./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8 --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 065397af3cd6d10649fc8ba37687b2a2b7dcb462be78997de981751c3e212e90 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:19:00,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:19:00,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:19:00,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:19:00,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:19:00,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:19:00,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:19:00,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:19:00,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:19:00,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:19:00,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:19:00,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:19:00,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:19:00,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:19:00,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:19:00,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:19:00,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:19:00,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:19:00,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:19:00,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:19:00,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:19:00,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:19:00,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:19:00,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:19:00,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:19:00,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:19:00,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:19:00,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:19:00,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:19:00,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:19:00,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:19:00,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:19:00,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:19:00,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:19:00,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:19:00,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:19:00,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:19:00,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:19:00,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:19:00,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:19:00,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:19:00,620 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 13:19:00,641 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:19:00,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:19:00,641 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:19:00,642 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:19:00,642 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:19:00,642 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:19:00,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:19:00,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:19:00,643 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:19:00,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:19:00,644 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:19:00,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:19:00,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:19:00,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:19:00,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:19:00,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:19:00,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:19:00,645 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:19:00,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:19:00,645 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:19:00,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:19:00,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:19:00,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:19:00,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:19:00,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:19:00,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:19:00,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:19:00,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:19:00,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:19:00,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:19:00,646 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:19:00,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:19:00,646 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:19:00,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:19:00,647 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:19:00,647 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 065397af3cd6d10649fc8ba37687b2a2b7dcb462be78997de981751c3e212e90 [2022-12-13 13:19:00,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:19:00,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:19:00,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:19:00,871 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:19:00,871 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:19:00,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-12-13 13:19:03,613 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:19:03,761 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:19:03,761 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-12-13 13:19:03,767 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8/data/091321758/5b86281e11c8454c8159af312e93f2c9/FLAG4731d6cb5 [2022-12-13 13:19:03,778 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8/data/091321758/5b86281e11c8454c8159af312e93f2c9 [2022-12-13 13:19:03,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:19:03,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:19:03,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:19:03,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:19:03,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:19:03,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:19:03" (1/1) ... [2022-12-13 13:19:03,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@387a8ed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:03, skipping insertion in model container [2022-12-13 13:19:03,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:19:03" (1/1) ... [2022-12-13 13:19:03,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:19:03,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:19:03,941 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5339,5352] [2022-12-13 13:19:03,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:19:03,969 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:19:03,993 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[5339,5352] [2022-12-13 13:19:04,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:19:04,018 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:19:04,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04 WrapperNode [2022-12-13 13:19:04,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:19:04,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:19:04,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:19:04,019 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:19:04,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,049 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 427 [2022-12-13 13:19:04,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:19:04,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:19:04,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:19:04,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:19:04,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,068 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:19:04,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:19:04,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:19:04,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:19:04,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:19:04,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:04,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:19:04,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:19:04,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:19:04,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:19:04,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:19:04,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:19:04,224 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:19:04,225 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:19:04,573 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:19:04,581 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:19:04,581 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 13:19:04,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:19:04 BoogieIcfgContainer [2022-12-13 13:19:04,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:19:04,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:19:04,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:19:04,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:19:04,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:19:03" (1/3) ... [2022-12-13 13:19:04,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0e29de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:19:04, skipping insertion in model container [2022-12-13 13:19:04,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (2/3) ... [2022-12-13 13:19:04,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0e29de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:19:04, skipping insertion in model container [2022-12-13 13:19:04,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:19:04" (3/3) ... [2022-12-13 13:19:04,592 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2022-12-13 13:19:04,611 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:19:04,611 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:19:04,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:19:04,660 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2cacde8b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:19:04,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 13:19:04,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 108 states have (on average 1.6944444444444444) internal successors, (183), 109 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:04,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-13 13:19:04,669 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:04,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:04,670 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:04,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:04,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1289871298, now seen corresponding path program 1 times [2022-12-13 13:19:04,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:04,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094158249] [2022-12-13 13:19:04,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:04,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:04,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:04,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:04,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094158249] [2022-12-13 13:19:04,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094158249] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:19:04,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:19:04,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:19:04,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309447783] [2022-12-13 13:19:04,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:19:04,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:19:04,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:04,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:19:04,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:19:04,936 INFO L87 Difference]: Start difference. First operand has 110 states, 108 states have (on average 1.6944444444444444) internal successors, (183), 109 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:04,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:04,993 INFO L93 Difference]: Finished difference Result 260 states and 419 transitions. [2022-12-13 13:19:04,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:19:04,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-12-13 13:19:04,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:05,002 INFO L225 Difference]: With dead ends: 260 [2022-12-13 13:19:05,002 INFO L226 Difference]: Without dead ends: 171 [2022-12-13 13:19:05,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:19:05,007 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 137 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:05,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 401 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:19:05,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-12-13 13:19:05,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2022-12-13 13:19:05,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.505952380952381) internal successors, (253), 168 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 253 transitions. [2022-12-13 13:19:05,046 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 253 transitions. Word has length 48 [2022-12-13 13:19:05,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:05,047 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 253 transitions. [2022-12-13 13:19:05,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,047 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 253 transitions. [2022-12-13 13:19:05,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-13 13:19:05,048 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:05,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:05,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:19:05,048 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:05,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:05,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1971653998, now seen corresponding path program 1 times [2022-12-13 13:19:05,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:05,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674865564] [2022-12-13 13:19:05,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:05,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:05,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:05,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:05,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674865564] [2022-12-13 13:19:05,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674865564] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:19:05,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:19:05,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:19:05,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128053160] [2022-12-13 13:19:05,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:19:05,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:19:05,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:05,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:19:05,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:19:05,139 INFO L87 Difference]: Start difference. First operand 169 states and 253 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:05,189 INFO L93 Difference]: Finished difference Result 421 states and 653 transitions. [2022-12-13 13:19:05,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:19:05,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-12-13 13:19:05,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:05,191 INFO L225 Difference]: With dead ends: 421 [2022-12-13 13:19:05,191 INFO L226 Difference]: Without dead ends: 279 [2022-12-13 13:19:05,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:19:05,192 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 110 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:05,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 348 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:19:05,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-12-13 13:19:05,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 277. [2022-12-13 13:19:05,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.536231884057971) internal successors, (424), 276 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 424 transitions. [2022-12-13 13:19:05,221 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 424 transitions. Word has length 49 [2022-12-13 13:19:05,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:05,221 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 424 transitions. [2022-12-13 13:19:05,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,221 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 424 transitions. [2022-12-13 13:19:05,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-13 13:19:05,222 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:05,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:05,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:19:05,223 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:05,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:05,223 INFO L85 PathProgramCache]: Analyzing trace with hash 663495285, now seen corresponding path program 1 times [2022-12-13 13:19:05,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:05,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258575931] [2022-12-13 13:19:05,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:05,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:05,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:05,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:05,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258575931] [2022-12-13 13:19:05,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258575931] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:19:05,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:19:05,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:19:05,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705745852] [2022-12-13 13:19:05,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:19:05,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:19:05,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:05,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:19:05,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:19:05,305 INFO L87 Difference]: Start difference. First operand 277 states and 424 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:05,348 INFO L93 Difference]: Finished difference Result 713 states and 1114 transitions. [2022-12-13 13:19:05,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:19:05,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2022-12-13 13:19:05,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:05,352 INFO L225 Difference]: With dead ends: 713 [2022-12-13 13:19:05,352 INFO L226 Difference]: Without dead ends: 463 [2022-12-13 13:19:05,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:19:05,354 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 105 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:05,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 333 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:19:05,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-12-13 13:19:05,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 461. [2022-12-13 13:19:05,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.5478260869565217) internal successors, (712), 460 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 712 transitions. [2022-12-13 13:19:05,389 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 712 transitions. Word has length 50 [2022-12-13 13:19:05,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:05,389 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 712 transitions. [2022-12-13 13:19:05,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,390 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 712 transitions. [2022-12-13 13:19:05,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-13 13:19:05,390 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:05,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:05,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:19:05,391 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:05,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:05,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1706895887, now seen corresponding path program 1 times [2022-12-13 13:19:05,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:05,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081282377] [2022-12-13 13:19:05,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:05,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:05,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:05,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081282377] [2022-12-13 13:19:05,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081282377] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:19:05,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:19:05,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:19:05,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640272081] [2022-12-13 13:19:05,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:19:05,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:19:05,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:05,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:19:05,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:19:05,449 INFO L87 Difference]: Start difference. First operand 461 states and 712 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2022-12-13 13:19:05,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:05,512 INFO L93 Difference]: Finished difference Result 1201 states and 1874 transitions. [2022-12-13 13:19:05,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:19:05,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 [2022-12-13 13:19:05,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:05,514 INFO L225 Difference]: With dead ends: 1201 [2022-12-13 13:19:05,514 INFO L226 Difference]: Without dead ends: 767 [2022-12-13 13:19:05,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:19:05,516 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 100 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:05,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 318 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:19:05,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-12-13 13:19:05,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 765. [2022-12-13 13:19:05,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 764 states have (on average 1.544502617801047) internal successors, (1180), 764 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1180 transitions. [2022-12-13 13:19:05,580 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1180 transitions. Word has length 51 [2022-12-13 13:19:05,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:05,581 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 1180 transitions. [2022-12-13 13:19:05,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2022-12-13 13:19:05,581 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1180 transitions. [2022-12-13 13:19:05,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-13 13:19:05,581 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:05,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:05,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:19:05,582 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:05,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:05,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1133800764, now seen corresponding path program 1 times [2022-12-13 13:19:05,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:05,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836798740] [2022-12-13 13:19:05,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:05,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:05,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:05,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:05,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836798740] [2022-12-13 13:19:05,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836798740] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:19:05,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:19:05,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:19:05,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749151598] [2022-12-13 13:19:05,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:19:05,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:19:05,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:05,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:19:05,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:19:05,698 INFO L87 Difference]: Start difference. First operand 765 states and 1180 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:06,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:06,047 INFO L93 Difference]: Finished difference Result 4455 states and 6945 transitions. [2022-12-13 13:19:06,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:19:06,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-12-13 13:19:06,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:06,059 INFO L225 Difference]: With dead ends: 4455 [2022-12-13 13:19:06,059 INFO L226 Difference]: Without dead ends: 3717 [2022-12-13 13:19:06,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:19:06,067 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 904 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:06,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 1080 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:19:06,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3717 states. [2022-12-13 13:19:06,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3717 to 1501. [2022-12-13 13:19:06,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 1500 states have (on average 1.5333333333333334) internal successors, (2300), 1500 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:06,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 2300 transitions. [2022-12-13 13:19:06,206 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 2300 transitions. Word has length 52 [2022-12-13 13:19:06,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:06,206 INFO L495 AbstractCegarLoop]: Abstraction has 1501 states and 2300 transitions. [2022-12-13 13:19:06,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:06,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 2300 transitions. [2022-12-13 13:19:06,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-13 13:19:06,207 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:06,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:06,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:19:06,208 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:06,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:06,208 INFO L85 PathProgramCache]: Analyzing trace with hash 768629036, now seen corresponding path program 1 times [2022-12-13 13:19:06,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:06,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219953128] [2022-12-13 13:19:06,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:06,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:06,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:06,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:06,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219953128] [2022-12-13 13:19:06,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219953128] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:19:06,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:19:06,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:19:06,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203026203] [2022-12-13 13:19:06,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:19:06,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:19:06,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:06,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:19:06,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:19:06,344 INFO L87 Difference]: Start difference. First operand 1501 states and 2300 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:06,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:06,925 INFO L93 Difference]: Finished difference Result 6501 states and 9920 transitions. [2022-12-13 13:19:06,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:19:06,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-12-13 13:19:06,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:06,936 INFO L225 Difference]: With dead ends: 6501 [2022-12-13 13:19:06,936 INFO L226 Difference]: Without dead ends: 5027 [2022-12-13 13:19:06,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:19:06,939 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 417 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:06,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 833 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:19:06,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5027 states. [2022-12-13 13:19:07,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5027 to 5021. [2022-12-13 13:19:07,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5021 states, 5020 states have (on average 1.5163346613545816) internal successors, (7612), 5020 states have internal predecessors, (7612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:07,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 7612 transitions. [2022-12-13 13:19:07,420 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 7612 transitions. Word has length 53 [2022-12-13 13:19:07,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:07,420 INFO L495 AbstractCegarLoop]: Abstraction has 5021 states and 7612 transitions. [2022-12-13 13:19:07,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:07,420 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 7612 transitions. [2022-12-13 13:19:07,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-13 13:19:07,421 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:07,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:07,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 13:19:07,422 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:07,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:07,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1792030237, now seen corresponding path program 1 times [2022-12-13 13:19:07,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:07,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735884853] [2022-12-13 13:19:07,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:07,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:07,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:07,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:07,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735884853] [2022-12-13 13:19:07,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735884853] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:19:07,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:19:07,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:19:07,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331754405] [2022-12-13 13:19:07,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:19:07,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:19:07,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:07,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:19:07,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:19:07,515 INFO L87 Difference]: Start difference. First operand 5021 states and 7612 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:08,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:08,722 INFO L93 Difference]: Finished difference Result 15009 states and 22782 transitions. [2022-12-13 13:19:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:19:08,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-12-13 13:19:08,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:08,744 INFO L225 Difference]: With dead ends: 15009 [2022-12-13 13:19:08,744 INFO L226 Difference]: Without dead ends: 10015 [2022-12-13 13:19:08,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:19:08,750 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 667 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:08,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 171 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:19:08,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10015 states. [2022-12-13 13:19:09,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10015 to 10013. [2022-12-13 13:19:09,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10013 states, 10012 states have (on average 1.5065920894926088) internal successors, (15084), 10012 states have internal predecessors, (15084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:09,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10013 states to 10013 states and 15084 transitions. [2022-12-13 13:19:09,837 INFO L78 Accepts]: Start accepts. Automaton has 10013 states and 15084 transitions. Word has length 55 [2022-12-13 13:19:09,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:09,838 INFO L495 AbstractCegarLoop]: Abstraction has 10013 states and 15084 transitions. [2022-12-13 13:19:09,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:09,838 INFO L276 IsEmpty]: Start isEmpty. Operand 10013 states and 15084 transitions. [2022-12-13 13:19:09,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-13 13:19:09,839 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:09,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:09,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 13:19:09,840 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:09,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:09,840 INFO L85 PathProgramCache]: Analyzing trace with hash -22058530, now seen corresponding path program 1 times [2022-12-13 13:19:09,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:09,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720413881] [2022-12-13 13:19:09,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:09,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:10,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:10,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:10,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720413881] [2022-12-13 13:19:10,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720413881] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:19:10,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:19:10,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:19:10,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464700542] [2022-12-13 13:19:10,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:19:10,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:19:10,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:10,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:19:10,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:19:10,011 INFO L87 Difference]: Start difference. First operand 10013 states and 15084 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:12,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:12,116 INFO L93 Difference]: Finished difference Result 20511 states and 30653 transitions. [2022-12-13 13:19:12,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:19:12,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-12-13 13:19:12,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:12,152 INFO L225 Difference]: With dead ends: 20511 [2022-12-13 13:19:12,152 INFO L226 Difference]: Without dead ends: 20509 [2022-12-13 13:19:12,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:19:12,156 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 242 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:12,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 753 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:19:12,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20509 states. [2022-12-13 13:19:13,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20509 to 10525. [2022-12-13 13:19:13,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10525 states, 10524 states have (on average 1.4819460281261878) internal successors, (15596), 10524 states have internal predecessors, (15596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:13,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10525 states to 10525 states and 15596 transitions. [2022-12-13 13:19:13,306 INFO L78 Accepts]: Start accepts. Automaton has 10525 states and 15596 transitions. Word has length 55 [2022-12-13 13:19:13,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:13,306 INFO L495 AbstractCegarLoop]: Abstraction has 10525 states and 15596 transitions. [2022-12-13 13:19:13,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:13,306 INFO L276 IsEmpty]: Start isEmpty. Operand 10525 states and 15596 transitions. [2022-12-13 13:19:13,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 13:19:13,307 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:13,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:13,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 13:19:13,307 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:13,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:13,307 INFO L85 PathProgramCache]: Analyzing trace with hash -673241382, now seen corresponding path program 1 times [2022-12-13 13:19:13,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:13,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354053260] [2022-12-13 13:19:13,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:13,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:13,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:13,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:13,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354053260] [2022-12-13 13:19:13,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354053260] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:19:13,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:19:13,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:19:13,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788306096] [2022-12-13 13:19:13,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:19:13,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:19:13,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:13,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:19:13,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:19:13,341 INFO L87 Difference]: Start difference. First operand 10525 states and 15596 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:14,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:14,761 INFO L93 Difference]: Finished difference Result 23387 states and 34588 transitions. [2022-12-13 13:19:14,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:19:14,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-12-13 13:19:14,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:14,783 INFO L225 Difference]: With dead ends: 23387 [2022-12-13 13:19:14,784 INFO L226 Difference]: Without dead ends: 12889 [2022-12-13 13:19:14,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:19:14,793 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 88 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:14,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 309 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:19:14,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12889 states. [2022-12-13 13:19:16,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12889 to 12887. [2022-12-13 13:19:16,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12887 states, 12886 states have (on average 1.4715194785038026) internal successors, (18962), 12886 states have internal predecessors, (18962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:16,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12887 states to 12887 states and 18962 transitions. [2022-12-13 13:19:16,238 INFO L78 Accepts]: Start accepts. Automaton has 12887 states and 18962 transitions. Word has length 56 [2022-12-13 13:19:16,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:16,238 INFO L495 AbstractCegarLoop]: Abstraction has 12887 states and 18962 transitions. [2022-12-13 13:19:16,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:16,238 INFO L276 IsEmpty]: Start isEmpty. Operand 12887 states and 18962 transitions. [2022-12-13 13:19:16,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 13:19:16,241 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:16,242 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:16,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 13:19:16,242 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:16,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:16,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1821600213, now seen corresponding path program 1 times [2022-12-13 13:19:16,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:16,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750779762] [2022-12-13 13:19:16,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:16,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:19:16,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:16,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750779762] [2022-12-13 13:19:16,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750779762] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:19:16,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575997222] [2022-12-13 13:19:16,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:16,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:16,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:16,339 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:19:16,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:19:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:16,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 13:19:16,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:19:16,561 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:19:16,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:19:16,845 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:19:16,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575997222] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:19:16,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:19:16,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2022-12-13 13:19:16,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75663098] [2022-12-13 13:19:16,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:19:16,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:19:16,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:16,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:19:16,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:19:16,846 INFO L87 Difference]: Start difference. First operand 12887 states and 18962 transitions. Second operand has 9 states, 9 states have (on average 24.0) internal successors, (216), 9 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:21,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:21,790 INFO L93 Difference]: Finished difference Result 53263 states and 78751 transitions. [2022-12-13 13:19:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:19:21,790 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 24.0) internal successors, (216), 9 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-12-13 13:19:21,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:21,841 INFO L225 Difference]: With dead ends: 53263 [2022-12-13 13:19:21,841 INFO L226 Difference]: Without dead ends: 42765 [2022-12-13 13:19:21,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:19:21,855 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 958 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:21,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 1172 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:19:21,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42765 states. [2022-12-13 13:19:26,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42765 to 41727. [2022-12-13 13:19:26,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41727 states, 41726 states have (on average 1.4602406173608782) internal successors, (60930), 41726 states have internal predecessors, (60930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:26,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41727 states to 41727 states and 60930 transitions. [2022-12-13 13:19:26,905 INFO L78 Accepts]: Start accepts. Automaton has 41727 states and 60930 transitions. Word has length 77 [2022-12-13 13:19:26,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:26,905 INFO L495 AbstractCegarLoop]: Abstraction has 41727 states and 60930 transitions. [2022-12-13 13:19:26,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.0) internal successors, (216), 9 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:26,905 INFO L276 IsEmpty]: Start isEmpty. Operand 41727 states and 60930 transitions. [2022-12-13 13:19:26,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-13 13:19:26,909 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:26,909 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 13:19:26,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:19:27,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 13:19:27,110 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:27,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:27,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1365606455, now seen corresponding path program 1 times [2022-12-13 13:19:27,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:27,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535152437] [2022-12-13 13:19:27,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:27,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:27,162 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:27,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:27,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535152437] [2022-12-13 13:19:27,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535152437] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:19:27,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:19:27,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:19:27,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587845324] [2022-12-13 13:19:27,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:19:27,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:19:27,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:27,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:19:27,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:19:27,164 INFO L87 Difference]: Start difference. First operand 41727 states and 60930 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:34,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:34,962 INFO L93 Difference]: Finished difference Result 99120 states and 144476 transitions. [2022-12-13 13:19:34,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:19:34,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-12-13 13:19:34,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:35,056 INFO L225 Difference]: With dead ends: 99120 [2022-12-13 13:19:35,056 INFO L226 Difference]: Without dead ends: 65926 [2022-12-13 13:19:35,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:19:35,084 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 90 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:35,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 311 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:19:35,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65926 states. [2022-12-13 13:19:42,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65926 to 63020. [2022-12-13 13:19:42,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63020 states, 63019 states have (on average 1.4428664371062696) internal successors, (90928), 63019 states have internal predecessors, (90928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:43,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63020 states to 63020 states and 90928 transitions. [2022-12-13 13:19:43,108 INFO L78 Accepts]: Start accepts. Automaton has 63020 states and 90928 transitions. Word has length 78 [2022-12-13 13:19:43,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:43,108 INFO L495 AbstractCegarLoop]: Abstraction has 63020 states and 90928 transitions. [2022-12-13 13:19:43,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:43,109 INFO L276 IsEmpty]: Start isEmpty. Operand 63020 states and 90928 transitions. [2022-12-13 13:19:43,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-13 13:19:43,115 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:43,115 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 13:19:43,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 13:19:43,116 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:43,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:43,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1977851660, now seen corresponding path program 1 times [2022-12-13 13:19:43,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:43,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387592129] [2022-12-13 13:19:43,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:43,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:43,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:43,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387592129] [2022-12-13 13:19:43,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387592129] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:19:43,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:19:43,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:19:43,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134010877] [2022-12-13 13:19:43,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:19:43,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:19:43,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:43,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:19:43,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:19:43,164 INFO L87 Difference]: Start difference. First operand 63020 states and 90928 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:53,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:53,639 INFO L93 Difference]: Finished difference Result 132338 states and 190079 transitions. [2022-12-13 13:19:53,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:19:53,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-12-13 13:19:53,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:53,753 INFO L225 Difference]: With dead ends: 132338 [2022-12-13 13:19:53,753 INFO L226 Difference]: Without dead ends: 89440 [2022-12-13 13:19:53,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:19:53,781 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 91 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:53,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 330 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:19:53,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89440 states. [2022-12-13 13:20:04,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89440 to 85606. [2022-12-13 13:20:04,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85606 states, 85605 states have (on average 1.42175106594241) internal successors, (121709), 85605 states have internal predecessors, (121709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:04,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85606 states to 85606 states and 121709 transitions. [2022-12-13 13:20:04,357 INFO L78 Accepts]: Start accepts. Automaton has 85606 states and 121709 transitions. Word has length 78 [2022-12-13 13:20:04,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:20:04,357 INFO L495 AbstractCegarLoop]: Abstraction has 85606 states and 121709 transitions. [2022-12-13 13:20:04,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:04,358 INFO L276 IsEmpty]: Start isEmpty. Operand 85606 states and 121709 transitions. [2022-12-13 13:20:04,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-13 13:20:04,364 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:20:04,364 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 13:20:04,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 13:20:04,364 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:20:04,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:20:04,364 INFO L85 PathProgramCache]: Analyzing trace with hash 440432859, now seen corresponding path program 1 times [2022-12-13 13:20:04,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:20:04,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536389686] [2022-12-13 13:20:04,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:20:04,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:20:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:20:04,400 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:20:04,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:20:04,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536389686] [2022-12-13 13:20:04,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536389686] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:20:04,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:20:04,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:20:04,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214397456] [2022-12-13 13:20:04,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:20:04,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:20:04,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:20:04,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:20:04,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:20:04,402 INFO L87 Difference]: Start difference. First operand 85606 states and 121709 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:16,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:20:16,568 INFO L93 Difference]: Finished difference Result 140509 states and 198554 transitions. [2022-12-13 13:20:16,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:20:16,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-12-13 13:20:16,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:20:16,677 INFO L225 Difference]: With dead ends: 140509 [2022-12-13 13:20:16,678 INFO L226 Difference]: Without dead ends: 88661 [2022-12-13 13:20:16,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:20:16,712 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 92 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:20:16,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 349 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:20:16,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88661 states. [2022-12-13 13:20:27,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88661 to 84284. [2022-12-13 13:20:27,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84284 states, 84283 states have (on average 1.3989772551997437) internal successors, (117910), 84283 states have internal predecessors, (117910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:27,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84284 states to 84284 states and 117910 transitions. [2022-12-13 13:20:27,388 INFO L78 Accepts]: Start accepts. Automaton has 84284 states and 117910 transitions. Word has length 78 [2022-12-13 13:20:27,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:20:27,389 INFO L495 AbstractCegarLoop]: Abstraction has 84284 states and 117910 transitions. [2022-12-13 13:20:27,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:27,389 INFO L276 IsEmpty]: Start isEmpty. Operand 84284 states and 117910 transitions. [2022-12-13 13:20:27,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-13 13:20:27,394 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:20:27,394 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 13:20:27,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 13:20:27,394 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:20:27,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:20:27,395 INFO L85 PathProgramCache]: Analyzing trace with hash -739881820, now seen corresponding path program 1 times [2022-12-13 13:20:27,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:20:27,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681334853] [2022-12-13 13:20:27,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:20:27,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:20:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:20:27,471 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:20:27,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:20:27,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681334853] [2022-12-13 13:20:27,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681334853] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:20:27,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:20:27,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:20:27,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863135260] [2022-12-13 13:20:27,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:20:27,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:20:27,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:20:27,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:20:27,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:20:27,472 INFO L87 Difference]: Start difference. First operand 84284 states and 117910 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:50,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:20:50,522 INFO L93 Difference]: Finished difference Result 201648 states and 284635 transitions. [2022-12-13 13:20:50,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:20:50,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-12-13 13:20:50,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:20:50,754 INFO L225 Difference]: With dead ends: 201648 [2022-12-13 13:20:50,754 INFO L226 Difference]: Without dead ends: 166294 [2022-12-13 13:20:50,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:20:50,787 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 793 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:20:50,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1033 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:20:50,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166294 states. [2022-12-13 13:21:07,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166294 to 112661. [2022-12-13 13:21:07,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112661 states, 112660 states have (on average 1.3940884075980828) internal successors, (157058), 112660 states have internal predecessors, (157058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:07,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112661 states to 112661 states and 157058 transitions. [2022-12-13 13:21:07,743 INFO L78 Accepts]: Start accepts. Automaton has 112661 states and 157058 transitions. Word has length 78 [2022-12-13 13:21:07,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:21:07,743 INFO L495 AbstractCegarLoop]: Abstraction has 112661 states and 157058 transitions. [2022-12-13 13:21:07,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:07,743 INFO L276 IsEmpty]: Start isEmpty. Operand 112661 states and 157058 transitions. [2022-12-13 13:21:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-13 13:21:07,748 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:21:07,749 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 13:21:07,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 13:21:07,749 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:21:07,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:21:07,749 INFO L85 PathProgramCache]: Analyzing trace with hash -542796544, now seen corresponding path program 1 times [2022-12-13 13:21:07,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:21:07,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398402754] [2022-12-13 13:21:07,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:07,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:21:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:07,825 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 13:21:07,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:21:07,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398402754] [2022-12-13 13:21:07,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398402754] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:21:07,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:21:07,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:21:07,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232282940] [2022-12-13 13:21:07,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:21:07,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:21:07,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:21:07,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:21:07,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:21:07,827 INFO L87 Difference]: Start difference. First operand 112661 states and 157058 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:35,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:21:35,260 INFO L93 Difference]: Finished difference Result 233775 states and 329332 transitions. [2022-12-13 13:21:35,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:21:35,261 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-12-13 13:21:35,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:21:35,549 INFO L225 Difference]: With dead ends: 233775 [2022-12-13 13:21:35,549 INFO L226 Difference]: Without dead ends: 195558 [2022-12-13 13:21:35,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:21:35,594 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 794 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:21:35,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 995 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:21:35,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195558 states. [2022-12-13 13:21:57,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195558 to 147639. [2022-12-13 13:21:57,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147639 states, 147638 states have (on average 1.3927579620422927) internal successors, (205624), 147638 states have internal predecessors, (205624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:57,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147639 states to 147639 states and 205624 transitions. [2022-12-13 13:21:57,700 INFO L78 Accepts]: Start accepts. Automaton has 147639 states and 205624 transitions. Word has length 78 [2022-12-13 13:21:57,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:21:57,700 INFO L495 AbstractCegarLoop]: Abstraction has 147639 states and 205624 transitions. [2022-12-13 13:21:57,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:21:57,700 INFO L276 IsEmpty]: Start isEmpty. Operand 147639 states and 205624 transitions. [2022-12-13 13:21:57,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-13 13:21:57,706 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:21:57,706 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 13:21:57,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 13:21:57,707 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:21:57,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:21:57,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1309904988, now seen corresponding path program 1 times [2022-12-13 13:21:57,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:21:57,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979143062] [2022-12-13 13:21:57,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:21:57,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:21:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:21:57,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 13:21:57,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:21:57,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979143062] [2022-12-13 13:21:57,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979143062] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:21:57,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:21:57,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:21:57,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884167542] [2022-12-13 13:21:57,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:21:57,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:21:57,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:21:57,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:21:57,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:21:57,780 INFO L87 Difference]: Start difference. First operand 147639 states and 205624 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:22:31,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:22:31,859 INFO L93 Difference]: Finished difference Result 247796 states and 348297 transitions. [2022-12-13 13:22:31,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:22:31,860 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-12-13 13:22:31,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:22:32,219 INFO L225 Difference]: With dead ends: 247796 [2022-12-13 13:22:32,220 INFO L226 Difference]: Without dead ends: 226482 [2022-12-13 13:22:32,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:22:32,269 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 771 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:22:32,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1035 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:22:32,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226482 states. [2022-12-13 13:22:58,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226482 to 168119. [2022-12-13 13:22:58,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168119 states, 168118 states have (on average 1.3933546675549318) internal successors, (234248), 168118 states have internal predecessors, (234248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:22:58,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168119 states to 168119 states and 234248 transitions. [2022-12-13 13:22:58,518 INFO L78 Accepts]: Start accepts. Automaton has 168119 states and 234248 transitions. Word has length 78 [2022-12-13 13:22:58,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:22:58,519 INFO L495 AbstractCegarLoop]: Abstraction has 168119 states and 234248 transitions. [2022-12-13 13:22:58,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:22:58,519 INFO L276 IsEmpty]: Start isEmpty. Operand 168119 states and 234248 transitions. [2022-12-13 13:22:58,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-13 13:22:58,525 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:22:58,525 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 13:22:58,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 13:22:58,525 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:22:58,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:22:58,526 INFO L85 PathProgramCache]: Analyzing trace with hash 839835956, now seen corresponding path program 1 times [2022-12-13 13:22:58,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:22:58,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845496981] [2022-12-13 13:22:58,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:22:58,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:22:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:22:58,594 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 13:22:58,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:22:58,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845496981] [2022-12-13 13:22:58,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845496981] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:22:58,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:22:58,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:22:58,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137093422] [2022-12-13 13:22:58,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:22:58,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:22:58,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:22:58,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:22:58,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:22:58,596 INFO L87 Difference]: Start difference. First operand 168119 states and 234248 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:23:36,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:23:36,443 INFO L93 Difference]: Finished difference Result 278478 states and 391406 transitions. [2022-12-13 13:23:36,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:23:36,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-12-13 13:23:36,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:23:36,833 INFO L225 Difference]: With dead ends: 278478 [2022-12-13 13:23:36,834 INFO L226 Difference]: Without dead ends: 246533 [2022-12-13 13:23:36,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:23:36,894 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 731 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:23:36,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 1107 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:23:37,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246533 states. [2022-12-13 13:24:06,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246533 to 193719. [2022-12-13 13:24:07,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193719 states, 193718 states have (on average 1.394088313940883) internal successors, (270060), 193718 states have internal predecessors, (270060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:24:07,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193719 states to 193719 states and 270060 transitions. [2022-12-13 13:24:07,370 INFO L78 Accepts]: Start accepts. Automaton has 193719 states and 270060 transitions. Word has length 78 [2022-12-13 13:24:07,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:24:07,371 INFO L495 AbstractCegarLoop]: Abstraction has 193719 states and 270060 transitions. [2022-12-13 13:24:07,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:24:07,371 INFO L276 IsEmpty]: Start isEmpty. Operand 193719 states and 270060 transitions. [2022-12-13 13:24:07,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 13:24:07,379 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:24:07,379 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 13:24:07,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 13:24:07,379 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:24:07,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:24:07,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1258059313, now seen corresponding path program 1 times [2022-12-13 13:24:07,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:24:07,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880939890] [2022-12-13 13:24:07,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:24:07,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:24:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:24:07,528 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:24:07,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:24:07,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880939890] [2022-12-13 13:24:07,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880939890] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:24:07,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:24:07,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:24:07,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580226669] [2022-12-13 13:24:07,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:24:07,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:24:07,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:24:07,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:24:07,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:24:07,530 INFO L87 Difference]: Start difference. First operand 193719 states and 270060 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:25:01,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:25:01,523 INFO L93 Difference]: Finished difference Result 533296 states and 741632 transitions. [2022-12-13 13:25:01,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:25:01,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-12-13 13:25:01,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:25:02,092 INFO L225 Difference]: With dead ends: 533296 [2022-12-13 13:25:02,092 INFO L226 Difference]: Without dead ends: 349022 [2022-12-13 13:25:02,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:25:02,235 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 87 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:25:02,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 331 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:25:02,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349022 states. [2022-12-13 13:25:54,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349022 to 333522. [2022-12-13 13:25:55,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333522 states, 333521 states have (on average 1.376348116010686) internal successors, (459041), 333521 states have internal predecessors, (459041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:25:55,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333522 states to 333522 states and 459041 transitions. [2022-12-13 13:25:55,806 INFO L78 Accepts]: Start accepts. Automaton has 333522 states and 459041 transitions. Word has length 81 [2022-12-13 13:25:55,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:25:55,806 INFO L495 AbstractCegarLoop]: Abstraction has 333522 states and 459041 transitions. [2022-12-13 13:25:55,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:25:55,807 INFO L276 IsEmpty]: Start isEmpty. Operand 333522 states and 459041 transitions. [2022-12-13 13:25:55,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-13 13:25:55,820 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:25:55,820 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:25:55,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 13:25:55,821 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:25:55,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:25:55,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1228372865, now seen corresponding path program 1 times [2022-12-13 13:25:55,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:25:55,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901143832] [2022-12-13 13:25:55,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:25:55,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:25:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:25:55,871 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 13:25:55,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:25:55,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901143832] [2022-12-13 13:25:55,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901143832] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:25:55,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:25:55,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:25:55,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616420233] [2022-12-13 13:25:55,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:25:55,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:25:55,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:25:55,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:25:55,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:25:55,873 INFO L87 Difference]: Start difference. First operand 333522 states and 459041 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:27:16,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:27:16,637 INFO L93 Difference]: Finished difference Result 811306 states and 1114204 transitions. [2022-12-13 13:27:16,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:27:16,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-12-13 13:27:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:27:17,465 INFO L225 Difference]: With dead ends: 811306 [2022-12-13 13:27:17,466 INFO L226 Difference]: Without dead ends: 477841 [2022-12-13 13:27:17,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:27:17,699 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 629 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:27:17,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 175 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:27:18,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477841 states. [2022-12-13 13:28:39,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477841 to 475688. [2022-12-13 13:28:39,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475688 states, 475687 states have (on average 1.3627784656717548) internal successors, (648256), 475687 states have internal predecessors, (648256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:40,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475688 states to 475688 states and 648256 transitions. [2022-12-13 13:28:40,355 INFO L78 Accepts]: Start accepts. Automaton has 475688 states and 648256 transitions. Word has length 83 [2022-12-13 13:28:40,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:28:40,355 INFO L495 AbstractCegarLoop]: Abstraction has 475688 states and 648256 transitions. [2022-12-13 13:28:40,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:28:40,356 INFO L276 IsEmpty]: Start isEmpty. Operand 475688 states and 648256 transitions. [2022-12-13 13:28:40,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-13 13:28:40,373 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:28:40,374 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:28:40,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 13:28:40,374 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:28:40,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:28:40,374 INFO L85 PathProgramCache]: Analyzing trace with hash 153040486, now seen corresponding path program 1 times [2022-12-13 13:28:40,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:28:40,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571453349] [2022-12-13 13:28:40,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:40,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:28:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:40,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:28:40,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:28:40,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571453349] [2022-12-13 13:28:40,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571453349] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:28:40,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942255577] [2022-12-13 13:28:40,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:28:40,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:28:40,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:28:40,446 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:28:40,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b73adde9-e17a-4feb-897a-ccbf24649087/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:28:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:28:40,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 13:28:40,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:28:40,891 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:28:40,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:28:40,970 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:28:40,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942255577] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:28:40,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:28:40,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-12-13 13:28:40,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075181061] [2022-12-13 13:28:40,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:28:40,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 13:28:40,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:28:40,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 13:28:40,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-13 13:28:40,972 INFO L87 Difference]: Start difference. First operand 475688 states and 648256 transitions. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 10 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:30:52,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:30:52,829 INFO L93 Difference]: Finished difference Result 1061743 states and 1437558 transitions. [2022-12-13 13:30:52,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 13:30:52,829 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 10 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-12-13 13:30:52,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:30:54,040 INFO L225 Difference]: With dead ends: 1061743 [2022-12-13 13:30:54,041 INFO L226 Difference]: Without dead ends: 673793 [2022-12-13 13:30:54,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 156 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-12-13 13:30:54,391 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 1970 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1970 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:30:54,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1970 Valid, 373 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:30:54,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673793 states.