 1706 mSDtfsCounter, 677 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 2459 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 2459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:22,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [677 Valid, 1847 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 2459 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-07 01:34:22,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283021 states. [2021-12-07 01:34:25,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283021 to 280638. [2021-12-07 01:34:25,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280638 states, 280637 states have (on average 1.0555129936537235) internal successors, (296216), 280637 states have internal predecessors, (296216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:25,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280638 states to 280638 states and 296216 transitions. [2021-12-07 01:34:25,852 INFO L78 Accepts]: Start accepts. Automaton has 280638 states and 296216 transitions. Word has length 548 [2021-12-07 01:34:25,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:25,853 INFO L470 AbstractCegarLoop]: Abstraction has 280638 states and 296216 transitions. [2021-12-07 01:34:25,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:25,853 INFO L276 IsEmpty]: Start isEmpty. Operand 280638 states and 296216 transitions. [2021-12-07 01:34:25,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 712 [2021-12-07 01:34:25,891 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:25,892 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:34:25,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-07 01:34:25,892 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:25,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:25,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1799228142, now seen corresponding path program 1 times [2021-12-07 01:34:25,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:25,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439563625] [2021-12-07 01:34:25,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:25,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:26,138 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 497 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-12-07 01:34:26,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:26,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439563625] [2021-12-07 01:34:26,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439563625] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:26,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:26,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:34:26,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034597595] [2021-12-07 01:34:26,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:26,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:34:26,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:26,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:34:26,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:34:26,140 INFO L87 Difference]: Start difference. First operand 280638 states and 296216 transitions. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:31,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:31,168 INFO L93 Difference]: Finished difference Result 616414 states and 652107 transitions. [2021-12-07 01:34:31,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:34:31,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 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 711 [2021-12-07 01:34:31,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:31,710 INFO L225 Difference]: With dead ends: 616414 [2021-12-07 01:34:31,710 INFO L226 Difference]: Without dead ends: 355459 [2021-12-07 01:34:31,764 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 [2021-12-07 01:34:31,765 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 818 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 907 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 907 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:31,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [818 Valid, 577 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [907 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-07 01:34:32,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355459 states. [2021-12-07 01:34:35,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355459 to 350729. [2021-12-07 01:34:35,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350729 states, 350728 states have (on average 1.0501898907415432) internal successors, (368331), 350728 states have internal predecessors, (368331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:35,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350729 states to 350729 states and 368331 transitions. [2021-12-07 01:34:35,801 INFO L78 Accepts]: Start accepts. Automaton has 350729 states and 368331 transitions. Word has length 711 [2021-12-07 01:34:35,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:35,802 INFO L470 AbstractCegarLoop]: Abstraction has 350729 states and 368331 transitions. [2021-12-07 01:34:35,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:35,802 INFO L276 IsEmpty]: Start isEmpty. Operand 350729 states and 368331 transitions. [2021-12-07 01:34:35,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2021-12-07 01:34:35,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:35,835 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:34:35,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-07 01:34:35,835 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:35,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:35,836 INFO L85 PathProgramCache]: Analyzing trace with hash -777075647, now seen corresponding path program 1 times [2021-12-07 01:34:35,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:35,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050867780] [2021-12-07 01:34:35,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:35,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:36,025 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 643 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-12-07 01:34:36,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:36,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050867780] [2021-12-07 01:34:36,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050867780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:36,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:36,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:34:36,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769906195] [2021-12-07 01:34:36,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:36,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:34:36,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:36,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:34:36,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:34:36,027 INFO L87 Difference]: Start difference. First operand 350729 states and 368331 transitions. Second operand has 4 states, 4 states have (on average 168.25) internal successors, (673), 4 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:43,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:43,564 INFO L93 Difference]: Finished difference Result 833158 states and 875851 transitions. [2021-12-07 01:34:43,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:34:43,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 168.25) internal successors, (673), 4 states have internal predecessors, (673), 0 states have call successors, (0), 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 808 [2021-12-07 01:34:43,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:44,243 INFO L225 Difference]: With dead ends: 833158 [2021-12-07 01:34:44,243 INFO L226 Difference]: Without dead ends: 483218 [2021-12-07 01:34:44,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:34:44,334 INFO L933 BasicCegarLoop]: 589 mSDtfsCounter, 1733 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 6260 mSolverCounterSat, 1038 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 7298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1038 IncrementalHoareTripleChecker+Valid, 6260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:44,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1733 Valid, 851 Invalid, 7298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1038 Valid, 6260 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-12-07 01:34:44,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483218 states. [2021-12-07 01:34:48,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483218 to 396402. [2021-12-07 01:34:48,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396402 states, 396401 states have (on average 1.0473535636892943) internal successors, (415172), 396401 states have internal predecessors, (415172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:49,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396402 states to 396402 states and 415172 transitions. [2021-12-07 01:34:49,519 INFO L78 Accepts]: Start accepts. Automaton has 396402 states and 415172 transitions. Word has length 808 [2021-12-07 01:34:49,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:49,520 INFO L470 AbstractCegarLoop]: Abstraction has 396402 states and 415172 transitions. [2021-12-07 01:34:49,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.25) internal successors, (673), 4 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:49,520 INFO L276 IsEmpty]: Start isEmpty. Operand 396402 states and 415172 transitions. [2021-12-07 01:34:49,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2021-12-07 01:34:49,567 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:49,568 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:34:49,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-07 01:34:49,568 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:49,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:49,569 INFO L85 PathProgramCache]: Analyzing trace with hash -896269310, now seen corresponding path program 1 times [2021-12-07 01:34:49,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:49,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581176903] [2021-12-07 01:34:49,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:49,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:49,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2156 backedges. 1533 proven. 0 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2021-12-07 01:34:49,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:49,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581176903] [2021-12-07 01:34:49,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581176903] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:49,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:49,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:34:49,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604887555] [2021-12-07 01:34:49,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:49,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:34:49,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:49,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:34:49,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:34:49,772 INFO L87 Difference]: Start difference. First operand 396402 states and 415172 transitions. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:54,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:54,634 INFO L93 Difference]: Finished difference Result 774721 states and 811917 transitions. [2021-12-07 01:34:54,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:34:54,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 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 872 [2021-12-07 01:34:54,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:55,136 INFO L225 Difference]: With dead ends: 774721 [2021-12-07 01:34:55,136 INFO L226 Difference]: Without dead ends: 396418 [2021-12-07 01:34:55,258 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 [2021-12-07 01:34:55,259 INFO L933 BasicCegarLoop]: 1683 mSDtfsCounter, 759 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 2464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:55,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 1822 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 2464 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-07 01:34:55,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396418 states. [2021-12-07 01:34:59,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396418 to 379867. [2021-12-07 01:34:59,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379867 states, 379866 states have (on average 1.0439812986684778) internal successors, (396573), 379866 states have internal predecessors, (396573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:59,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379867 states to 379867 states and 396573 transitions. [2021-12-07 01:34:59,573 INFO L78 Accepts]: Start accepts. Automaton has 379867 states and 396573 transitions. Word has length 872 [2021-12-07 01:34:59,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:59,574 INFO L470 AbstractCegarLoop]: Abstraction has 379867 states and 396573 transitions. [2021-12-07 01:34:59,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:59,574 INFO L276 IsEmpty]: Start isEmpty. Operand 379867 states and 396573 transitions. [2021-12-07 01:34:59,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 924 [2021-12-07 01:34:59,622 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:59,623 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:34:59,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-07 01:34:59,623 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:59,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:59,623 INFO L85 PathProgramCache]: Analyzing trace with hash -623903190, now seen corresponding path program 1 times [2021-12-07 01:34:59,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:59,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909457221] [2021-12-07 01:34:59,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:59,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:35:00,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 627 proven. 200 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2021-12-07 01:35:00,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:35:00,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909457221] [2021-12-07 01:35:00,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909457221] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:35:00,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041907461] [2021-12-07 01:35:00,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:35:00,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:35:00,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:35:00,046 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:35:00,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 01:35:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:35:00,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 1131 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:35:00,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:35:01,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 686 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2021-12-07 01:35:01,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:35:01,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041907461] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:35:01,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:35:01,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-12-07 01:35:01,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612566311] [2021-12-07 01:35:01,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:35:01,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:35:01,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:35:01,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:35:01,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:35:01,006 INFO L87 Difference]: Start difference. First operand 379867 states and 396573 transitions. Second operand has 4 states, 4 states have (on average 157.25) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:35:09,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:35:09,195 INFO L93 Difference]: Finished difference Result 818941 states and 855045 transitions. [2021-12-07 01:35:09,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:35:09,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 157.25) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 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 923 [2021-12-07 01:35:09,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:35:09,758 INFO L225 Difference]: With dead ends: 818941 [2021-12-07 01:35:09,758 INFO L226 Difference]: Without dead ends: 442224 [2021-12-07 01:35:09,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 925 GetRequests, 921 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:35:09,922 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 1663 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 6051 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 6691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 6051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:35:09,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1663 Valid, 827 Invalid, 6691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 6051 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-12-07 01:35:10,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442224 states. [2021-12-07 01:35:14,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442224 to 435005. [2021-12-07 01:35:14,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435005 states, 435004 states have (on average 1.0442041912258277) internal successors, (454233), 435004 states have internal predecessors, (454233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:35:14,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435005 states to 435005 states and 454233 transitions. [2021-12-07 01:35:14,997 INFO L78 Accepts]: Start accepts. Automaton has 435005 states and 454233 transitions. Word has length 923 [2021-12-07 01:35:14,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:35:14,997 INFO L470 AbstractCegarLoop]: Abstraction has 435005 states and 454233 transitions. [2021-12-07 01:35:14,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.25) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:35:14,997 INFO L276 IsEmpty]: Start isEmpty. Operand 435005 states and 454233 transitions. [2021-12-07 01:35:15,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2021-12-07 01:35:15,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:35:15,028 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:35:15,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 01:35:15,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:35:15,229 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:35:15,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:35:15,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1819083881, now seen corresponding path program 1 times [2021-12-07 01:35:15,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:35:15,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178588324] [2021-12-07 01:35:15,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:35:15,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:35:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:35:15,767 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 726 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:35:15,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:35:15,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178588324] [2021-12-07 01:35:15,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178588324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:35:15,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:35:15,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:35:15,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216495527] [2021-12-07 01:35:15,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:35:15,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:35:15,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:35:15,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:35:15,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:35:15,769 INFO L87 Difference]: Start difference. First operand 435005 states and 454233 transitions. Second operand has 4 states, 4 states have (on average 248.75) internal successors, (995), 4 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:35:23,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:35:23,419 INFO L93 Difference]: Finished difference Result 943379 states and 986050 transitions. [2021-12-07 01:35:23,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:35:23,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 248.75) internal successors, (995), 4 states have internal predecessors, (995), 0 states have call successors, (0), 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 995 [2021-12-07 01:35:23,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:35:24,040 INFO L225 Difference]: With dead ends: 943379 [2021-12-07 01:35:24,040 INFO L226 Difference]: Without dead ends: 528842 [2021-12-07 01:35:24,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:35:24,163 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 1249 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 5538 mSolverCounterSat, 833 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 6371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 833 IncrementalHoareTripleChecker+Valid, 5538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:35:24,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1249 Valid, 656 Invalid, 6371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [833 Valid, 5538 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-12-07 01:35:24,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528842 states. [2021-12-07 01:35:29,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528842 to 522399. [2021-12-07 01:35:29,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522399 states, 522398 states have (on average 1.0441368458531617) internal successors, (545455), 522398 states have internal predecessors, (545455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:35:30,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522399 states to 522399 states and 545455 transitions. [2021-12-07 01:35:30,692 INFO L78 Accepts]: Start accepts. Automaton has 522399 states and 545455 transitions. Word has length 995 [2021-12-07 01:35:30,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:35:30,692 INFO L470 AbstractCegarLoop]: Abstraction has 522399 states and 545455 transitions. [2021-12-07 01:35:30,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.75) internal successors, (995), 4 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:35:30,693 INFO L276 IsEmpty]: Start isEmpty. Operand 522399 states and 545455 transitions. [2021-12-07 01:35:30,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2021-12-07 01:35:30,723 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:35:30,723 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:35:30,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-07 01:35:30,724 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:35:30,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:35:30,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1905502659, now seen corresponding path program 1 times [2021-12-07 01:35:30,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:35:30,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680481783] [2021-12-07 01:35:30,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:35:30,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:35:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:35:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1178 backedges. 658 proven. 0 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2021-12-07 01:35:31,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:35:31,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680481783] [2021-12-07 01:35:31,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680481783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:35:31,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:35:31,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:35:31,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181429650] [2021-12-07 01:35:31,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:35:31,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:35:31,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:35:31,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:35:31,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:35:31,014 INFO L87 Difference]: Start difference. First operand 522399 states and 545455 transitions. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:35:36,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:35:36,276 INFO L93 Difference]: Finished difference Result 1029050 states and 1074620 transitions. [2021-12-07 01:35:36,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:35:36,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 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 1034 [2021-12-07 01:35:36,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:35:36,897 INFO L225 Difference]: With dead ends: 1029050 [2021-12-07 01:35:36,897 INFO L226 Difference]: Without dead ends: 512951 [2021-12-07 01:35:37,062 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 [2021-12-07 01:35:37,062 INFO L933 BasicCegarLoop]: 1601 mSDtfsCounter, 697 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 2765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-07 01:35:37,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 1733 Invalid, 2765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-07 01:35:37,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512951 states. [2021-12-07 01:35:42,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512951 to 497982. [2021-12-07 01:35:42,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497982 states, 497981 states have (on average 1.0356660193862819) internal successors, (515742), 497981 states have internal predecessors, (515742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:35:43,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497982 states to 497982 states and 515742 transitions. [2021-12-07 01:35:43,345 INFO L78 Accepts]: Start accepts. Automaton has 497982 states and 515742 transitions. Word has length 1034 [2021-12-07 01:35:43,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:35:43,346 INFO L470 AbstractCegarLoop]: Abstraction has 497982 states and 515742 transitions. [2021-12-07 01:35:43,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:35:43,346 INFO L276 IsEmpty]: Start isEmpty. Operand 497982 states and 515742 transitions. [2021-12-07 01:35:43,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1103 [2021-12-07 01:35:43,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:35:43,386 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:35:43,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-07 01:35:43,386 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:35:43,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:35:43,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1460913791, now seen corresponding path program 1 times [2021-12-07 01:35:43,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:35:43,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71497056] [2021-12-07 01:35:43,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:35:43,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:35:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:35:43,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1957 backedges. 1271 proven. 420 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2021-12-07 01:35:43,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:35:43,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71497056] [2021-12-07 01:35:43,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71497056] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:35:43,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636490151] [2021-12-07 01:35:43,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:35:43,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:35:43,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:35:43,760 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:35:43,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 01:35:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:35:44,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 1346 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:35:44,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:35:44,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1957 backedges. 1469 proven. 0 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2021-12-07 01:35:44,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:35:44,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636490151] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:35:44,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:35:44,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-07 01:35:44,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473264627] [2021-12-07 01:35:44,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:35:44,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:35:44,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:35:44,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:35:44,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:35:44,879 INFO L87 Difference]: Start difference. First operand 497982 states and 515742 transitions. Second operand has 3 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:35:50,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:35:50,100 INFO L93 Difference]: Finished difference Result 950236 states and 984593 transitions. [2021-12-07 01:35:50,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:35:50,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 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 1102 [2021-12-07 01:35:50,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:35:50,699 INFO L225 Difference]: With dead ends: 950236 [2021-12-07 01:35:50,699 INFO L226 Difference]: Without dead ends: 472724 [2021-12-07 01:35:51,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1108 GetRequests, 1102 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:35:51,058 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 1085 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2180 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 2809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 2180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-07 01:35:51,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1085 Valid, 324 Invalid, 2809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 2180 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-07 01:35:51,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472724 states. [2021-12-07 01:35:55,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472724 to 442808. [2021-12-07 01:35:55,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442808 states, 442807 states have (on average 1.0320545971495483) internal successors, (457001), 442807 states have internal predecessors, (457001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:35:56,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442808 states to 442808 states and 457001 transitions. [2021-12-07 01:35:56,459 INFO L78 Accepts]: Start accepts. Automaton has 442808 states and 457001 transitions. Word has length 1102 [2021-12-07 01:35:56,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:35:56,459 INFO L470 AbstractCegarLoop]: Abstraction has 442808 states and 457001 transitions. [2021-12-07 01:35:56,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:35:56,460 INFO L276 IsEmpty]: Start isEmpty. Operand 442808 states and 457001 transitions. [2021-12-07 01:35:56,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1195 [2021-12-07 01:35:56,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:35:56,512 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:35:56,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-07 01:35:56,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-07 01:35:56,714 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:35:56,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:35:56,716 INFO L85 PathProgramCache]: Analyzing trace with hash 481359713, now seen corresponding path program 1 times [2021-12-07 01:35:56,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:35:56,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309402881] [2021-12-07 01:35:56,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:35:56,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:35:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:35:57,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2624 backedges. 1748 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2021-12-07 01:35:57,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:35:57,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309402881] [2021-12-07 01:35:57,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309402881] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:35:57,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:35:57,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:35:57,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434823116] [2021-12-07 01:35:57,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:35:57,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:35:57,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:35:57,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:35:57,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:35:57,082 INFO L87 Difference]: Start difference. First operand 442808 states and 457001 transitions. Second operand has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:04,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:04,092 INFO L93 Difference]: Finished difference Result 921935 states and 952010 transitions. [2021-12-07 01:36:04,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:36:04,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 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 1194 [2021-12-07 01:36:04,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:04,722 INFO L225 Difference]: With dead ends: 921935 [2021-12-07 01:36:04,722 INFO L226 Difference]: Without dead ends: 499597 [2021-12-07 01:36:04,870 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 [2021-12-07 01:36:04,871 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 873 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 3403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 741 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:04,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 432 Invalid, 3403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [741 Valid, 2662 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-07 01:36:05,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499597 states. [2021-12-07 01:36:09,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499597 to 454617. [2021-12-07 01:36:10,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454617 states, 454616 states have (on average 1.0322887887799814) internal successors, (469295), 454616 states have internal predecessors, (469295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:10,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454617 states to 454617 states and 469295 transitions. [2021-12-07 01:36:10,746 INFO L78 Accepts]: Start accepts. Automaton has 454617 states and 469295 transitions. Word has length 1194 [2021-12-07 01:36:10,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:10,746 INFO L470 AbstractCegarLoop]: Abstraction has 454617 states and 469295 transitions. [2021-12-07 01:36:10,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:10,747 INFO L276 IsEmpty]: Start isEmpty. Operand 454617 states and 469295 transitions. [2021-12-07 01:36:10,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1202 [2021-12-07 01:36:10,804 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:10,805 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:10,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-07 01:36:10,805 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:36:10,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:10,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2070591596, now seen corresponding path program 1 times [2021-12-07 01:36:10,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:10,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083689502] [2021-12-07 01:36:10,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:10,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:11,179 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 704 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-12-07 01:36:11,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:11,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083689502] [2021-12-07 01:36:11,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083689502] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:36:11,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:36:11,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:36:11,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527960160] [2021-12-07 01:36:11,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:36:11,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:36:11,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:11,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:36:11,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:36:11,181 INFO L87 Difference]: Start difference. First operand 454617 states and 469295 transitions. Second operand has 3 states, 3 states have (on average 369.0) internal successors, (1107), 3 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:16,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:16,382 INFO L93 Difference]: Finished difference Result 913975 states and 943743 transitions. [2021-12-07 01:36:16,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:36:16,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 369.0) internal successors, (1107), 3 states have internal predecessors, (1107), 0 states have call successors, (0), 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 1201 [2021-12-07 01:36:16,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:16,959 INFO L225 Difference]: With dead ends: 913975 [2021-12-07 01:36:16,959 INFO L226 Difference]: Without dead ends: 465658 [2021-12-07 01:36:17,109 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 [2021-12-07 01:36:17,109 INFO L933 BasicCegarLoop]: 842 mSDtfsCounter, 357 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 2478 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 2644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 2478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:17,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 956 Invalid, 2644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 2478 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-07 01:36:17,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465658 states. [2021-12-07 01:36:21,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465658 to 460916. [2021-12-07 01:36:22,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460916 states, 460915 states have (on average 1.0310534480327176) internal successors, (475228), 460915 states have internal predecessors, (475228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:22,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460916 states to 460916 states and 475228 transitions. [2021-12-07 01:36:22,525 INFO L78 Accepts]: Start accepts. Automaton has 460916 states and 475228 transitions. Word has length 1201 [2021-12-07 01:36:22,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:22,526 INFO L470 AbstractCegarLoop]: Abstraction has 460916 states and 475228 transitions. [2021-12-07 01:36:22,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 369.0) internal successors, (1107), 3 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:22,527 INFO L276 IsEmpty]: Start isEmpty. Operand 460916 states and 475228 transitions. [2021-12-07 01:36:22,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1208 [2021-12-07 01:36:22,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:22,583 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:22,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-07 01:36:22,583 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:36:22,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:22,584 INFO L85 PathProgramCache]: Analyzing trace with hash 183245922, now seen corresponding path program 1 times [2021-12-07 01:36:22,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:22,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278478142] [2021-12-07 01:36:22,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:22,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:23,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1517 backedges. 712 proven. 201 refuted. 0 times theorem prover too weak. 604 trivial. 0 not checked. [2021-12-07 01:36:23,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:23,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278478142] [2021-12-07 01:36:23,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278478142] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:36:23,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197263241] [2021-12-07 01:36:23,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:23,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:36:23,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:36:23,165 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:36:23,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 01:36:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:23,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 1422 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:36:23,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:36:24,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1517 backedges. 1055 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2021-12-07 01:36:24,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:36:24,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197263241] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:36:24,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:36:24,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-12-07 01:36:24,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721939302] [2021-12-07 01:36:24,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:36:24,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:36:24,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:24,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:36:24,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:36:24,362 INFO L87 Difference]: Start difference. First operand 460916 states and 475228 transitions. Second operand has 4 states, 4 states have (on average 228.25) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:32,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:32,416 INFO L93 Difference]: Finished difference Result 998338 states and 1029461 transitions. [2021-12-07 01:36:32,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:36:32,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 228.25) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 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 1207 [2021-12-07 01:36:32,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:33,004 INFO L225 Difference]: With dead ends: 998338 [2021-12-07 01:36:33,004 INFO L226 Difference]: Without dead ends: 542935 [2021-12-07 01:36:33,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1209 GetRequests, 1205 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:36:33,114 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 1366 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 5490 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 6297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 5490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:33,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1366 Valid, 739 Invalid, 6297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 5490 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-12-07 01:36:33,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542935 states. [2021-12-07 01:36:38,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542935 to 494776. [2021-12-07 01:36:38,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494776 states, 494775 states have (on average 1.0304279723106462) internal successors, (509830), 494775 states have internal predecessors, (509830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:39,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494776 states to 494776 states and 509830 transitions. [2021-12-07 01:36:39,349 INFO L78 Accepts]: Start accepts. Automaton has 494776 states and 509830 transitions. Word has length 1207 [2021-12-07 01:36:39,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:39,350 INFO L470 AbstractCegarLoop]: Abstraction has 494776 states and 509830 transitions. [2021-12-07 01:36:39,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 228.25) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:39,350 INFO L276 IsEmpty]: Start isEmpty. Operand 494776 states and 509830 transitions. [2021-12-07 01:36:39,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1233 [2021-12-07 01:36:39,403 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:39,403 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:39,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 01:36:39,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa66232-44cf-48d5-ab2d-0f5e097772da/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-07 01:36:39,605 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:36:39,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:39,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1928250962, now seen corresponding path program 1 times [2021-12-07 01:36:39,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:39,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155992256] [2021-12-07 01:36:39,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:39,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:39,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2732 backedges. 1966 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2021-12-07 01:36:39,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:39,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155992256] [2021-12-07 01:36:39,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155992256] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:36:39,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:36:39,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:36:39,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8007015] [2021-12-07 01:36:39,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:36:39,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:36:39,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:39,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:36:39,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:36:39,988 INFO L87 Difference]: Start difference. First operand 494776 states and 509830 transitions. Second operand has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:45,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:45,158 INFO L93 Difference]: Finished difference Result 995103 states and 1025900 transitions. [2021-12-07 01:36:45,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:36:45,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 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 1232 [2021-12-07 01:36:45,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:45,791 INFO L225 Difference]: With dead ends: 995103 [2021-12-07 01:36:45,791 INFO L226 Difference]: Without dead ends: 519223 [2021-12-07 01:36:45,936 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 [2021-12-07 01:36:45,937 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 687 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 2727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:45,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 841 Invalid, 2727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-07 01:36:46,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519223 states. [2021-12-07 01:36:51,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519223 to 508947. [2021-12-07 01:36:51,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508947 states, 508946 states have (on average 1.0300149721188496) internal successors, (524222), 508946 states have internal predecessors, (524222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508947 states to 508947 states and 524222 transitions. [2021-12-07 01:36:51,951 INFO L78 Accepts]: Start accepts. Automaton has 508947 states and 524222 transitions. Word has length 1232 [2021-12-07 01:36:51,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:51,952 INFO L470 AbstractCegarLoop]: Abstraction has 508947 states and 524222 transitions. [2021-12-07 01:36:51,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:51,952 INFO L276 IsEmpty]: Start isEmpty. Operand 508947 states and 524222 transitions. [2021-12-07 01:36:52,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1246 [2021-12-07 01:36:52,007 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:52,008 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:52,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-07 01:36:52,008 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:36:52,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:52,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1931248278, now seen corresponding path program 1 times [2021-12-07 01:36:52,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:52,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143842311] [2021-12-07 01:36:52,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:52,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:52,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2766 backedges. 1986 proven. 0 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2021-12-07 01:36:52,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:52,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143842311] [2021-12-07 01:36:52,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143842311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:36:52,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:36:52,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:36:52,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498755258] [2021-12-07 01:36:52,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:36:52,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:36:52,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:52,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:36:52,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:36:52,630 INFO L87 Difference]: Start difference. First operand 508947 states and 524222 transitions. Second operand has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)