./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9056fc9f-6cf4-4edc-be7a-b815a90b5866/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9056fc9f-6cf4-4edc-be7a-b815a90b5866/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9056fc9f-6cf4-4edc-be7a-b815a90b5866/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9056fc9f-6cf4-4edc-be7a-b815a90b5866/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9056fc9f-6cf4-4edc-be7a-b815a90b5866/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9056fc9f-6cf4-4edc-be7a-b815a90b5866/bin/uautomizer-TMbwUNV5ro --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 1e059282fd5d86931dc4c64c61df508e5e1072350b4f411e7728a201bfba22a1 --- 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-8393723 [2022-11-18 20:35:47,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:35:47,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:35:47,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:35:47,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:35:47,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:35:47,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:35:47,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:35:47,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:35:47,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:35:47,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:35:47,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:35:47,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:35:47,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:35:47,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:35:47,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:35:47,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:35:47,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:35:47,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:35:47,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:35:47,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:35:47,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:35:47,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:35:47,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:35:47,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:35:47,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:35:47,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:35:47,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:35:47,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:35:47,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:35:47,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:35:47,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:35:47,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:35:47,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:35:47,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:35:47,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:35:47,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:35:47,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:35:47,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:35:47,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:35:47,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:35:47,771 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9056fc9f-6cf4-4edc-be7a-b815a90b5866/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:35:47,800 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:35:47,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:35:47,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:35:47,802 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:35:47,803 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:35:47,803 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:35:47,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:35:47,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:35:47,805 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:35:47,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:35:47,805 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:35:47,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:35:47,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:35:47,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:35:47,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:35:47,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:35:47,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:35:47,808 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:35:47,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:35:47,809 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:35:47,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:35:47,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:35:47,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:35:47,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:35:47,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:35:47,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:35:47,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:35:47,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:35:47,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:35:47,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:35:47,813 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:35:47,813 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:35:47,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:35:47,814 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_9056fc9f-6cf4-4edc-be7a-b815a90b5866/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9056fc9f-6cf4-4edc-be7a-b815a90b5866/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e059282fd5d86931dc4c64c61df508e5e1072350b4f411e7728a201bfba22a1 [2022-11-18 20:35:48,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:35:48,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:35:48,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:35:48,216 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:35:48,217 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:35:48,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9056fc9f-6cf4-4edc-be7a-b815a90b5866/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-11-18 20:35:48,335 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9056fc9f-6cf4-4edc-be7a-b815a90b5866/bin/uautomizer-TMbwUNV5ro/data/4a07827da/3c3195b9bb09439a9d17657efe577add/FLAGc81b3e13b [2022-11-18 20:35:49,010 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:35:49,020 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9056fc9f-6cf4-4edc-be7a-b815a90b5866/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-11-18 20:35:49,041 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9056fc9f-6cf4-4edc-be7a-b815a90b5866/bin/uautomizer-TMbwUNV5ro/data/4a07827da/3c3195b9bb09439a9d17657efe577add/FLAGc81b3e13b [2022-11-18 20:35:49,289 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9056fc9f-6cf4-4edc-be7a-b815a90b5866/bin/uautomizer-TMbwUNV5ro/data/4a07827da/3c3195b9bb09439a9d17657efe577add [2022-11-18 20:35:49,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:35:49,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:35:49,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:35:49,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:35:49,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:35:49,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:35:49" (1/1) ... [2022-11-18 20:35:49,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39484336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:49, skipping insertion in model container [2022-11-18 20:35:49,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:35:49" (1/1) ... [2022-11-18 20:35:49,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:35:49,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:35:49,770 WARN L234 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_9056fc9f-6cf4-4edc-be7a-b815a90b5866/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[10504,10517] [2022-11-18 20:35:49,824 WARN L234 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_9056fc9f-6cf4-4edc-be7a-b815a90b5866/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13076,13089] [2022-11-18 20:35:49,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:35:49,916 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:35:50,036 WARN L234 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_9056fc9f-6cf4-4edc-be7a-b815a90b5866/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[10504,10517] [2022-11-18 20:35:50,058 WARN L234 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_9056fc9f-6cf4-4edc-be7a-b815a90b5866/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13076,13089] [2022-11-18 20:35:50,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:35:50,138 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:35:50,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:50 WrapperNode [2022-11-18 20:35:50,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:35:50,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:35:50,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:35:50,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:35:50,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:50" (1/1) ... [2022-11-18 20:35:50,191 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:50" (1/1) ... [2022-11-18 20:35:50,270 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1059 [2022-11-18 20:35:50,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:35:50,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:35:50,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:35:50,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:35:50,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:50" (1/1) ... [2022-11-18 20:35:50,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:50" (1/1) ... [2022-11-18 20:35:50,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:50" (1/1) ... [2022-11-18 20:35:50,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:50" (1/1) ... [2022-11-18 20:35:50,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:50" (1/1) ... [2022-11-18 20:35:50,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:50" (1/1) ... [2022-11-18 20:35:50,344 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:50" (1/1) ... [2022-11-18 20:35:50,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:50" (1/1) ... [2022-11-18 20:35:50,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:35:50,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:35:50,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:35:50,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:35:50,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:50" (1/1) ... [2022-11-18 20:35:50,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:35:50,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9056fc9f-6cf4-4edc-be7a-b815a90b5866/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:50,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9056fc9f-6cf4-4edc-be7a-b815a90b5866/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:35:50,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9056fc9f-6cf4-4edc-be7a-b815a90b5866/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:35:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:35:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:35:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:35:50,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:35:50,787 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:35:50,790 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:35:52,023 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:35:52,050 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:35:52,050 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:35:52,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:35:52 BoogieIcfgContainer [2022-11-18 20:35:52,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:35:52,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:35:52,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:35:52,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:35:52,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:35:49" (1/3) ... [2022-11-18 20:35:52,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469350d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:35:52, skipping insertion in model container [2022-11-18 20:35:52,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:50" (2/3) ... [2022-11-18 20:35:52,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469350d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:35:52, skipping insertion in model container [2022-11-18 20:35:52,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:35:52" (3/3) ... [2022-11-18 20:35:52,075 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-11-18 20:35:52,102 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:35:52,102 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 20:35:52,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:35:52,220 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;@66d19aa1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:35:52,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 20:35:52,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 270 states, 267 states have (on average 1.7790262172284643) internal successors, (475), 269 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:52,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-18 20:35:52,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:52,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:52,258 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:35:52,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:52,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1276327155, now seen corresponding path program 1 times [2022-11-18 20:35:52,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:52,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784347593] [2022-11-18 20:35:52,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:52,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:53,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:53,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:53,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784347593] [2022-11-18 20:35:53,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784347593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:53,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:53,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:35:53,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693910077] [2022-11-18 20:35:53,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:53,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:35:53,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:53,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:35:53,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:35:53,448 INFO L87 Difference]: Start difference. First operand has 270 states, 267 states have (on average 1.7790262172284643) internal successors, (475), 269 states have internal predecessors, (475), 0 states have call successors, (0), 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 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:53,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:53,741 INFO L93 Difference]: Finished difference Result 782 states and 1378 transitions. [2022-11-18 20:35:53,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:35:53,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-18 20:35:53,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:53,761 INFO L225 Difference]: With dead ends: 782 [2022-11-18 20:35:53,762 INFO L226 Difference]: Without dead ends: 515 [2022-11-18 20:35:53,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:35:53,771 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 1094 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:53,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 1109 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:35:53,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-11-18 20:35:53,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 492. [2022-11-18 20:35:53,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 490 states have (on average 1.4653061224489796) internal successors, (718), 491 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:53,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 718 transitions. [2022-11-18 20:35:53,889 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 718 transitions. Word has length 98 [2022-11-18 20:35:53,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:53,889 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 718 transitions. [2022-11-18 20:35:53,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:53,890 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 718 transitions. [2022-11-18 20:35:53,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-18 20:35:53,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:53,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:53,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:35:53,895 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:35:53,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:53,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1180437433, now seen corresponding path program 1 times [2022-11-18 20:35:53,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:53,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637485177] [2022-11-18 20:35:53,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:53,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:54,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:54,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:54,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637485177] [2022-11-18 20:35:54,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637485177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:54,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:54,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:35:54,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601961121] [2022-11-18 20:35:54,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:54,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:35:54,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:54,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:35:54,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:35:54,025 INFO L87 Difference]: Start difference. First operand 492 states and 718 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:54,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:54,174 INFO L93 Difference]: Finished difference Result 1438 states and 2092 transitions. [2022-11-18 20:35:54,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:35:54,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-11-18 20:35:54,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:54,183 INFO L225 Difference]: With dead ends: 1438 [2022-11-18 20:35:54,183 INFO L226 Difference]: Without dead ends: 974 [2022-11-18 20:35:54,190 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 [2022-11-18 20:35:54,192 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 381 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:54,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 1127 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:35:54,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2022-11-18 20:35:54,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 494. [2022-11-18 20:35:54,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 492 states have (on average 1.4634146341463414) internal successors, (720), 493 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:54,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 720 transitions. [2022-11-18 20:35:54,303 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 720 transitions. Word has length 99 [2022-11-18 20:35:54,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:54,303 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 720 transitions. [2022-11-18 20:35:54,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:54,304 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 720 transitions. [2022-11-18 20:35:54,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-18 20:35:54,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:54,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:54,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:35:54,309 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:35:54,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:54,310 INFO L85 PathProgramCache]: Analyzing trace with hash -56994056, now seen corresponding path program 1 times [2022-11-18 20:35:54,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:54,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290233249] [2022-11-18 20:35:54,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:54,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:54,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:54,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:54,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290233249] [2022-11-18 20:35:54,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290233249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:54,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:54,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:35:54,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367385874] [2022-11-18 20:35:54,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:54,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:35:54,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:54,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:35:54,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:35:54,431 INFO L87 Difference]: Start difference. First operand 494 states and 720 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:54,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:54,564 INFO L93 Difference]: Finished difference Result 1025 states and 1550 transitions. [2022-11-18 20:35:54,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:35:54,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-11-18 20:35:54,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:54,571 INFO L225 Difference]: With dead ends: 1025 [2022-11-18 20:35:54,571 INFO L226 Difference]: Without dead ends: 658 [2022-11-18 20:35:54,579 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 [2022-11-18 20:35:54,583 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 233 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:54,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 803 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:35:54,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-11-18 20:35:54,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 642. [2022-11-18 20:35:54,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 640 states have (on average 1.50625) internal successors, (964), 641 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:54,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 964 transitions. [2022-11-18 20:35:54,729 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 964 transitions. Word has length 100 [2022-11-18 20:35:54,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:54,729 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 964 transitions. [2022-11-18 20:35:54,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:54,730 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 964 transitions. [2022-11-18 20:35:54,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-18 20:35:54,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:54,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:54,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:35:54,745 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:35:54,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:54,751 INFO L85 PathProgramCache]: Analyzing trace with hash 329606004, now seen corresponding path program 1 times [2022-11-18 20:35:54,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:54,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135953155] [2022-11-18 20:35:54,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:54,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:55,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:55,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:55,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135953155] [2022-11-18 20:35:55,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135953155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:55,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:55,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:35:55,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615770438] [2022-11-18 20:35:55,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:55,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:35:55,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:55,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:35:55,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:35:55,249 INFO L87 Difference]: Start difference. First operand 642 states and 964 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:55,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:55,564 INFO L93 Difference]: Finished difference Result 1838 states and 2748 transitions. [2022-11-18 20:35:55,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:35:55,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-11-18 20:35:55,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:55,600 INFO L225 Difference]: With dead ends: 1838 [2022-11-18 20:35:55,600 INFO L226 Difference]: Without dead ends: 1226 [2022-11-18 20:35:55,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:35:55,614 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 769 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:55,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 992 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:35:55,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2022-11-18 20:35:55,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1196. [2022-11-18 20:35:55,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 1194 states have (on average 1.4932998324958124) internal successors, (1783), 1195 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:55,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1783 transitions. [2022-11-18 20:35:55,851 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1783 transitions. Word has length 100 [2022-11-18 20:35:55,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:55,852 INFO L495 AbstractCegarLoop]: Abstraction has 1196 states and 1783 transitions. [2022-11-18 20:35:55,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:55,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1783 transitions. [2022-11-18 20:35:55,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-18 20:35:55,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:55,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:55,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:35:55,857 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:35:55,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:55,858 INFO L85 PathProgramCache]: Analyzing trace with hash 386972200, now seen corresponding path program 1 times [2022-11-18 20:35:55,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:55,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514453167] [2022-11-18 20:35:55,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:55,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:55,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:55,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:55,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514453167] [2022-11-18 20:35:55,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514453167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:55,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:55,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:35:55,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756470127] [2022-11-18 20:35:55,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:55,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:35:55,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:55,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:35:55,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:35:55,959 INFO L87 Difference]: Start difference. First operand 1196 states and 1783 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:56,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:56,544 INFO L93 Difference]: Finished difference Result 3512 states and 5229 transitions. [2022-11-18 20:35:56,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:35:56,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2022-11-18 20:35:56,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:56,556 INFO L225 Difference]: With dead ends: 3512 [2022-11-18 20:35:56,557 INFO L226 Difference]: Without dead ends: 2360 [2022-11-18 20:35:56,559 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 [2022-11-18 20:35:56,560 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 365 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:56,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 899 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:35:56,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2022-11-18 20:35:56,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 1200. [2022-11-18 20:35:56,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 1198 states have (on average 1.491652754590985) internal successors, (1787), 1199 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:56,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1787 transitions. [2022-11-18 20:35:56,825 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1787 transitions. Word has length 101 [2022-11-18 20:35:56,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:56,857 INFO L495 AbstractCegarLoop]: Abstraction has 1200 states and 1787 transitions. [2022-11-18 20:35:56,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:56,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1787 transitions. [2022-11-18 20:35:56,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-18 20:35:56,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:56,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:56,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:35:56,864 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:35:56,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:56,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1171143051, now seen corresponding path program 1 times [2022-11-18 20:35:56,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:56,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615389298] [2022-11-18 20:35:56,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:56,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:57,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:57,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:57,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615389298] [2022-11-18 20:35:57,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615389298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:57,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:57,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:35:57,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842051635] [2022-11-18 20:35:57,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:57,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:35:57,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:57,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:35:57,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:35:57,263 INFO L87 Difference]: Start difference. First operand 1200 states and 1787 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:57,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:57,826 INFO L93 Difference]: Finished difference Result 3440 states and 5109 transitions. [2022-11-18 20:35:57,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:35:57,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-11-18 20:35:57,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:57,839 INFO L225 Difference]: With dead ends: 3440 [2022-11-18 20:35:57,840 INFO L226 Difference]: Without dead ends: 2288 [2022-11-18 20:35:57,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:35:57,845 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 767 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:57,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 977 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:35:57,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2288 states. [2022-11-18 20:35:58,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2288 to 2258. [2022-11-18 20:35:58,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2258 states, 2256 states have (on average 1.4765070921985815) internal successors, (3331), 2257 states have internal predecessors, (3331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:58,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2258 states to 2258 states and 3331 transitions. [2022-11-18 20:35:58,339 INFO L78 Accepts]: Start accepts. Automaton has 2258 states and 3331 transitions. Word has length 102 [2022-11-18 20:35:58,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:58,339 INFO L495 AbstractCegarLoop]: Abstraction has 2258 states and 3331 transitions. [2022-11-18 20:35:58,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:58,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2258 states and 3331 transitions. [2022-11-18 20:35:58,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 20:35:58,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:58,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:58,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:35:58,344 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:35:58,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:58,345 INFO L85 PathProgramCache]: Analyzing trace with hash -308769655, now seen corresponding path program 1 times [2022-11-18 20:35:58,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:58,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070964431] [2022-11-18 20:35:58,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:58,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:58,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:58,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:58,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070964431] [2022-11-18 20:35:58,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070964431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:58,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:58,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:35:58,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713482581] [2022-11-18 20:35:58,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:58,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:35:58,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:58,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:35:58,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:35:58,439 INFO L87 Difference]: Start difference. First operand 2258 states and 3331 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:59,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:59,280 INFO L93 Difference]: Finished difference Result 6342 states and 9421 transitions. [2022-11-18 20:35:59,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:35:59,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-11-18 20:35:59,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:59,301 INFO L225 Difference]: With dead ends: 6342 [2022-11-18 20:35:59,301 INFO L226 Difference]: Without dead ends: 4424 [2022-11-18 20:35:59,305 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 [2022-11-18 20:35:59,306 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 351 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:59,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1119 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:35:59,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4424 states. [2022-11-18 20:35:59,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4424 to 2266. [2022-11-18 20:35:59,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2266 states, 2264 states have (on average 1.4748233215547704) internal successors, (3339), 2265 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:59,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2266 states to 2266 states and 3339 transitions. [2022-11-18 20:35:59,727 INFO L78 Accepts]: Start accepts. Automaton has 2266 states and 3339 transitions. Word has length 103 [2022-11-18 20:35:59,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:59,727 INFO L495 AbstractCegarLoop]: Abstraction has 2266 states and 3339 transitions. [2022-11-18 20:35:59,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:59,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2266 states and 3339 transitions. [2022-11-18 20:35:59,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-18 20:35:59,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:59,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:59,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:35:59,733 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:35:59,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:59,733 INFO L85 PathProgramCache]: Analyzing trace with hash 407327222, now seen corresponding path program 1 times [2022-11-18 20:35:59,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:59,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457238541] [2022-11-18 20:35:59,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:59,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:00,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:00,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:00,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457238541] [2022-11-18 20:36:00,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457238541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:00,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:00,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:36:00,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244762010] [2022-11-18 20:36:00,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:00,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:36:00,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:00,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:36:00,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:36:00,078 INFO L87 Difference]: Start difference. First operand 2266 states and 3339 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:00,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:00,979 INFO L93 Difference]: Finished difference Result 6523 states and 9584 transitions. [2022-11-18 20:36:00,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:36:00,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-11-18 20:36:00,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:00,998 INFO L225 Difference]: With dead ends: 6523 [2022-11-18 20:36:00,998 INFO L226 Difference]: Without dead ends: 4345 [2022-11-18 20:36:01,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:36:01,003 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 829 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:01,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1322 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:36:01,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4345 states. [2022-11-18 20:36:01,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4345 to 4324. [2022-11-18 20:36:01,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4324 states, 4322 states have (on average 1.4562702452568255) internal successors, (6294), 4323 states have internal predecessors, (6294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:01,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4324 states to 4324 states and 6294 transitions. [2022-11-18 20:36:01,606 INFO L78 Accepts]: Start accepts. Automaton has 4324 states and 6294 transitions. Word has length 104 [2022-11-18 20:36:01,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:01,607 INFO L495 AbstractCegarLoop]: Abstraction has 4324 states and 6294 transitions. [2022-11-18 20:36:01,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:01,608 INFO L276 IsEmpty]: Start isEmpty. Operand 4324 states and 6294 transitions. [2022-11-18 20:36:01,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-18 20:36:01,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:01,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:01,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:36:01,614 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:01,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:01,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1168400906, now seen corresponding path program 1 times [2022-11-18 20:36:01,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:01,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146059773] [2022-11-18 20:36:01,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:01,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:01,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:01,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146059773] [2022-11-18 20:36:01,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146059773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:01,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:01,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:36:01,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781675842] [2022-11-18 20:36:01,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:01,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:36:01,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:01,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:36:01,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:36:01,916 INFO L87 Difference]: Start difference. First operand 4324 states and 6294 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:02,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:02,606 INFO L93 Difference]: Finished difference Result 7561 states and 10991 transitions. [2022-11-18 20:36:02,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:36:02,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-11-18 20:36:02,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:02,621 INFO L225 Difference]: With dead ends: 7561 [2022-11-18 20:36:02,621 INFO L226 Difference]: Without dead ends: 3311 [2022-11-18 20:36:02,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:36:02,628 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 65 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:02,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1201 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:36:02,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2022-11-18 20:36:03,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 3311. [2022-11-18 20:36:03,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3311 states, 3309 states have (on average 1.4505893019038985) internal successors, (4800), 3310 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:03,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 4800 transitions. [2022-11-18 20:36:03,370 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 4800 transitions. Word has length 104 [2022-11-18 20:36:03,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:03,371 INFO L495 AbstractCegarLoop]: Abstraction has 3311 states and 4800 transitions. [2022-11-18 20:36:03,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:03,371 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 4800 transitions. [2022-11-18 20:36:03,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-18 20:36:03,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:03,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:03,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:36:03,376 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:03,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:03,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1671829970, now seen corresponding path program 1 times [2022-11-18 20:36:03,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:03,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196352179] [2022-11-18 20:36:03,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:03,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:03,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:03,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:03,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196352179] [2022-11-18 20:36:03,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196352179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:03,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:03,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:36:03,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102208414] [2022-11-18 20:36:03,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:03,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:36:03,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:03,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:36:03,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:36:03,480 INFO L87 Difference]: Start difference. First operand 3311 states and 4800 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:04,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:04,412 INFO L93 Difference]: Finished difference Result 6697 states and 10124 transitions. [2022-11-18 20:36:04,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:36:04,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-11-18 20:36:04,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:04,447 INFO L225 Difference]: With dead ends: 6697 [2022-11-18 20:36:04,454 INFO L226 Difference]: Without dead ends: 4666 [2022-11-18 20:36:04,458 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 [2022-11-18 20:36:04,459 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 268 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:04,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 748 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:36:04,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4666 states. [2022-11-18 20:36:05,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4666 to 4524. [2022-11-18 20:36:05,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4524 states, 4522 states have (on average 1.489827509951349) internal successors, (6737), 4523 states have internal predecessors, (6737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:05,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4524 states to 4524 states and 6737 transitions. [2022-11-18 20:36:05,287 INFO L78 Accepts]: Start accepts. Automaton has 4524 states and 6737 transitions. Word has length 106 [2022-11-18 20:36:05,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:05,288 INFO L495 AbstractCegarLoop]: Abstraction has 4524 states and 6737 transitions. [2022-11-18 20:36:05,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:05,289 INFO L276 IsEmpty]: Start isEmpty. Operand 4524 states and 6737 transitions. [2022-11-18 20:36:05,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-18 20:36:05,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:05,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:05,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:36:05,293 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:05,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:05,294 INFO L85 PathProgramCache]: Analyzing trace with hash -819031446, now seen corresponding path program 1 times [2022-11-18 20:36:05,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:05,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619705472] [2022-11-18 20:36:05,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:05,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:05,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:05,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:05,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619705472] [2022-11-18 20:36:05,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619705472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:05,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:05,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:36:05,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055585128] [2022-11-18 20:36:05,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:05,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:36:05,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:05,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:36:05,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:36:05,672 INFO L87 Difference]: Start difference. First operand 4524 states and 6737 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:07,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:07,329 INFO L93 Difference]: Finished difference Result 11670 states and 17386 transitions. [2022-11-18 20:36:07,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:36:07,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-11-18 20:36:07,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:07,352 INFO L225 Difference]: With dead ends: 11670 [2022-11-18 20:36:07,353 INFO L226 Difference]: Without dead ends: 7278 [2022-11-18 20:36:07,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:36:07,369 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 762 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:07,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 977 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:36:07,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7278 states. [2022-11-18 20:36:08,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7278 to 7263. [2022-11-18 20:36:08,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7263 states, 7261 states have (on average 1.4730753339760363) internal successors, (10696), 7262 states have internal predecessors, (10696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:08,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7263 states to 7263 states and 10696 transitions. [2022-11-18 20:36:08,408 INFO L78 Accepts]: Start accepts. Automaton has 7263 states and 10696 transitions. Word has length 107 [2022-11-18 20:36:08,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:08,409 INFO L495 AbstractCegarLoop]: Abstraction has 7263 states and 10696 transitions. [2022-11-18 20:36:08,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:08,409 INFO L276 IsEmpty]: Start isEmpty. Operand 7263 states and 10696 transitions. [2022-11-18 20:36:08,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-18 20:36:08,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:08,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:08,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:36:08,416 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:08,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:08,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1396534881, now seen corresponding path program 1 times [2022-11-18 20:36:08,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:08,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253472748] [2022-11-18 20:36:08,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:08,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:08,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:08,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:08,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253472748] [2022-11-18 20:36:08,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253472748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:08,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:08,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:36:08,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703259023] [2022-11-18 20:36:08,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:08,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:36:08,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:08,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:36:08,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:36:08,701 INFO L87 Difference]: Start difference. First operand 7263 states and 10696 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:09,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:09,757 INFO L93 Difference]: Finished difference Result 12775 states and 18871 transitions. [2022-11-18 20:36:09,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:36:09,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-11-18 20:36:09,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:09,777 INFO L225 Difference]: With dead ends: 12775 [2022-11-18 20:36:09,777 INFO L226 Difference]: Without dead ends: 7263 [2022-11-18 20:36:09,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:36:09,787 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 53 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:09,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1180 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:36:09,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7263 states. [2022-11-18 20:36:11,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7263 to 7263. [2022-11-18 20:36:11,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7263 states, 7261 states have (on average 1.4729376118991875) internal successors, (10695), 7262 states have internal predecessors, (10695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:11,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7263 states to 7263 states and 10695 transitions. [2022-11-18 20:36:11,443 INFO L78 Accepts]: Start accepts. Automaton has 7263 states and 10695 transitions. Word has length 109 [2022-11-18 20:36:11,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:11,443 INFO L495 AbstractCegarLoop]: Abstraction has 7263 states and 10695 transitions. [2022-11-18 20:36:11,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:11,444 INFO L276 IsEmpty]: Start isEmpty. Operand 7263 states and 10695 transitions. [2022-11-18 20:36:11,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-18 20:36:11,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:11,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:11,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:36:11,449 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:11,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:11,450 INFO L85 PathProgramCache]: Analyzing trace with hash -493927460, now seen corresponding path program 1 times [2022-11-18 20:36:11,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:11,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590394439] [2022-11-18 20:36:11,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:11,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:11,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:11,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:11,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590394439] [2022-11-18 20:36:11,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590394439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:11,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:11,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:36:11,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992841849] [2022-11-18 20:36:11,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:11,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:36:11,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:11,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:36:11,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:36:11,539 INFO L87 Difference]: Start difference. First operand 7263 states and 10695 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:13,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:13,386 INFO L93 Difference]: Finished difference Result 16825 states and 25242 transitions. [2022-11-18 20:36:13,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:36:13,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-11-18 20:36:13,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:13,417 INFO L225 Difference]: With dead ends: 16825 [2022-11-18 20:36:13,417 INFO L226 Difference]: Without dead ends: 10999 [2022-11-18 20:36:13,427 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 [2022-11-18 20:36:13,428 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 310 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:13,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 820 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:36:13,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10999 states. [2022-11-18 20:36:15,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10999 to 10986. [2022-11-18 20:36:15,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10986 states, 10984 states have (on average 1.4664967225054626) internal successors, (16108), 10985 states have internal predecessors, (16108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:15,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10986 states to 10986 states and 16108 transitions. [2022-11-18 20:36:15,120 INFO L78 Accepts]: Start accepts. Automaton has 10986 states and 16108 transitions. Word has length 109 [2022-11-18 20:36:15,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:15,121 INFO L495 AbstractCegarLoop]: Abstraction has 10986 states and 16108 transitions. [2022-11-18 20:36:15,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:15,122 INFO L276 IsEmpty]: Start isEmpty. Operand 10986 states and 16108 transitions. [2022-11-18 20:36:15,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-18 20:36:15,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:15,131 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:15,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:36:15,132 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:15,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:15,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1248791962, now seen corresponding path program 1 times [2022-11-18 20:36:15,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:15,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136489789] [2022-11-18 20:36:15,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:15,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:15,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:15,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:15,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136489789] [2022-11-18 20:36:15,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136489789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:15,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:15,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:36:15,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607743650] [2022-11-18 20:36:15,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:15,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:36:15,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:15,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:36:15,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:36:15,237 INFO L87 Difference]: Start difference. First operand 10986 states and 16108 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:18,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:18,632 INFO L93 Difference]: Finished difference Result 24374 states and 36765 transitions. [2022-11-18 20:36:18,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:36:18,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-11-18 20:36:18,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:18,677 INFO L225 Difference]: With dead ends: 24374 [2022-11-18 20:36:18,677 INFO L226 Difference]: Without dead ends: 16503 [2022-11-18 20:36:18,689 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 [2022-11-18 20:36:18,690 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 243 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:18,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 765 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:36:18,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16503 states. [2022-11-18 20:36:21,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16503 to 15897. [2022-11-18 20:36:21,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15897 states, 15895 states have (on average 1.498961937716263) internal successors, (23826), 15896 states have internal predecessors, (23826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:21,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15897 states to 15897 states and 23826 transitions. [2022-11-18 20:36:21,179 INFO L78 Accepts]: Start accepts. Automaton has 15897 states and 23826 transitions. Word has length 111 [2022-11-18 20:36:21,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:21,179 INFO L495 AbstractCegarLoop]: Abstraction has 15897 states and 23826 transitions. [2022-11-18 20:36:21,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:21,180 INFO L276 IsEmpty]: Start isEmpty. Operand 15897 states and 23826 transitions. [2022-11-18 20:36:21,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 20:36:21,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:21,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:21,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:36:21,188 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:21,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:21,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1418115648, now seen corresponding path program 1 times [2022-11-18 20:36:21,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:21,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296414003] [2022-11-18 20:36:21,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:21,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:21,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:21,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:21,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296414003] [2022-11-18 20:36:21,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296414003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:21,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:21,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:36:21,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106700942] [2022-11-18 20:36:21,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:21,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:36:21,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:21,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:36:21,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:36:21,260 INFO L87 Difference]: Start difference. First operand 15897 states and 23826 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:26,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:26,903 INFO L93 Difference]: Finished difference Result 44211 states and 67361 transitions. [2022-11-18 20:36:26,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:36:26,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-11-18 20:36:26,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:26,966 INFO L225 Difference]: With dead ends: 44211 [2022-11-18 20:36:26,966 INFO L226 Difference]: Without dead ends: 30551 [2022-11-18 20:36:26,984 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 [2022-11-18 20:36:26,985 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 292 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:26,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 636 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:36:27,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30551 states. [2022-11-18 20:36:31,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30551 to 30479. [2022-11-18 20:36:31,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30479 states, 30477 states have (on average 1.5052334547363586) internal successors, (45875), 30478 states have internal predecessors, (45875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:31,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30479 states to 30479 states and 45875 transitions. [2022-11-18 20:36:31,854 INFO L78 Accepts]: Start accepts. Automaton has 30479 states and 45875 transitions. Word has length 112 [2022-11-18 20:36:31,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:31,855 INFO L495 AbstractCegarLoop]: Abstraction has 30479 states and 45875 transitions. [2022-11-18 20:36:31,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:31,855 INFO L276 IsEmpty]: Start isEmpty. Operand 30479 states and 45875 transitions. [2022-11-18 20:36:31,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 20:36:31,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:31,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:31,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:36:31,869 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:31,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:31,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1904523579, now seen corresponding path program 1 times [2022-11-18 20:36:31,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:31,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755019792] [2022-11-18 20:36:31,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:31,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:32,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:32,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755019792] [2022-11-18 20:36:32,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755019792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:32,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:32,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:36:32,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986444128] [2022-11-18 20:36:32,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:32,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:36:32,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:32,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:36:32,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:36:32,206 INFO L87 Difference]: Start difference. First operand 30479 states and 45875 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:37,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:37,563 INFO L93 Difference]: Finished difference Result 54866 states and 82510 transitions. [2022-11-18 20:36:37,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:36:37,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-11-18 20:36:37,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:37,600 INFO L225 Difference]: With dead ends: 54866 [2022-11-18 20:36:37,601 INFO L226 Difference]: Without dead ends: 24445 [2022-11-18 20:36:37,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:36:37,621 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 43 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:37,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1161 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:36:37,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24445 states. [2022-11-18 20:36:42,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24445 to 24445. [2022-11-18 20:36:42,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24445 states, 24443 states have (on average 1.5017796506157182) internal successors, (36708), 24444 states have internal predecessors, (36708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:42,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24445 states to 24445 states and 36708 transitions. [2022-11-18 20:36:42,473 INFO L78 Accepts]: Start accepts. Automaton has 24445 states and 36708 transitions. Word has length 112 [2022-11-18 20:36:42,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:42,474 INFO L495 AbstractCegarLoop]: Abstraction has 24445 states and 36708 transitions. [2022-11-18 20:36:42,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:42,474 INFO L276 IsEmpty]: Start isEmpty. Operand 24445 states and 36708 transitions. [2022-11-18 20:36:42,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-18 20:36:42,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:42,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:42,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:36:42,488 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:42,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:42,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1225074747, now seen corresponding path program 1 times [2022-11-18 20:36:42,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:42,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740754043] [2022-11-18 20:36:42,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:42,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:43,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:43,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:43,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740754043] [2022-11-18 20:36:43,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740754043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:43,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:43,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:36:43,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145282067] [2022-11-18 20:36:43,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:43,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:36:43,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:43,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:36:43,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:36:43,134 INFO L87 Difference]: Start difference. First operand 24445 states and 36708 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:47,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:47,951 INFO L93 Difference]: Finished difference Result 44761 states and 68577 transitions. [2022-11-18 20:36:47,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:36:47,952 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-18 20:36:47,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:47,993 INFO L225 Difference]: With dead ends: 44761 [2022-11-18 20:36:47,993 INFO L226 Difference]: Without dead ends: 24541 [2022-11-18 20:36:48,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:36:48,013 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 1477 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:48,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 707 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:36:48,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24541 states. [2022-11-18 20:36:52,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24541 to 24541. [2022-11-18 20:36:52,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24541 states, 24539 states have (on average 1.4936223970006928) internal successors, (36652), 24540 states have internal predecessors, (36652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:52,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24541 states to 24541 states and 36652 transitions. [2022-11-18 20:36:52,592 INFO L78 Accepts]: Start accepts. Automaton has 24541 states and 36652 transitions. Word has length 115 [2022-11-18 20:36:52,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:52,593 INFO L495 AbstractCegarLoop]: Abstraction has 24541 states and 36652 transitions. [2022-11-18 20:36:52,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:52,593 INFO L276 IsEmpty]: Start isEmpty. Operand 24541 states and 36652 transitions. [2022-11-18 20:36:52,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-18 20:36:52,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:52,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:52,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:36:52,603 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:52,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:52,604 INFO L85 PathProgramCache]: Analyzing trace with hash -869449651, now seen corresponding path program 1 times [2022-11-18 20:36:52,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:52,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386719315] [2022-11-18 20:36:52,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:52,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:52,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:52,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:52,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386719315] [2022-11-18 20:36:52,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386719315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:52,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:52,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:36:52,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705327193] [2022-11-18 20:36:52,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:52,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:36:52,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:52,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:36:52,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:36:52,918 INFO L87 Difference]: Start difference. First operand 24541 states and 36652 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:58,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:58,385 INFO L93 Difference]: Finished difference Result 47157 states and 70444 transitions. [2022-11-18 20:36:58,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:36:58,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-18 20:36:58,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:58,422 INFO L225 Difference]: With dead ends: 47157 [2022-11-18 20:36:58,422 INFO L226 Difference]: Without dead ends: 22977 [2022-11-18 20:36:58,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:36:58,441 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 969 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:58,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 706 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:36:58,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22977 states.