./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8 --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 0da4165c1f344d998809ceeb47027662b23941f97888207fb29d10aaeaac6d44 --- 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-e04fb08 [2022-11-16 12:40:23,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:40:23,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:40:23,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:40:23,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:40:23,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:40:23,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:40:23,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:40:23,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:40:23,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:40:23,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:40:23,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:40:23,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:40:23,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:40:23,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:40:23,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:40:23,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:40:23,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:40:23,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:40:23,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:40:23,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:40:23,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:40:23,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:40:23,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:40:23,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:40:23,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:40:23,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:40:23,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:40:23,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:40:23,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:40:23,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:40:23,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:40:23,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:40:23,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:40:23,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:40:23,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:40:23,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:40:23,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:40:23,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:40:23,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:40:23,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:40:23,826 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:40:23,862 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:40:23,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:40:23,863 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:40:23,864 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:40:23,864 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:40:23,865 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:40:23,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:40:23,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:40:23,866 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:40:23,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:40:23,867 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:40:23,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:40:23,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:40:23,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:40:23,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:40:23,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:40:23,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:40:23,869 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:40:23,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:40:23,869 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:40:23,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:40:23,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:40:23,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:40:23,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:40:23,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:40:23,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:40:23,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:40:23,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:40:23,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:40:23,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:40:23,872 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:40:23,873 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:40:23,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:40:23,873 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0da4165c1f344d998809ceeb47027662b23941f97888207fb29d10aaeaac6d44 [2022-11-16 12:40:24,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:40:24,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:40:24,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:40:24,211 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:40:24,212 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:40:24,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label08.c [2022-11-16 12:40:24,285 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/data/1ef3d1c80/d7491a1318bf4afe8ce8668d56e03c53/FLAG4b3a38d31 [2022-11-16 12:40:25,257 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:40:25,258 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label08.c [2022-11-16 12:40:25,306 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/data/1ef3d1c80/d7491a1318bf4afe8ce8668d56e03c53/FLAG4b3a38d31 [2022-11-16 12:40:25,713 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/data/1ef3d1c80/d7491a1318bf4afe8ce8668d56e03c53 [2022-11-16 12:40:25,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:40:25,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:40:25,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:40:25,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:40:25,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:40:25,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:40:25" (1/1) ... [2022-11-16 12:40:25,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a78599c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:25, skipping insertion in model container [2022-11-16 12:40:25,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:40:25" (1/1) ... [2022-11-16 12:40:25,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:40:25,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:40:26,225 WARN L229 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_700bc4db-8902-41be-a466-e096fd4c36a1/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label08.c[8616,8629] [2022-11-16 12:40:26,277 WARN L229 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_700bc4db-8902-41be-a466-e096fd4c36a1/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label08.c[12123,12136] [2022-11-16 12:40:27,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:40:27,325 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:40:27,367 WARN L229 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_700bc4db-8902-41be-a466-e096fd4c36a1/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label08.c[8616,8629] [2022-11-16 12:40:27,384 WARN L229 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_700bc4db-8902-41be-a466-e096fd4c36a1/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label08.c[12123,12136] [2022-11-16 12:40:27,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:40:28,032 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:40:28,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:28 WrapperNode [2022-11-16 12:40:28,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:40:28,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:40:28,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:40:28,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:40:28,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:28" (1/1) ... [2022-11-16 12:40:28,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:28" (1/1) ... [2022-11-16 12:40:28,668 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5015 [2022-11-16 12:40:28,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:40:28,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:40:28,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:40:28,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:40:28,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:28" (1/1) ... [2022-11-16 12:40:28,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:28" (1/1) ... [2022-11-16 12:40:28,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:28" (1/1) ... [2022-11-16 12:40:28,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:28" (1/1) ... [2022-11-16 12:40:29,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:28" (1/1) ... [2022-11-16 12:40:29,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:28" (1/1) ... [2022-11-16 12:40:29,153 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:28" (1/1) ... [2022-11-16 12:40:29,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:28" (1/1) ... [2022-11-16 12:40:29,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:40:29,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:40:29,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:40:29,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:40:29,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:28" (1/1) ... [2022-11-16 12:40:29,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:40:29,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:40:29,290 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:40:29,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:40:29,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:40:29,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:40:29,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:40:29,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:40:29,503 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:40:29,506 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:40:35,177 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:40:35,197 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:40:35,197 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:40:35,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:40:35 BoogieIcfgContainer [2022-11-16 12:40:35,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:40:35,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:40:35,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:40:35,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:40:35,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:40:25" (1/3) ... [2022-11-16 12:40:35,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e329a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:40:35, skipping insertion in model container [2022-11-16 12:40:35,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:28" (2/3) ... [2022-11-16 12:40:35,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e329a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:40:35, skipping insertion in model container [2022-11-16 12:40:35,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:40:35" (3/3) ... [2022-11-16 12:40:35,212 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label08.c [2022-11-16 12:40:35,232 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:40:35,233 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:40:35,313 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:40:35,320 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;@50d21900, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:40:35,321 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 12:40:35,329 INFO L276 IsEmpty]: Start isEmpty. Operand has 885 states, 882 states have (on average 1.9058956916099774) internal successors, (1681), 884 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:35,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 12:40:35,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:35,339 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] [2022-11-16 12:40:35,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:35,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:35,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1141430702, now seen corresponding path program 1 times [2022-11-16 12:40:35,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:35,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143147472] [2022-11-16 12:40:35,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:35,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:35,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:35,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:35,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143147472] [2022-11-16 12:40:35,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143147472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:35,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:35,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:40:35,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973952526] [2022-11-16 12:40:35,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:35,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:40:35,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:35,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:40:35,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:40:35,697 INFO L87 Difference]: Start difference. First operand has 885 states, 882 states have (on average 1.9058956916099774) internal successors, (1681), 884 states have internal predecessors, (1681), 0 states have call successors, (0), 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 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:35,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:35,795 INFO L93 Difference]: Finished difference Result 1741 states and 3308 transitions. [2022-11-16 12:40:35,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:40:35,798 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2022-11-16 12:40:35,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:35,816 INFO L225 Difference]: With dead ends: 1741 [2022-11-16 12:40:35,816 INFO L226 Difference]: Without dead ends: 819 [2022-11-16 12:40:35,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:40:35,826 INFO L413 NwaCegarLoop]: 1615 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:35,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:40:35,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-11-16 12:40:35,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2022-11-16 12:40:35,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 817 states have (on average 1.894736842105263) internal successors, (1548), 818 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:35,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1548 transitions. [2022-11-16 12:40:35,955 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1548 transitions. Word has length 22 [2022-11-16 12:40:35,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:35,956 INFO L495 AbstractCegarLoop]: Abstraction has 819 states and 1548 transitions. [2022-11-16 12:40:35,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:35,957 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1548 transitions. [2022-11-16 12:40:35,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 12:40:35,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:35,960 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] [2022-11-16 12:40:35,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:40:35,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:35,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:35,962 INFO L85 PathProgramCache]: Analyzing trace with hash 120362348, now seen corresponding path program 1 times [2022-11-16 12:40:35,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:35,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615881727] [2022-11-16 12:40:35,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:35,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:36,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:36,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615881727] [2022-11-16 12:40:36,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615881727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:36,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:36,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:40:36,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576929273] [2022-11-16 12:40:36,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:36,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:40:36,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:36,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:40:36,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:40:36,241 INFO L87 Difference]: Start difference. First operand 819 states and 1548 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:36,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:36,396 INFO L93 Difference]: Finished difference Result 895 states and 1666 transitions. [2022-11-16 12:40:36,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:40:36,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2022-11-16 12:40:36,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:36,401 INFO L225 Difference]: With dead ends: 895 [2022-11-16 12:40:36,401 INFO L226 Difference]: Without dead ends: 855 [2022-11-16 12:40:36,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:40:36,404 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 59 mSDsluCounter, 4604 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 6148 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:36,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 6148 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:40:36,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-11-16 12:40:36,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 819. [2022-11-16 12:40:36,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 817 states have (on average 1.8665850673194615) internal successors, (1525), 818 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:36,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1525 transitions. [2022-11-16 12:40:36,429 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1525 transitions. Word has length 22 [2022-11-16 12:40:36,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:36,429 INFO L495 AbstractCegarLoop]: Abstraction has 819 states and 1525 transitions. [2022-11-16 12:40:36,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:36,430 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1525 transitions. [2022-11-16 12:40:36,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 12:40:36,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:36,431 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] [2022-11-16 12:40:36,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:40:36,431 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:36,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:36,432 INFO L85 PathProgramCache]: Analyzing trace with hash -930731731, now seen corresponding path program 1 times [2022-11-16 12:40:36,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:36,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917655914] [2022-11-16 12:40:36,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:36,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:36,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:36,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917655914] [2022-11-16 12:40:36,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917655914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:36,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:36,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:40:36,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514401813] [2022-11-16 12:40:36,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:36,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:40:36,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:36,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:40:36,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:36,503 INFO L87 Difference]: Start difference. First operand 819 states and 1525 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:41,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:41,693 INFO L93 Difference]: Finished difference Result 2323 states and 4398 transitions. [2022-11-16 12:40:41,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:40:41,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-11-16 12:40:41,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:41,708 INFO L225 Difference]: With dead ends: 2323 [2022-11-16 12:40:41,708 INFO L226 Difference]: Without dead ends: 1570 [2022-11-16 12:40:41,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:41,715 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 857 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:41,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 561 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-16 12:40:41,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2022-11-16 12:40:41,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1570. [2022-11-16 12:40:41,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1570 states, 1568 states have (on average 1.596938775510204) internal successors, (2504), 1569 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:41,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 2504 transitions. [2022-11-16 12:40:41,762 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 2504 transitions. Word has length 30 [2022-11-16 12:40:41,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:41,762 INFO L495 AbstractCegarLoop]: Abstraction has 1570 states and 2504 transitions. [2022-11-16 12:40:41,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:41,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 2504 transitions. [2022-11-16 12:40:41,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 12:40:41,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:41,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:41,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:40:41,766 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:41,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:41,767 INFO L85 PathProgramCache]: Analyzing trace with hash 550762215, now seen corresponding path program 1 times [2022-11-16 12:40:41,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:41,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862901140] [2022-11-16 12:40:41,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:41,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:41,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:41,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:41,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862901140] [2022-11-16 12:40:41,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862901140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:41,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:41,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:40:41,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021788905] [2022-11-16 12:40:41,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:41,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:40:41,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:41,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:40:41,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:40:41,900 INFO L87 Difference]: Start difference. First operand 1570 states and 2504 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:42,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:42,145 INFO L93 Difference]: Finished difference Result 1858 states and 2960 transitions. [2022-11-16 12:40:42,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:40:42,146 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-11-16 12:40:42,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:42,153 INFO L225 Difference]: With dead ends: 1858 [2022-11-16 12:40:42,153 INFO L226 Difference]: Without dead ends: 1822 [2022-11-16 12:40:42,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:40:42,156 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 6262 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6262 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:42,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6262 Valid, 2187 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:40:42,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2022-11-16 12:40:42,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1604. [2022-11-16 12:40:42,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1602 states have (on average 1.5967540574282146) internal successors, (2558), 1603 states have internal predecessors, (2558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:42,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2558 transitions. [2022-11-16 12:40:42,206 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2558 transitions. Word has length 44 [2022-11-16 12:40:42,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:42,207 INFO L495 AbstractCegarLoop]: Abstraction has 1604 states and 2558 transitions. [2022-11-16 12:40:42,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:42,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2558 transitions. [2022-11-16 12:40:42,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-16 12:40:42,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:42,210 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] [2022-11-16 12:40:42,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:40:42,210 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:42,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:42,211 INFO L85 PathProgramCache]: Analyzing trace with hash -414187945, now seen corresponding path program 1 times [2022-11-16 12:40:42,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:42,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524399108] [2022-11-16 12:40:42,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:42,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:42,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:42,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:42,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524399108] [2022-11-16 12:40:42,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524399108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:42,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:42,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:40:42,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199559320] [2022-11-16 12:40:42,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:42,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:40:42,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:42,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:40:42,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:42,321 INFO L87 Difference]: Start difference. First operand 1604 states and 2558 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:42,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:42,376 INFO L93 Difference]: Finished difference Result 1733 states and 2761 transitions. [2022-11-16 12:40:42,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:40:42,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-11-16 12:40:42,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:42,385 INFO L225 Difference]: With dead ends: 1733 [2022-11-16 12:40:42,385 INFO L226 Difference]: Without dead ends: 1663 [2022-11-16 12:40:42,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:42,390 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 1474 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:42,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1575 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:40:42,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2022-11-16 12:40:42,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1661. [2022-11-16 12:40:42,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1659 states have (on average 1.5949367088607596) internal successors, (2646), 1660 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:42,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2646 transitions. [2022-11-16 12:40:42,449 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2646 transitions. Word has length 46 [2022-11-16 12:40:42,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:42,454 INFO L495 AbstractCegarLoop]: Abstraction has 1661 states and 2646 transitions. [2022-11-16 12:40:42,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:42,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2646 transitions. [2022-11-16 12:40:42,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-16 12:40:42,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:42,464 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] [2022-11-16 12:40:42,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:40:42,466 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:42,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:42,472 INFO L85 PathProgramCache]: Analyzing trace with hash -347694433, now seen corresponding path program 1 times [2022-11-16 12:40:42,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:42,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791966061] [2022-11-16 12:40:42,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:42,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:42,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:42,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791966061] [2022-11-16 12:40:42,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791966061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:42,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:42,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:40:42,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81187016] [2022-11-16 12:40:42,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:42,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:40:42,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:42,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:40:42,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:40:42,737 INFO L87 Difference]: Start difference. First operand 1661 states and 2646 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:42,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:42,882 INFO L93 Difference]: Finished difference Result 1790 states and 2846 transitions. [2022-11-16 12:40:42,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:40:42,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-11-16 12:40:42,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:42,889 INFO L225 Difference]: With dead ends: 1790 [2022-11-16 12:40:42,889 INFO L226 Difference]: Without dead ends: 1663 [2022-11-16 12:40:42,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:40:42,891 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 5996 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5996 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:42,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5996 Valid, 1678 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:40:42,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2022-11-16 12:40:42,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1661. [2022-11-16 12:40:42,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1659 states have (on average 1.5937311633514166) internal successors, (2644), 1660 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:42,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2644 transitions. [2022-11-16 12:40:42,936 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2644 transitions. Word has length 46 [2022-11-16 12:40:42,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:42,937 INFO L495 AbstractCegarLoop]: Abstraction has 1661 states and 2644 transitions. [2022-11-16 12:40:42,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:42,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2644 transitions. [2022-11-16 12:40:42,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 12:40:42,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:42,938 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] [2022-11-16 12:40:42,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:40:42,939 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:42,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:42,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1691651312, now seen corresponding path program 1 times [2022-11-16 12:40:42,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:42,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57366958] [2022-11-16 12:40:42,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:42,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:43,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:43,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57366958] [2022-11-16 12:40:43,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57366958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:43,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:43,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:40:43,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296000910] [2022-11-16 12:40:43,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:43,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:40:43,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:43,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:40:43,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:40:43,118 INFO L87 Difference]: Start difference. First operand 1661 states and 2644 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:43,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:43,218 INFO L93 Difference]: Finished difference Result 1785 states and 2831 transitions. [2022-11-16 12:40:43,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:40:43,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-11-16 12:40:43,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:43,227 INFO L225 Difference]: With dead ends: 1785 [2022-11-16 12:40:43,227 INFO L226 Difference]: Without dead ends: 1783 [2022-11-16 12:40:43,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:40:43,233 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 142 mSDsluCounter, 4577 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 6150 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:43,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 6150 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:40:43,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2022-11-16 12:40:43,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1667. [2022-11-16 12:40:43,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1665 states have (on average 1.590990990990991) internal successors, (2649), 1666 states have internal predecessors, (2649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:43,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2649 transitions. [2022-11-16 12:40:43,289 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2649 transitions. Word has length 47 [2022-11-16 12:40:43,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:43,290 INFO L495 AbstractCegarLoop]: Abstraction has 1667 states and 2649 transitions. [2022-11-16 12:40:43,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:43,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2649 transitions. [2022-11-16 12:40:43,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 12:40:43,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:43,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:43,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:40:43,292 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:43,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:43,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1538886047, now seen corresponding path program 1 times [2022-11-16 12:40:43,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:43,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514756254] [2022-11-16 12:40:43,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:43,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:43,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:43,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:43,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514756254] [2022-11-16 12:40:43,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514756254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:43,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:43,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:40:43,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799727155] [2022-11-16 12:40:43,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:43,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:40:43,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:43,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:40:43,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:43,347 INFO L87 Difference]: Start difference. First operand 1667 states and 2649 transitions. 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) [2022-11-16 12:40:43,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:43,391 INFO L93 Difference]: Finished difference Result 1813 states and 2870 transitions. [2022-11-16 12:40:43,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:40:43,392 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 [2022-11-16 12:40:43,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:43,398 INFO L225 Difference]: With dead ends: 1813 [2022-11-16 12:40:43,398 INFO L226 Difference]: Without dead ends: 1737 [2022-11-16 12:40:43,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:43,400 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 1486 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:43,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1625 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:40:43,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2022-11-16 12:40:43,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1735. [2022-11-16 12:40:43,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1735 states, 1733 states have (on average 1.5868436237738026) internal successors, (2750), 1734 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:43,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 2750 transitions. [2022-11-16 12:40:43,458 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 2750 transitions. Word has length 48 [2022-11-16 12:40:43,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:43,459 INFO L495 AbstractCegarLoop]: Abstraction has 1735 states and 2750 transitions. [2022-11-16 12:40:43,459 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) [2022-11-16 12:40:43,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 2750 transitions. [2022-11-16 12:40:43,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 12:40:43,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:43,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:43,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:40:43,461 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:43,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:43,461 INFO L85 PathProgramCache]: Analyzing trace with hash 561679263, now seen corresponding path program 1 times [2022-11-16 12:40:43,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:43,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776950302] [2022-11-16 12:40:43,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:43,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:43,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:43,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:43,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776950302] [2022-11-16 12:40:43,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776950302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:43,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:43,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:40:43,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208438384] [2022-11-16 12:40:43,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:43,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:40:43,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:43,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:40:43,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:43,537 INFO L87 Difference]: Start difference. First operand 1735 states and 2750 transitions. 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) [2022-11-16 12:40:43,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:43,662 INFO L93 Difference]: Finished difference Result 2109 states and 3310 transitions. [2022-11-16 12:40:43,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:40:43,663 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 [2022-11-16 12:40:43,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:43,669 INFO L225 Difference]: With dead ends: 2109 [2022-11-16 12:40:43,669 INFO L226 Difference]: Without dead ends: 1910 [2022-11-16 12:40:43,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:43,671 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1482 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:43,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1625 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:40:43,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2022-11-16 12:40:43,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1908. [2022-11-16 12:40:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1906 states have (on average 1.5750262329485833) internal successors, (3002), 1907 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:43,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 3002 transitions. [2022-11-16 12:40:43,749 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 3002 transitions. Word has length 48 [2022-11-16 12:40:43,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:43,749 INFO L495 AbstractCegarLoop]: Abstraction has 1908 states and 3002 transitions. [2022-11-16 12:40:43,749 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) [2022-11-16 12:40:43,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 3002 transitions. [2022-11-16 12:40:43,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 12:40:43,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:43,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:43,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:40:43,751 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:43,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:43,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1952355169, now seen corresponding path program 1 times [2022-11-16 12:40:43,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:43,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96047074] [2022-11-16 12:40:43,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:43,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:43,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:43,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:43,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96047074] [2022-11-16 12:40:43,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96047074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:43,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:43,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:40:43,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66627436] [2022-11-16 12:40:43,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:43,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:40:43,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:43,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:40:43,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:43,801 INFO L87 Difference]: Start difference. First operand 1908 states and 3002 transitions. 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) [2022-11-16 12:40:43,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:43,908 INFO L93 Difference]: Finished difference Result 2604 states and 4024 transitions. [2022-11-16 12:40:43,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:40:43,908 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 [2022-11-16 12:40:43,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:43,916 INFO L225 Difference]: With dead ends: 2604 [2022-11-16 12:40:43,916 INFO L226 Difference]: Without dead ends: 2232 [2022-11-16 12:40:43,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:43,919 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 1480 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:43,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:40:43,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2232 states. [2022-11-16 12:40:44,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2232 to 2230. [2022-11-16 12:40:44,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2230 states, 2228 states have (on average 1.552064631956912) internal successors, (3458), 2229 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:44,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 3458 transitions. [2022-11-16 12:40:44,036 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 3458 transitions. Word has length 48 [2022-11-16 12:40:44,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:44,037 INFO L495 AbstractCegarLoop]: Abstraction has 2230 states and 3458 transitions. [2022-11-16 12:40:44,037 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) [2022-11-16 12:40:44,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 3458 transitions. [2022-11-16 12:40:44,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 12:40:44,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:44,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:44,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:40:44,039 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:44,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:44,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1517819233, now seen corresponding path program 1 times [2022-11-16 12:40:44,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:44,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531581641] [2022-11-16 12:40:44,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:44,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:44,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:44,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:44,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531581641] [2022-11-16 12:40:44,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531581641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:44,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:44,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:40:44,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108508235] [2022-11-16 12:40:44,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:44,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:40:44,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:44,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:40:44,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:44,084 INFO L87 Difference]: Start difference. First operand 2230 states and 3458 transitions. 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) [2022-11-16 12:40:44,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:44,266 INFO L93 Difference]: Finished difference Result 3522 states and 5308 transitions. [2022-11-16 12:40:44,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:40:44,267 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 [2022-11-16 12:40:44,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:44,276 INFO L225 Difference]: With dead ends: 3522 [2022-11-16 12:40:44,277 INFO L226 Difference]: Without dead ends: 2828 [2022-11-16 12:40:44,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:44,279 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 1484 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:44,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1631 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:40:44,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2022-11-16 12:40:44,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2826. [2022-11-16 12:40:44,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2826 states, 2824 states have (on average 1.5134560906515582) internal successors, (4274), 2825 states have internal predecessors, (4274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:44,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 4274 transitions. [2022-11-16 12:40:44,490 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 4274 transitions. Word has length 48 [2022-11-16 12:40:44,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:44,491 INFO L495 AbstractCegarLoop]: Abstraction has 2826 states and 4274 transitions. [2022-11-16 12:40:44,491 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) [2022-11-16 12:40:44,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 4274 transitions. [2022-11-16 12:40:44,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:40:44,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:44,493 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:44,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:40:44,494 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:44,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:44,494 INFO L85 PathProgramCache]: Analyzing trace with hash 879514788, now seen corresponding path program 1 times [2022-11-16 12:40:44,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:44,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808836243] [2022-11-16 12:40:44,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:44,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:44,663 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:40:44,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:44,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808836243] [2022-11-16 12:40:44,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808836243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:44,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:44,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:40:44,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100249650] [2022-11-16 12:40:44,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:44,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:40:44,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:44,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:40:44,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:40:44,665 INFO L87 Difference]: Start difference. First operand 2826 states and 4274 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:45,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:45,524 INFO L93 Difference]: Finished difference Result 7916 states and 11463 transitions. [2022-11-16 12:40:45,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:40:45,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 65 [2022-11-16 12:40:45,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:45,549 INFO L225 Difference]: With dead ends: 7916 [2022-11-16 12:40:45,550 INFO L226 Difference]: Without dead ends: 6986 [2022-11-16 12:40:45,553 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 [2022-11-16 12:40:45,554 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 4648 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4648 SdHoareTripleChecker+Valid, 3305 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:45,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4648 Valid, 3305 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:40:45,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6986 states. [2022-11-16 12:40:46,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6986 to 3938. [2022-11-16 12:40:46,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3938 states, 3936 states have (on average 1.4801829268292683) internal successors, (5826), 3937 states have internal predecessors, (5826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:46,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3938 states to 3938 states and 5826 transitions. [2022-11-16 12:40:46,050 INFO L78 Accepts]: Start accepts. Automaton has 3938 states and 5826 transitions. Word has length 65 [2022-11-16 12:40:46,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:46,051 INFO L495 AbstractCegarLoop]: Abstraction has 3938 states and 5826 transitions. [2022-11-16 12:40:46,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:46,051 INFO L276 IsEmpty]: Start isEmpty. Operand 3938 states and 5826 transitions. [2022-11-16 12:40:46,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:40:46,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:46,053 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:46,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:40:46,054 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:46,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:46,054 INFO L85 PathProgramCache]: Analyzing trace with hash -97691996, now seen corresponding path program 1 times [2022-11-16 12:40:46,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:46,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029395006] [2022-11-16 12:40:46,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:46,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:46,177 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:40:46,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:46,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029395006] [2022-11-16 12:40:46,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029395006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:46,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:46,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:40:46,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312106343] [2022-11-16 12:40:46,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:46,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:40:46,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:46,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:40:46,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:40:46,180 INFO L87 Difference]: Start difference. First operand 3938 states and 5826 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:46,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:46,905 INFO L93 Difference]: Finished difference Result 9204 states and 13271 transitions. [2022-11-16 12:40:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:40:46,905 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 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 65 [2022-11-16 12:40:46,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:46,938 INFO L225 Difference]: With dead ends: 9204 [2022-11-16 12:40:46,938 INFO L226 Difference]: Without dead ends: 7914 [2022-11-16 12:40:46,942 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 [2022-11-16 12:40:46,943 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 4684 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4684 SdHoareTripleChecker+Valid, 3323 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:46,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4684 Valid, 3323 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:40:46,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7914 states. [2022-11-16 12:40:47,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7914 to 5690. [2022-11-16 12:40:47,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5690 states, 5688 states have (on average 1.4532348804500703) internal successors, (8266), 5689 states have internal predecessors, (8266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:47,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5690 states to 5690 states and 8266 transitions. [2022-11-16 12:40:47,427 INFO L78 Accepts]: Start accepts. Automaton has 5690 states and 8266 transitions. Word has length 65 [2022-11-16 12:40:47,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:47,427 INFO L495 AbstractCegarLoop]: Abstraction has 5690 states and 8266 transitions. [2022-11-16 12:40:47,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:47,428 INFO L276 IsEmpty]: Start isEmpty. Operand 5690 states and 8266 transitions. [2022-11-16 12:40:47,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:40:47,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:47,430 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:47,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:40:47,431 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:47,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:47,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1683240868, now seen corresponding path program 1 times [2022-11-16 12:40:47,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:47,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853821666] [2022-11-16 12:40:47,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:47,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:47,563 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:40:47,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:47,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853821666] [2022-11-16 12:40:47,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853821666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:47,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:47,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:40:47,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238918738] [2022-11-16 12:40:47,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:47,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:40:47,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:47,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:40:47,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:40:47,566 INFO L87 Difference]: Start difference. First operand 5690 states and 8266 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:48,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:48,363 INFO L93 Difference]: Finished difference Result 10492 states and 15071 transitions. [2022-11-16 12:40:48,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:40:48,364 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 65 [2022-11-16 12:40:48,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:48,383 INFO L225 Difference]: With dead ends: 10492 [2022-11-16 12:40:48,384 INFO L226 Difference]: Without dead ends: 9202 [2022-11-16 12:40:48,388 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 [2022-11-16 12:40:48,389 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 4680 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4680 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:48,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4680 Valid, 3329 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:40:48,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9202 states. [2022-11-16 12:40:49,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9202 to 6978. [2022-11-16 12:40:49,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6978 states, 6976 states have (on average 1.442947247706422) internal successors, (10066), 6977 states have internal predecessors, (10066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:49,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6978 states to 6978 states and 10066 transitions. [2022-11-16 12:40:49,287 INFO L78 Accepts]: Start accepts. Automaton has 6978 states and 10066 transitions. Word has length 65 [2022-11-16 12:40:49,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:49,287 INFO L495 AbstractCegarLoop]: Abstraction has 6978 states and 10066 transitions. [2022-11-16 12:40:49,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:49,288 INFO L276 IsEmpty]: Start isEmpty. Operand 6978 states and 10066 transitions. [2022-11-16 12:40:49,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:40:49,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:49,290 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:49,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:40:49,290 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:49,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:49,291 INFO L85 PathProgramCache]: Analyzing trace with hash 2117776804, now seen corresponding path program 1 times [2022-11-16 12:40:49,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:49,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852100758] [2022-11-16 12:40:49,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:49,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:49,419 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:40:49,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:49,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852100758] [2022-11-16 12:40:49,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852100758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:49,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:49,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:40:49,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431301578] [2022-11-16 12:40:49,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:49,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:40:49,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:49,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:40:49,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:40:49,422 INFO L87 Difference]: Start difference. First operand 6978 states and 10066 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:50,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:50,421 INFO L93 Difference]: Finished difference Result 11780 states and 16871 transitions. [2022-11-16 12:40:50,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:40:50,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 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 65 [2022-11-16 12:40:50,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:50,448 INFO L225 Difference]: With dead ends: 11780 [2022-11-16 12:40:50,448 INFO L226 Difference]: Without dead ends: 10490 [2022-11-16 12:40:50,454 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 [2022-11-16 12:40:50,455 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 4648 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4648 SdHoareTripleChecker+Valid, 3375 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:50,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4648 Valid, 3375 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:40:50,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10490 states. [2022-11-16 12:40:51,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10490 to 8266. [2022-11-16 12:40:51,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8266 states, 8264 states have (on average 1.435866408518877) internal successors, (11866), 8265 states have internal predecessors, (11866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:51,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8266 states to 8266 states and 11866 transitions. [2022-11-16 12:40:51,323 INFO L78 Accepts]: Start accepts. Automaton has 8266 states and 11866 transitions. Word has length 65 [2022-11-16 12:40:51,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:51,323 INFO L495 AbstractCegarLoop]: Abstraction has 8266 states and 11866 transitions. [2022-11-16 12:40:51,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:51,323 INFO L276 IsEmpty]: Start isEmpty. Operand 8266 states and 11866 transitions. [2022-11-16 12:40:51,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 12:40:51,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:51,326 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:51,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:40:51,326 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:51,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:51,327 INFO L85 PathProgramCache]: Analyzing trace with hash -999421060, now seen corresponding path program 1 times [2022-11-16 12:40:51,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:51,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675019474] [2022-11-16 12:40:51,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:51,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:51,419 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:51,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:51,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675019474] [2022-11-16 12:40:51,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675019474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:51,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:51,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:40:51,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407455964] [2022-11-16 12:40:51,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:51,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:40:51,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:51,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:40:51,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:51,422 INFO L87 Difference]: Start difference. First operand 8266 states and 11866 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:52,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:52,259 INFO L93 Difference]: Finished difference Result 14998 states and 21284 transitions. [2022-11-16 12:40:52,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:40:52,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-11-16 12:40:52,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:52,277 INFO L225 Difference]: With dead ends: 14998 [2022-11-16 12:40:52,277 INFO L226 Difference]: Without dead ends: 8268 [2022-11-16 12:40:52,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:52,287 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 37 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:52,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3064 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:40:52,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8268 states. [2022-11-16 12:40:53,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8268 to 8266. [2022-11-16 12:40:53,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8266 states, 8264 states have (on average 1.4208615682478218) internal successors, (11742), 8265 states have internal predecessors, (11742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:53,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8266 states to 8266 states and 11742 transitions. [2022-11-16 12:40:53,351 INFO L78 Accepts]: Start accepts. Automaton has 8266 states and 11742 transitions. Word has length 66 [2022-11-16 12:40:53,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:53,351 INFO L495 AbstractCegarLoop]: Abstraction has 8266 states and 11742 transitions. [2022-11-16 12:40:53,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:53,352 INFO L276 IsEmpty]: Start isEmpty. Operand 8266 states and 11742 transitions. [2022-11-16 12:40:53,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 12:40:53,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:53,354 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:53,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:40:53,354 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:53,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:53,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1980195300, now seen corresponding path program 1 times [2022-11-16 12:40:53,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:53,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96476937] [2022-11-16 12:40:53,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:53,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:53,439 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:53,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:53,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96476937] [2022-11-16 12:40:53,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96476937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:53,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:53,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:40:53,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097810068] [2022-11-16 12:40:53,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:53,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:40:53,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:53,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:40:53,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:53,442 INFO L87 Difference]: Start difference. First operand 8266 states and 11742 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:53,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:53,832 INFO L93 Difference]: Finished difference Result 10839 states and 15326 transitions. [2022-11-16 12:40:53,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:40:53,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-11-16 12:40:53,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:53,840 INFO L225 Difference]: With dead ends: 10839 [2022-11-16 12:40:53,840 INFO L226 Difference]: Without dead ends: 4109 [2022-11-16 12:40:53,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:53,846 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 31 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:53,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3061 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:40:53,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2022-11-16 12:40:54,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 4101. [2022-11-16 12:40:54,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4101 states, 4099 states have (on average 1.4591363747255428) internal successors, (5981), 4100 states have internal predecessors, (5981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:54,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 5981 transitions. [2022-11-16 12:40:54,164 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 5981 transitions. Word has length 67 [2022-11-16 12:40:54,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:54,164 INFO L495 AbstractCegarLoop]: Abstraction has 4101 states and 5981 transitions. [2022-11-16 12:40:54,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:54,165 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 5981 transitions. [2022-11-16 12:40:54,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 12:40:54,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:54,167 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:54,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:40:54,167 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:54,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:54,168 INFO L85 PathProgramCache]: Analyzing trace with hash 823701102, now seen corresponding path program 1 times [2022-11-16 12:40:54,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:54,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998815582] [2022-11-16 12:40:54,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:54,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:54,256 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:54,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:54,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998815582] [2022-11-16 12:40:54,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998815582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:54,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:54,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:40:54,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372313093] [2022-11-16 12:40:54,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:54,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:40:54,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:54,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:40:54,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:54,258 INFO L87 Difference]: Start difference. First operand 4101 states and 5981 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:54,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:54,470 INFO L93 Difference]: Finished difference Result 5381 states and 7743 transitions. [2022-11-16 12:40:54,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:40:54,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-11-16 12:40:54,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:54,475 INFO L225 Difference]: With dead ends: 5381 [2022-11-16 12:40:54,475 INFO L226 Difference]: Without dead ends: 2827 [2022-11-16 12:40:54,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:54,479 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 33 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:54,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3040 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:40:54,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2022-11-16 12:40:54,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2825. [2022-11-16 12:40:54,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2823 states have (on average 1.4874247254693589) internal successors, (4199), 2824 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:54,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 4199 transitions. [2022-11-16 12:40:54,658 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 4199 transitions. Word has length 68 [2022-11-16 12:40:54,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:54,658 INFO L495 AbstractCegarLoop]: Abstraction has 2825 states and 4199 transitions. [2022-11-16 12:40:54,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:54,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 4199 transitions. [2022-11-16 12:40:54,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-16 12:40:54,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:54,659 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:54,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:40:54,659 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:54,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:54,660 INFO L85 PathProgramCache]: Analyzing trace with hash -447735840, now seen corresponding path program 1 times [2022-11-16 12:40:54,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:54,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630639129] [2022-11-16 12:40:54,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:54,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:54,751 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:54,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:54,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630639129] [2022-11-16 12:40:54,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630639129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:54,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:54,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:40:54,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444143903] [2022-11-16 12:40:54,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:54,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:40:54,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:54,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:40:54,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:54,754 INFO L87 Difference]: Start difference. First operand 2825 states and 4199 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:54,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:54,877 INFO L93 Difference]: Finished difference Result 3467 states and 5070 transitions. [2022-11-16 12:40:54,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:40:54,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-11-16 12:40:54,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:54,882 INFO L225 Difference]: With dead ends: 3467 [2022-11-16 12:40:54,882 INFO L226 Difference]: Without dead ends: 2189 [2022-11-16 12:40:54,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:54,885 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 30 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:54,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3025 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:40:54,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2022-11-16 12:40:55,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 2187. [2022-11-16 12:40:55,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2185 states have (on average 1.5189931350114416) internal successors, (3319), 2186 states have internal predecessors, (3319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:55,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3319 transitions. [2022-11-16 12:40:55,007 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3319 transitions. Word has length 70 [2022-11-16 12:40:55,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:55,007 INFO L495 AbstractCegarLoop]: Abstraction has 2187 states and 3319 transitions. [2022-11-16 12:40:55,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:55,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3319 transitions. [2022-11-16 12:40:55,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 12:40:55,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:55,009 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:55,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:40:55,009 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:55,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:55,010 INFO L85 PathProgramCache]: Analyzing trace with hash -164665390, now seen corresponding path program 1 times [2022-11-16 12:40:55,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:55,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611654638] [2022-11-16 12:40:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:55,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:55,196 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:40:55,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:55,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611654638] [2022-11-16 12:40:55,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611654638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:40:55,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911719268] [2022-11-16 12:40:55,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:55,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:40:55,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:40:55,204 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:40:55,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:40:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:55,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:40:55,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:40:55,550 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:40:55,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:40:55,904 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:40:55,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911719268] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:40:55,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:40:55,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2022-11-16 12:40:55,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222441114] [2022-11-16 12:40:55,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:40:55,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:40:55,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:55,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:40:55,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:40:55,907 INFO L87 Difference]: Start difference. First operand 2187 states and 3319 transitions. Second operand has 9 states, 9 states have (on average 19.77777777777778) internal successors, (178), 9 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:56,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:56,329 INFO L93 Difference]: Finished difference Result 3702 states and 5316 transitions. [2022-11-16 12:40:56,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:40:56,329 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.77777777777778) internal successors, (178), 9 states have internal predecessors, (178), 0 states have call successors, (0), 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 72 [2022-11-16 12:40:56,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:56,334 INFO L225 Difference]: With dead ends: 3702 [2022-11-16 12:40:56,334 INFO L226 Difference]: Without dead ends: 3062 [2022-11-16 12:40:56,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:40:56,336 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 3102 mSDsluCounter, 3238 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3102 SdHoareTripleChecker+Valid, 4759 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:56,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3102 Valid, 4759 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:40:56,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2022-11-16 12:40:56,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 2995. [2022-11-16 12:40:56,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2995 states, 2993 states have (on average 1.4447043100567991) internal successors, (4324), 2994 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:56,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 4324 transitions. [2022-11-16 12:40:56,643 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 4324 transitions. Word has length 72 [2022-11-16 12:40:56,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:56,643 INFO L495 AbstractCegarLoop]: Abstraction has 2995 states and 4324 transitions. [2022-11-16 12:40:56,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.77777777777778) internal successors, (178), 9 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:56,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 4324 transitions. [2022-11-16 12:40:56,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 12:40:56,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:56,645 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:56,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:40:56,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:40:56,862 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:56,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:56,863 INFO L85 PathProgramCache]: Analyzing trace with hash -790906490, now seen corresponding path program 1 times [2022-11-16 12:40:56,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:56,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568146883] [2022-11-16 12:40:56,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:56,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:57,510 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:57,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:57,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568146883] [2022-11-16 12:40:57,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568146883] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:40:57,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905433871] [2022-11-16 12:40:57,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:57,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:40:57,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:40:57,513 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:40:57,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:40:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:57,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:40:57,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:40:58,406 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:58,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:40:59,575 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:59,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905433871] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:40:59,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:40:59,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-11-16 12:40:59,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106553822] [2022-11-16 12:40:59,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:40:59,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 12:40:59,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:59,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 12:40:59,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:40:59,577 INFO L87 Difference]: Start difference. First operand 2995 states and 4324 transitions. Second operand has 21 states, 21 states have (on average 7.190476190476191) internal successors, (151), 20 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:01,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:01,113 INFO L93 Difference]: Finished difference Result 6525 states and 8874 transitions. [2022-11-16 12:41:01,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:41:01,113 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.190476190476191) internal successors, (151), 20 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-16 12:41:01,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:01,120 INFO L225 Difference]: With dead ends: 6525 [2022-11-16 12:41:01,120 INFO L226 Difference]: Without dead ends: 5167 [2022-11-16 12:41:01,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:41:01,126 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 13612 mSDsluCounter, 3391 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13612 SdHoareTripleChecker+Valid, 4902 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:01,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13612 Valid, 4902 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:41:01,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5167 states. [2022-11-16 12:41:01,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5167 to 4273. [2022-11-16 12:41:01,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4273 states, 4271 states have (on average 1.3889018965113558) internal successors, (5932), 4272 states have internal predecessors, (5932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:01,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4273 states to 4273 states and 5932 transitions. [2022-11-16 12:41:01,783 INFO L78 Accepts]: Start accepts. Automaton has 4273 states and 5932 transitions. Word has length 73 [2022-11-16 12:41:01,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:01,784 INFO L495 AbstractCegarLoop]: Abstraction has 4273 states and 5932 transitions. [2022-11-16 12:41:01,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.190476190476191) internal successors, (151), 20 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:01,784 INFO L276 IsEmpty]: Start isEmpty. Operand 4273 states and 5932 transitions. [2022-11-16 12:41:01,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 12:41:01,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:01,786 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] [2022-11-16 12:41:01,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:41:01,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-16 12:41:01,991 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:01,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:01,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1677867256, now seen corresponding path program 1 times [2022-11-16 12:41:01,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:01,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218338384] [2022-11-16 12:41:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:01,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:02,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:02,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218338384] [2022-11-16 12:41:02,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218338384] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:02,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282198622] [2022-11-16 12:41:02,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:02,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:02,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:02,419 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:02,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:41:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:02,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 12:41:02,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:03,627 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:03,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:41:05,019 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:05,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282198622] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:41:05,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:41:05,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2022-11-16 12:41:05,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942586736] [2022-11-16 12:41:05,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:41:05,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 12:41:05,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:05,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 12:41:05,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:41:05,023 INFO L87 Difference]: Start difference. First operand 4273 states and 5932 transitions. Second operand has 28 states, 28 states have (on average 6.821428571428571) internal successors, (191), 28 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:08,008 INFO L93 Difference]: Finished difference Result 11729 states and 15325 transitions. [2022-11-16 12:41:08,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 12:41:08,009 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.821428571428571) internal successors, (191), 28 states have internal predecessors, (191), 0 states have call successors, (0), 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 73 [2022-11-16 12:41:08,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:08,021 INFO L225 Difference]: With dead ends: 11729 [2022-11-16 12:41:08,021 INFO L226 Difference]: Without dead ends: 9216 [2022-11-16 12:41:08,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=514, Invalid=1648, Unknown=0, NotChecked=0, Total=2162 [2022-11-16 12:41:08,026 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 18607 mSDsluCounter, 6448 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18607 SdHoareTripleChecker+Valid, 7964 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:08,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18607 Valid, 7964 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:41:08,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9216 states. [2022-11-16 12:41:09,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9216 to 6980. [2022-11-16 12:41:09,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6980 states, 6978 states have (on average 1.3311837202636858) internal successors, (9289), 6979 states have internal predecessors, (9289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:09,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6980 states to 6980 states and 9289 transitions. [2022-11-16 12:41:09,234 INFO L78 Accepts]: Start accepts. Automaton has 6980 states and 9289 transitions. Word has length 73 [2022-11-16 12:41:09,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:09,235 INFO L495 AbstractCegarLoop]: Abstraction has 6980 states and 9289 transitions. [2022-11-16 12:41:09,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.821428571428571) internal successors, (191), 28 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:09,235 INFO L276 IsEmpty]: Start isEmpty. Operand 6980 states and 9289 transitions. [2022-11-16 12:41:09,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 12:41:09,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:09,237 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] [2022-11-16 12:41:09,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 12:41:09,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-16 12:41:09,443 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:09,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:09,443 INFO L85 PathProgramCache]: Analyzing trace with hash -2137928712, now seen corresponding path program 1 times [2022-11-16 12:41:09,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:09,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260083607] [2022-11-16 12:41:09,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:09,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:11,241 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:11,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:11,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260083607] [2022-11-16 12:41:11,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260083607] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:11,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30383786] [2022-11-16 12:41:11,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:11,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:11,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:11,244 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:11,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:41:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:11,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 12:41:11,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:12,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:41:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:13,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30383786] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:41:13,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:41:13,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-11-16 12:41:13,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861721802] [2022-11-16 12:41:13,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:41:13,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:41:13,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:13,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:41:13,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=808, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:41:13,786 INFO L87 Difference]: Start difference. First operand 6980 states and 9289 transitions. Second operand has 32 states, 32 states have (on average 6.28125) internal successors, (201), 32 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:18,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:18,425 INFO L93 Difference]: Finished difference Result 20895 states and 26354 transitions. [2022-11-16 12:41:18,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 12:41:18,426 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.28125) internal successors, (201), 32 states have internal predecessors, (201), 0 states have call successors, (0), 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 73 [2022-11-16 12:41:18,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:18,443 INFO L225 Difference]: With dead ends: 20895 [2022-11-16 12:41:18,443 INFO L226 Difference]: Without dead ends: 16590 [2022-11-16 12:41:18,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=663, Invalid=2093, Unknown=0, NotChecked=0, Total=2756 [2022-11-16 12:41:18,449 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 12731 mSDsluCounter, 6411 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12731 SdHoareTripleChecker+Valid, 7923 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:18,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12731 Valid, 7923 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:41:18,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16590 states. [2022-11-16 12:41:20,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16590 to 12243. [2022-11-16 12:41:20,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12243 states, 12241 states have (on average 1.284045421125725) internal successors, (15718), 12242 states have internal predecessors, (15718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:20,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12243 states to 12243 states and 15718 transitions. [2022-11-16 12:41:20,523 INFO L78 Accepts]: Start accepts. Automaton has 12243 states and 15718 transitions. Word has length 73 [2022-11-16 12:41:20,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:20,524 INFO L495 AbstractCegarLoop]: Abstraction has 12243 states and 15718 transitions. [2022-11-16 12:41:20,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.28125) internal successors, (201), 32 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:20,524 INFO L276 IsEmpty]: Start isEmpty. Operand 12243 states and 15718 transitions. [2022-11-16 12:41:20,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-16 12:41:20,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:20,526 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] [2022-11-16 12:41:20,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:41:20,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:20,732 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:20,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:20,732 INFO L85 PathProgramCache]: Analyzing trace with hash -416241244, now seen corresponding path program 1 times [2022-11-16 12:41:20,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:20,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789315902] [2022-11-16 12:41:20,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:20,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:21,258 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:21,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:21,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789315902] [2022-11-16 12:41:21,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789315902] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:21,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415890663] [2022-11-16 12:41:21,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:21,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:21,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:21,261 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:21,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:41:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:21,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:41:21,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:22,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:41:23,044 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:23,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415890663] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:41:23,044 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:41:23,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-11-16 12:41:23,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635050343] [2022-11-16 12:41:23,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:41:23,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 12:41:23,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:23,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 12:41:23,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:41:23,046 INFO L87 Difference]: Start difference. First operand 12243 states and 15718 transitions. Second operand has 21 states, 21 states have (on average 7.476190476190476) internal successors, (157), 20 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:31,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:31,426 INFO L93 Difference]: Finished difference Result 41566 states and 52376 transitions. [2022-11-16 12:41:31,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:41:31,427 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.476190476190476) internal successors, (157), 20 states have internal predecessors, (157), 0 states have call successors, (0), 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 74 [2022-11-16 12:41:31,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:31,467 INFO L225 Difference]: With dead ends: 41566 [2022-11-16 12:41:31,467 INFO L226 Difference]: Without dead ends: 32405 [2022-11-16 12:41:31,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:41:31,476 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 18668 mSDsluCounter, 4777 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18668 SdHoareTripleChecker+Valid, 6311 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:31,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18668 Valid, 6311 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:41:31,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32405 states. [2022-11-16 12:41:36,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32405 to 22797. [2022-11-16 12:41:36,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22797 states, 22795 states have (on average 1.252116692257074) internal successors, (28542), 22796 states have internal predecessors, (28542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:36,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22797 states to 22797 states and 28542 transitions. [2022-11-16 12:41:36,878 INFO L78 Accepts]: Start accepts. Automaton has 22797 states and 28542 transitions. Word has length 74 [2022-11-16 12:41:36,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:36,878 INFO L495 AbstractCegarLoop]: Abstraction has 22797 states and 28542 transitions. [2022-11-16 12:41:36,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.476190476190476) internal successors, (157), 20 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:36,879 INFO L276 IsEmpty]: Start isEmpty. Operand 22797 states and 28542 transitions. [2022-11-16 12:41:36,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-16 12:41:36,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:36,881 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] [2022-11-16 12:41:36,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:41:37,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 12:41:37,088 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:37,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:37,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1997806360, now seen corresponding path program 1 times [2022-11-16 12:41:37,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:37,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133091801] [2022-11-16 12:41:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:37,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:38,125 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:38,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:38,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133091801] [2022-11-16 12:41:38,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133091801] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:38,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496701080] [2022-11-16 12:41:38,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:38,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:38,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:38,127 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:38,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:41:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:38,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 12:41:38,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:40,014 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:40,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:41:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:41,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496701080] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:41:41,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:41:41,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 14] total 37 [2022-11-16 12:41:41,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963049554] [2022-11-16 12:41:41,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:41:41,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-16 12:41:41,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:41,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-16 12:41:41,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1187, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 12:41:41,847 INFO L87 Difference]: Start difference. First operand 22797 states and 28542 transitions. Second operand has 37 states, 37 states have (on average 5.486486486486487) internal successors, (203), 37 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:40,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:40,914 INFO L93 Difference]: Finished difference Result 73588 states and 89970 transitions. [2022-11-16 12:42:40,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-11-16 12:42:40,914 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.486486486486487) internal successors, (203), 37 states have internal predecessors, (203), 0 states have call successors, (0), 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 75 [2022-11-16 12:42:40,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:40,999 INFO L225 Difference]: With dead ends: 73588 [2022-11-16 12:42:40,999 INFO L226 Difference]: Without dead ends: 64390 [2022-11-16 12:42:41,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24071 ImplicationChecksByTransitivity, 35.1s TimeCoverageRelationStatistics Valid=8666, Invalid=49656, Unknown=0, NotChecked=0, Total=58322 [2022-11-16 12:42:41,024 INFO L413 NwaCegarLoop]: 1738 mSDtfsCounter, 18196 mSDsluCounter, 27330 mSDsCounter, 0 mSdLazyCounter, 2930 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18196 SdHoareTripleChecker+Valid, 29068 SdHoareTripleChecker+Invalid, 3127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 2930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:41,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18196 Valid, 29068 Invalid, 3127 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [197 Valid, 2930 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-16 12:42:41,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64390 states. [2022-11-16 12:42:47,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64390 to 20382. [2022-11-16 12:42:47,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20382 states, 20380 states have (on average 1.254072620215898) internal successors, (25558), 20381 states have internal predecessors, (25558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:47,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20382 states to 20382 states and 25558 transitions. [2022-11-16 12:42:47,432 INFO L78 Accepts]: Start accepts. Automaton has 20382 states and 25558 transitions. Word has length 75 [2022-11-16 12:42:47,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:47,432 INFO L495 AbstractCegarLoop]: Abstraction has 20382 states and 25558 transitions. [2022-11-16 12:42:47,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.486486486486487) internal successors, (203), 37 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:47,433 INFO L276 IsEmpty]: Start isEmpty. Operand 20382 states and 25558 transitions. [2022-11-16 12:42:47,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-16 12:42:47,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:47,435 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] [2022-11-16 12:42:47,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-16 12:42:47,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:47,640 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:42:47,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:47,640 INFO L85 PathProgramCache]: Analyzing trace with hash 19060712, now seen corresponding path program 1 times [2022-11-16 12:42:47,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:47,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425409009] [2022-11-16 12:42:47,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:47,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:48,616 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:48,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:48,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425409009] [2022-11-16 12:42:48,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425409009] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:42:48,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384278753] [2022-11-16 12:42:48,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:48,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:48,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:48,618 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:42:48,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:42:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:48,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-16 12:42:48,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:52,104 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:52,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:42:58,679 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:58,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384278753] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:42:58,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:42:58,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21, 19] total 49 [2022-11-16 12:42:58,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571894896] [2022-11-16 12:42:58,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:42:58,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-16 12:42:58,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:58,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-16 12:42:58,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=2045, Unknown=0, NotChecked=0, Total=2352 [2022-11-16 12:42:58,685 INFO L87 Difference]: Start difference. First operand 20382 states and 25558 transitions. Second operand has 49 states, 49 states have (on average 4.061224489795919) internal successors, (199), 49 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:50,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:45:50,210 INFO L93 Difference]: Finished difference Result 86778 states and 106018 transitions. [2022-11-16 12:45:50,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 262 states. [2022-11-16 12:45:50,210 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.061224489795919) internal successors, (199), 49 states have internal predecessors, (199), 0 states have call successors, (0), 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 75 [2022-11-16 12:45:50,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:45:50,314 INFO L225 Difference]: With dead ends: 86778 [2022-11-16 12:45:50,314 INFO L226 Difference]: Without dead ends: 77058 [2022-11-16 12:45:50,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42270 ImplicationChecksByTransitivity, 126.6s TimeCoverageRelationStatistics Valid=16145, Invalid=79027, Unknown=0, NotChecked=0, Total=95172 [2022-11-16 12:45:50,342 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 18616 mSDsluCounter, 17953 mSDsCounter, 0 mSdLazyCounter, 4625 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18616 SdHoareTripleChecker+Valid, 19500 SdHoareTripleChecker+Invalid, 4788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 4625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:45:50,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18616 Valid, 19500 Invalid, 4788 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [163 Valid, 4625 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-16 12:45:50,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77058 states. [2022-11-16 12:46:02,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77058 to 21055. [2022-11-16 12:46:02,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21055 states, 21053 states have (on average 1.25302807200874) internal successors, (26380), 21054 states have internal predecessors, (26380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:02,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21055 states to 21055 states and 26380 transitions. [2022-11-16 12:46:02,167 INFO L78 Accepts]: Start accepts. Automaton has 21055 states and 26380 transitions. Word has length 75 [2022-11-16 12:46:02,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:46:02,168 INFO L495 AbstractCegarLoop]: Abstraction has 21055 states and 26380 transitions. [2022-11-16 12:46:02,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.061224489795919) internal successors, (199), 49 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:02,168 INFO L276 IsEmpty]: Start isEmpty. Operand 21055 states and 26380 transitions. [2022-11-16 12:46:02,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 12:46:02,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:46:02,171 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:02,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:46:02,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-16 12:46:02,379 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:46:02,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:02,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1754579942, now seen corresponding path program 1 times [2022-11-16 12:46:02,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:02,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623999505] [2022-11-16 12:46:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:02,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:03,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:03,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623999505] [2022-11-16 12:46:03,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623999505] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:46:03,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871559368] [2022-11-16 12:46:03,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:03,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:46:03,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:46:03,433 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:46:03,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:46:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:03,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:46:03,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:46:04,967 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:04,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:46:06,250 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:06,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871559368] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:46:06,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:46:06,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2022-11-16 12:46:06,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321724940] [2022-11-16 12:46:06,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:46:06,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 12:46:06,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:06,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 12:46:06,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2022-11-16 12:46:06,252 INFO L87 Difference]: Start difference. First operand 21055 states and 26380 transitions. Second operand has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:34,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:46:34,353 INFO L93 Difference]: Finished difference Result 49806 states and 61505 transitions. [2022-11-16 12:46:34,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 12:46:34,354 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 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 [2022-11-16 12:46:34,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:46:34,397 INFO L225 Difference]: With dead ends: 49806 [2022-11-16 12:46:34,397 INFO L226 Difference]: Without dead ends: 41564 [2022-11-16 12:46:34,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=666, Invalid=2414, Unknown=0, NotChecked=0, Total=3080 [2022-11-16 12:46:34,407 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 10495 mSDsluCounter, 11274 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10495 SdHoareTripleChecker+Valid, 12843 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:46:34,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10495 Valid, 12843 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 12:46:34,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41564 states. [2022-11-16 12:46:42,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41564 to 17644. [2022-11-16 12:46:42,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17644 states, 17642 states have (on average 1.2570570230132638) internal successors, (22177), 17643 states have internal predecessors, (22177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:42,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17644 states to 17644 states and 22177 transitions. [2022-11-16 12:46:42,791 INFO L78 Accepts]: Start accepts. Automaton has 17644 states and 22177 transitions. Word has length 77 [2022-11-16 12:46:42,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:46:42,791 INFO L495 AbstractCegarLoop]: Abstraction has 17644 states and 22177 transitions. [2022-11-16 12:46:42,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:42,791 INFO L276 IsEmpty]: Start isEmpty. Operand 17644 states and 22177 transitions. [2022-11-16 12:46:42,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 12:46:42,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:46:42,792 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:42,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:46:42,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-16 12:46:42,996 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:46:42,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:42,997 INFO L85 PathProgramCache]: Analyzing trace with hash 823031838, now seen corresponding path program 1 times [2022-11-16 12:46:42,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:42,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966356712] [2022-11-16 12:46:42,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:42,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:44,047 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:44,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:44,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966356712] [2022-11-16 12:46:44,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966356712] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:46:44,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077545862] [2022-11-16 12:46:44,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:44,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:46:44,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:46:44,050 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:46:44,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:46:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:44,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:46:44,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:46:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:46,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:46:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:49,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077545862] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:46:49,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:46:49,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-11-16 12:46:49,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110206503] [2022-11-16 12:46:49,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:46:49,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 12:46:49,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:49,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 12:46:49,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:46:49,338 INFO L87 Difference]: Start difference. First operand 17644 states and 22177 transitions. Second operand has 29 states, 29 states have (on average 6.137931034482759) internal successors, (178), 29 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:06,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:06,873 INFO L93 Difference]: Finished difference Result 27477 states and 34526 transitions. [2022-11-16 12:47:06,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:47:06,874 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.137931034482759) internal successors, (178), 29 states have internal predecessors, (178), 0 states have call successors, (0), 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 [2022-11-16 12:47:06,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:06,893 INFO L225 Difference]: With dead ends: 27477 [2022-11-16 12:47:06,893 INFO L226 Difference]: Without dead ends: 19965 [2022-11-16 12:47:06,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 129 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=375, Invalid=1431, Unknown=0, NotChecked=0, Total=1806 [2022-11-16 12:47:06,898 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 8900 mSDsluCounter, 15054 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8900 SdHoareTripleChecker+Valid, 16573 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:06,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8900 Valid, 16573 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 12:47:06,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19965 states. [2022-11-16 12:47:15,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19965 to 11502. [2022-11-16 12:47:15,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11502 states, 11500 states have (on average 1.2704347826086957) internal successors, (14610), 11501 states have internal predecessors, (14610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:15,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11502 states to 11502 states and 14610 transitions. [2022-11-16 12:47:15,431 INFO L78 Accepts]: Start accepts. Automaton has 11502 states and 14610 transitions. Word has length 77 [2022-11-16 12:47:15,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:15,434 INFO L495 AbstractCegarLoop]: Abstraction has 11502 states and 14610 transitions. [2022-11-16 12:47:15,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.137931034482759) internal successors, (178), 29 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:15,434 INFO L276 IsEmpty]: Start isEmpty. Operand 11502 states and 14610 transitions. [2022-11-16 12:47:15,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-16 12:47:15,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:15,438 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:15,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:47:15,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-16 12:47:15,648 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:15,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:15,649 INFO L85 PathProgramCache]: Analyzing trace with hash -932563493, now seen corresponding path program 1 times [2022-11-16 12:47:15,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:15,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162657314] [2022-11-16 12:47:15,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:15,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:15,945 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:15,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:15,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162657314] [2022-11-16 12:47:15,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162657314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:15,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:15,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:15,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002663229] [2022-11-16 12:47:15,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:15,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:47:15,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:15,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:47:15,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:47:15,949 INFO L87 Difference]: Start difference. First operand 11502 states and 14610 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:27,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:27,029 INFO L93 Difference]: Finished difference Result 13767 states and 18015 transitions. [2022-11-16 12:47:27,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:47:27,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-11-16 12:47:27,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:27,041 INFO L225 Difference]: With dead ends: 13767 [2022-11-16 12:47:27,041 INFO L226 Difference]: Without dead ends: 12263 [2022-11-16 12:47:27,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:47:27,044 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 1451 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:27,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 1817 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-16 12:47:27,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12263 states. [2022-11-16 12:47:33,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12263 to 12253. [2022-11-16 12:47:33,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12253 states, 12251 states have (on average 1.2543465839523305) internal successors, (15367), 12252 states have internal predecessors, (15367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:33,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12253 states to 12253 states and 15367 transitions. [2022-11-16 12:47:33,545 INFO L78 Accepts]: Start accepts. Automaton has 12253 states and 15367 transitions. Word has length 105 [2022-11-16 12:47:33,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:33,545 INFO L495 AbstractCegarLoop]: Abstraction has 12253 states and 15367 transitions. [2022-11-16 12:47:33,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:33,545 INFO L276 IsEmpty]: Start isEmpty. Operand 12253 states and 15367 transitions. [2022-11-16 12:47:33,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-16 12:47:33,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:33,551 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:33,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-16 12:47:33,551 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:33,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:33,552 INFO L85 PathProgramCache]: Analyzing trace with hash -987114242, now seen corresponding path program 1 times [2022-11-16 12:47:33,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:33,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367145313] [2022-11-16 12:47:33,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:33,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:34,621 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 22 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:34,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:34,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367145313] [2022-11-16 12:47:34,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367145313] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:47:34,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382970517] [2022-11-16 12:47:34,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:34,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:47:34,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:47:34,624 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:47:34,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:47:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:34,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 12:47:34,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:47:46,678 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 26 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:46,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:47:50,070 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 22 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:50,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382970517] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:47:50,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:47:50,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 29 [2022-11-16 12:47:50,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389144554] [2022-11-16 12:47:50,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:47:50,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-16 12:47:50,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:50,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-16 12:47:50,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=752, Unknown=4, NotChecked=0, Total=870 [2022-11-16 12:47:50,073 INFO L87 Difference]: Start difference. First operand 12253 states and 15367 transitions. Second operand has 30 states, 30 states have (on average 9.833333333333334) internal successors, (295), 29 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:41,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:50:41,149 INFO L93 Difference]: Finished difference Result 50929 states and 61571 transitions. [2022-11-16 12:50:41,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-16 12:50:41,150 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.833333333333334) internal successors, (295), 29 states have internal predecessors, (295), 0 states have call successors, (0), 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 119 [2022-11-16 12:50:41,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:50:41,217 INFO L225 Difference]: With dead ends: 50929 [2022-11-16 12:50:41,217 INFO L226 Difference]: Without dead ends: 49385 [2022-11-16 12:50:41,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 226 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3495 ImplicationChecksByTransitivity, 125.3s TimeCoverageRelationStatistics Valid=2067, Invalid=9027, Unknown=36, NotChecked=0, Total=11130 [2022-11-16 12:50:41,230 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 13300 mSDsluCounter, 20851 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13300 SdHoareTripleChecker+Valid, 22499 SdHoareTripleChecker+Invalid, 2398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 708 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:50:41,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13300 Valid, 22499 Invalid, 2398 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 1632 Invalid, 0 Unknown, 708 Unchecked, 3.1s Time] [2022-11-16 12:50:41,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49385 states. [2022-11-16 12:51:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49385 to 22362. [2022-11-16 12:51:01,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22362 states, 22360 states have (on average 1.2438282647584973) internal successors, (27812), 22361 states have internal predecessors, (27812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:01,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22362 states to 22362 states and 27812 transitions. [2022-11-16 12:51:01,150 INFO L78 Accepts]: Start accepts. Automaton has 22362 states and 27812 transitions. Word has length 119 [2022-11-16 12:51:01,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:51:01,150 INFO L495 AbstractCegarLoop]: Abstraction has 22362 states and 27812 transitions. [2022-11-16 12:51:01,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.833333333333334) internal successors, (295), 29 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:01,151 INFO L276 IsEmpty]: Start isEmpty. Operand 22362 states and 27812 transitions. [2022-11-16 12:51:01,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-16 12:51:01,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:51:01,157 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:01,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:51:01,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:51:01,363 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:51:01,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:01,364 INFO L85 PathProgramCache]: Analyzing trace with hash -7975568, now seen corresponding path program 1 times [2022-11-16 12:51:01,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:01,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723220447] [2022-11-16 12:51:01,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:01,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:02,441 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:02,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:02,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723220447] [2022-11-16 12:51:02,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723220447] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:51:02,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950110842] [2022-11-16 12:51:02,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:02,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:51:02,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:51:02,443 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:51:02,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700bc4db-8902-41be-a466-e096fd4c36a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:51:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:02,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 12:51:02,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:51:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 48 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:08,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:51:12,494 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 42 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:12,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950110842] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:51:12,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:51:12,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2022-11-16 12:51:12,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365852194] [2022-11-16 12:51:12,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:51:12,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-16 12:51:12,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:12,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-16 12:51:12,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=931, Unknown=1, NotChecked=0, Total=1056 [2022-11-16 12:51:12,497 INFO L87 Difference]: Start difference. First operand 22362 states and 27812 transitions. Second operand has 33 states, 33 states have (on average 9.727272727272727) internal successors, (321), 32 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)