./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.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_85e735ed-2015-4f92-8ef2-32c2a6f07ecb/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e735ed-2015-4f92-8ef2-32c2a6f07ecb/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_85e735ed-2015-4f92-8ef2-32c2a6f07ecb/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e735ed-2015-4f92-8ef2-32c2a6f07ecb/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e735ed-2015-4f92-8ef2-32c2a6f07ecb/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_85e735ed-2015-4f92-8ef2-32c2a6f07ecb/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 d46cc80a8d21eeff79ba02488456fda09c76eb75ff8eedd6b93124365a06d1f9 --- 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 20:36:37,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:36:37,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:36:37,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:36:37,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:36:37,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:36:37,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:36:37,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:36:37,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:36:37,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:36:37,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:36:37,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:36:37,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:36:37,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:36:37,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:36:37,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:36:37,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:36:37,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:36:37,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:36:37,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:36:37,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:36:37,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:36:37,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:36:37,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:36:37,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:36:37,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:36:37,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:36:37,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:36:37,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:36:37,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:36:37,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:36:37,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:36:37,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:36:37,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:36:37,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:36:37,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:36:37,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:36:37,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:36:37,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:36:37,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:36:37,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:36:37,735 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e735ed-2015-4f92-8ef2-32c2a6f07ecb/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:36:37,785 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:36:37,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:36:37,788 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:36:37,788 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:36:37,790 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:36:37,790 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:36:37,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:36:37,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:36:37,791 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:36:37,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:36:37,793 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:36:37,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:36:37,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:36:37,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:36:37,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:36:37,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:36:37,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:36:37,795 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:36:37,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:36:37,796 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:36:37,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:36:37,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:36:37,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:36:37,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:36:37,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:36:37,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:36:37,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:36:37,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:36:37,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:36:37,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:36:37,800 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:36:37,801 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:36:37,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:36:37,802 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_85e735ed-2015-4f92-8ef2-32c2a6f07ecb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e735ed-2015-4f92-8ef2-32c2a6f07ecb/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d46cc80a8d21eeff79ba02488456fda09c76eb75ff8eedd6b93124365a06d1f9 [2022-11-18 20:36:38,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:36:38,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:36:38,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:36:38,156 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:36:38,157 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:36:38,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e735ed-2015-4f92-8ef2-32c2a6f07ecb/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c [2022-11-18 20:36:38,237 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e735ed-2015-4f92-8ef2-32c2a6f07ecb/bin/uautomizer-TMbwUNV5ro/data/4aca7933d/61f4de00a3c24fa1be81ed139ec2005e/FLAG4cb682cc9 [2022-11-18 20:36:39,286 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:36:39,286 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e735ed-2015-4f92-8ef2-32c2a6f07ecb/sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c [2022-11-18 20:36:39,353 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e735ed-2015-4f92-8ef2-32c2a6f07ecb/bin/uautomizer-TMbwUNV5ro/data/4aca7933d/61f4de00a3c24fa1be81ed139ec2005e/FLAG4cb682cc9 [2022-11-18 20:36:39,610 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e735ed-2015-4f92-8ef2-32c2a6f07ecb/bin/uautomizer-TMbwUNV5ro/data/4aca7933d/61f4de00a3c24fa1be81ed139ec2005e [2022-11-18 20:36:39,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:36:39,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:36:39,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:36:39,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:36:39,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:36:39,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:36:39" (1/1) ... [2022-11-18 20:36:39,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b4e8a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:39, skipping insertion in model container [2022-11-18 20:36:39,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:36:39" (1/1) ... [2022-11-18 20:36:39,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:36:39,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:36:42,609 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_85e735ed-2015-4f92-8ef2-32c2a6f07ecb/sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c[377612,377625] [2022-11-18 20:36:42,647 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_85e735ed-2015-4f92-8ef2-32c2a6f07ecb/sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c[383339,383352] [2022-11-18 20:36:42,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:36:43,005 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:36:44,288 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_85e735ed-2015-4f92-8ef2-32c2a6f07ecb/sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c[377612,377625] [2022-11-18 20:36:44,298 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_85e735ed-2015-4f92-8ef2-32c2a6f07ecb/sv-benchmarks/c/combinations/Problem05_label47+token_ring.09.cil-1.c[383339,383352] [2022-11-18 20:36:44,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:36:44,407 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:36:44,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:44 WrapperNode [2022-11-18 20:36:44,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:36:44,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:36:44,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:36:44,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:36:44,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:44" (1/1) ... [2022-11-18 20:36:44,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:44" (1/1) ... [2022-11-18 20:36:45,012 INFO L138 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13025 [2022-11-18 20:36:45,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:36:45,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:36:45,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:36:45,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:36:45,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:44" (1/1) ... [2022-11-18 20:36:45,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:44" (1/1) ... [2022-11-18 20:36:45,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:44" (1/1) ... [2022-11-18 20:36:45,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:44" (1/1) ... [2022-11-18 20:36:45,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:44" (1/1) ... [2022-11-18 20:36:45,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:44" (1/1) ... [2022-11-18 20:36:45,570 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:44" (1/1) ... [2022-11-18 20:36:45,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:44" (1/1) ... [2022-11-18 20:36:45,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:36:45,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:36:45,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:36:45,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:36:45,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:44" (1/1) ... [2022-11-18 20:36:45,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:36:45,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e735ed-2015-4f92-8ef2-32c2a6f07ecb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:45,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e735ed-2015-4f92-8ef2-32c2a6f07ecb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:36:45,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85e735ed-2015-4f92-8ef2-32c2a6f07ecb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:36:45,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:36:45,926 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-18 20:36:45,926 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-18 20:36:45,926 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-18 20:36:45,927 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-18 20:36:45,927 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-18 20:36:45,927 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-18 20:36:45,927 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-18 20:36:45,927 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-18 20:36:45,927 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-18 20:36:45,928 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-18 20:36:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-18 20:36:45,928 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-18 20:36:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:36:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:36:45,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:36:46,086 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:36:46,089 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:36:56,496 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:36:56,545 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:36:56,545 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-11-18 20:36:56,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:36:56 BoogieIcfgContainer [2022-11-18 20:36:56,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:36:56,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:36:56,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:36:56,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:36:56,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:36:39" (1/3) ... [2022-11-18 20:36:56,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b97d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:36:56, skipping insertion in model container [2022-11-18 20:36:56,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:44" (2/3) ... [2022-11-18 20:36:56,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b97d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:36:56, skipping insertion in model container [2022-11-18 20:36:56,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:36:56" (3/3) ... [2022-11-18 20:36:56,567 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.09.cil-1.c [2022-11-18 20:36:56,592 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:36:56,592 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 20:36:56,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:36:56,735 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;@630f94b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:36:56,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 20:36:56,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-18 20:36:56,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 20:36:56,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:56,772 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, 1, 1, 1, 1, 1, 1, 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 20:36:56,773 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:56,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:56,780 INFO L85 PathProgramCache]: Analyzing trace with hash -762884387, now seen corresponding path program 1 times [2022-11-18 20:36:56,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:56,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898710522] [2022-11-18 20:36:56,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:56,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:57,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:36:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:57,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:36:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:57,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:36:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:57,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:36:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:57,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-18 20:36:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:57,437 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 20:36:57,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:57,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898710522] [2022-11-18 20:36:57,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898710522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:57,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:57,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:36:57,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358679628] [2022-11-18 20:36:57,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:57,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:36:57,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:57,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:36:57,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:36:57,485 INFO L87 Difference]: Start difference. First operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:36:59,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:59,756 INFO L93 Difference]: Finished difference Result 5081 states and 9345 transitions. [2022-11-18 20:36:59,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:36:59,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-18 20:36:59,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:59,787 INFO L225 Difference]: With dead ends: 5081 [2022-11-18 20:36:59,787 INFO L226 Difference]: Without dead ends: 2532 [2022-11-18 20:36:59,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:36:59,804 INFO L413 NwaCegarLoop]: 4304 mSDtfsCounter, 811 mSDsluCounter, 12387 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 16691 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:59,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 16691 Invalid, 855 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [50 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 20:36:59,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2022-11-18 20:36:59,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2423. [2022-11-18 20:36:59,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2392 states have (on average 1.8323578595317727) internal successors, (4383), 2394 states have internal predecessors, (4383), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-18 20:36:59,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4429 transitions. [2022-11-18 20:36:59,990 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4429 transitions. Word has length 145 [2022-11-18 20:36:59,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:59,991 INFO L495 AbstractCegarLoop]: Abstraction has 2423 states and 4429 transitions. [2022-11-18 20:36:59,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:36:59,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4429 transitions. [2022-11-18 20:36:59,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 20:36:59,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:59,999 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, 1, 1, 1, 1, 1, 1, 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 20:36:59,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:36:59,999 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:37:00,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:00,000 INFO L85 PathProgramCache]: Analyzing trace with hash 854556063, now seen corresponding path program 1 times [2022-11-18 20:37:00,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:00,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300901242] [2022-11-18 20:37:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:00,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:00,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:37:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:00,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:37:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:00,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:37:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:00,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:37:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:00,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-18 20:37:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:00,455 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 20:37:00,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:00,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300901242] [2022-11-18 20:37:00,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300901242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:00,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:00,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:37:00,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821814262] [2022-11-18 20:37:00,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:00,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:37:00,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:00,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:37:00,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:37:00,461 INFO L87 Difference]: Start difference. First operand 2423 states and 4429 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:37:03,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:37:03,962 INFO L93 Difference]: Finished difference Result 3223 states and 5716 transitions. [2022-11-18 20:37:03,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:37:03,962 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-18 20:37:03,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:37:03,977 INFO L225 Difference]: With dead ends: 3223 [2022-11-18 20:37:03,977 INFO L226 Difference]: Without dead ends: 2938 [2022-11-18 20:37:03,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:37:03,982 INFO L413 NwaCegarLoop]: 4240 mSDtfsCounter, 5173 mSDsluCounter, 12629 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5189 SdHoareTripleChecker+Valid, 16869 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:37:03,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5189 Valid, 16869 Invalid, 1949 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 1853 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-18 20:37:03,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2022-11-18 20:37:04,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2721. [2022-11-18 20:37:04,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.8071294559099438) internal successors, (4816), 2668 states have internal predecessors, (4816), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-11-18 20:37:04,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4901 transitions. [2022-11-18 20:37:04,110 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4901 transitions. Word has length 145 [2022-11-18 20:37:04,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:37:04,111 INFO L495 AbstractCegarLoop]: Abstraction has 2721 states and 4901 transitions. [2022-11-18 20:37:04,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:37:04,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4901 transitions. [2022-11-18 20:37:04,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 20:37:04,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:37:04,114 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, 1, 1, 1, 1, 1, 1, 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 20:37:04,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:37:04,115 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:37:04,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:04,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1697407709, now seen corresponding path program 1 times [2022-11-18 20:37:04,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:04,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077194885] [2022-11-18 20:37:04,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:04,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:04,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:37:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:04,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:37:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:04,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:37:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:04,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:37:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:04,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-18 20:37:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:04,525 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 20:37:04,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:04,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077194885] [2022-11-18 20:37:04,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077194885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:04,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:04,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:37:04,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343791091] [2022-11-18 20:37:04,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:04,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:37:04,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:04,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:37:04,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:37:04,528 INFO L87 Difference]: Start difference. First operand 2721 states and 4901 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:37:08,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:37:08,604 INFO L93 Difference]: Finished difference Result 3941 states and 6863 transitions. [2022-11-18 20:37:08,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:37:08,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-18 20:37:08,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:37:08,626 INFO L225 Difference]: With dead ends: 3941 [2022-11-18 20:37:08,627 INFO L226 Difference]: Without dead ends: 3358 [2022-11-18 20:37:08,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:37:08,641 INFO L413 NwaCegarLoop]: 4401 mSDtfsCounter, 5204 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2794 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5220 SdHoareTripleChecker+Valid, 21721 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:37:08,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5220 Valid, 21721 Invalid, 2851 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 2794 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-18 20:37:08,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2022-11-18 20:37:08,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 2998. [2022-11-18 20:37:08,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2998 states, 2917 states have (on average 1.7850531367843676) internal successors, (5207), 2921 states have internal predecessors, (5207), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-11-18 20:37:08,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 5330 transitions. [2022-11-18 20:37:08,806 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 5330 transitions. Word has length 145 [2022-11-18 20:37:08,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:37:08,808 INFO L495 AbstractCegarLoop]: Abstraction has 2998 states and 5330 transitions. [2022-11-18 20:37:08,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:37:08,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 5330 transitions. [2022-11-18 20:37:08,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 20:37:08,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:37:08,817 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, 1, 1, 1, 1, 1, 1, 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 20:37:08,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:37:08,817 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:37:08,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:08,818 INFO L85 PathProgramCache]: Analyzing trace with hash -750369823, now seen corresponding path program 1 times [2022-11-18 20:37:08,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:08,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430110161] [2022-11-18 20:37:08,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:08,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:09,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:37:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:09,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:37:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:09,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:37:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:09,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:37:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:09,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-18 20:37:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:09,193 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 20:37:09,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:09,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430110161] [2022-11-18 20:37:09,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430110161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:09,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:09,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:37:09,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470138763] [2022-11-18 20:37:09,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:09,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:37:09,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:09,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:37:09,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:37:09,198 INFO L87 Difference]: Start difference. First operand 2998 states and 5330 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:37:13,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:37:13,182 INFO L93 Difference]: Finished difference Result 4998 states and 8540 transitions. [2022-11-18 20:37:13,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:37:13,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-18 20:37:13,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:37:13,204 INFO L225 Difference]: With dead ends: 4998 [2022-11-18 20:37:13,204 INFO L226 Difference]: Without dead ends: 4138 [2022-11-18 20:37:13,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:37:13,221 INFO L413 NwaCegarLoop]: 4399 mSDtfsCounter, 5198 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5214 SdHoareTripleChecker+Valid, 21719 SdHoareTripleChecker+Invalid, 2832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:37:13,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5214 Valid, 21719 Invalid, 2832 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-18 20:37:13,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4138 states. [2022-11-18 20:37:13,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4138 to 3556. [2022-11-18 20:37:13,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3425 states have (on average 1.7506569343065694) internal successors, (5996), 3431 states have internal predecessors, (5996), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-11-18 20:37:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 6199 transitions. [2022-11-18 20:37:13,445 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 6199 transitions. Word has length 145 [2022-11-18 20:37:13,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:37:13,446 INFO L495 AbstractCegarLoop]: Abstraction has 3556 states and 6199 transitions. [2022-11-18 20:37:13,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:37:13,447 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 6199 transitions. [2022-11-18 20:37:13,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 20:37:13,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:37:13,450 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, 1, 1, 1, 1, 1, 1, 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 20:37:13,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:37:13,450 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:37:13,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:13,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1494188575, now seen corresponding path program 1 times [2022-11-18 20:37:13,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:13,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070190782] [2022-11-18 20:37:13,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:13,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:13,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:37:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:13,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:37:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:13,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:37:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:13,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:37:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:13,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-18 20:37:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:13,749 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 20:37:13,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:13,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070190782] [2022-11-18 20:37:13,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070190782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:13,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:13,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:37:13,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862024852] [2022-11-18 20:37:13,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:13,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:37:13,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:13,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:37:13,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:37:13,752 INFO L87 Difference]: Start difference. First operand 3556 states and 6199 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:37:18,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:37:18,010 INFO L93 Difference]: Finished difference Result 7038 states and 11757 transitions. [2022-11-18 20:37:18,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:37:18,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-18 20:37:18,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:37:18,039 INFO L225 Difference]: With dead ends: 7038 [2022-11-18 20:37:18,040 INFO L226 Difference]: Without dead ends: 5620 [2022-11-18 20:37:18,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:37:18,047 INFO L413 NwaCegarLoop]: 4399 mSDtfsCounter, 5197 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2760 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5213 SdHoareTripleChecker+Valid, 21719 SdHoareTripleChecker+Invalid, 2819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:37:18,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5213 Valid, 21719 Invalid, 2819 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2760 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-18 20:37:18,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5620 states. [2022-11-18 20:37:18,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5620 to 4673. [2022-11-18 20:37:18,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4673 states, 4442 states have (on average 1.7050877982890589) internal successors, (7574), 4452 states have internal predecessors, (7574), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-11-18 20:37:18,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 7943 transitions. [2022-11-18 20:37:18,541 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 7943 transitions. Word has length 145 [2022-11-18 20:37:18,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:37:18,542 INFO L495 AbstractCegarLoop]: Abstraction has 4673 states and 7943 transitions. [2022-11-18 20:37:18,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:37:18,542 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 7943 transitions. [2022-11-18 20:37:18,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 20:37:18,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:37:18,547 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, 1, 1, 1, 1, 1, 1, 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 20:37:18,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:37:18,548 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:37:18,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:18,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1982235681, now seen corresponding path program 1 times [2022-11-18 20:37:18,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:18,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872239936] [2022-11-18 20:37:18,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:18,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:18,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:37:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:18,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:37:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:18,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:37:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:18,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:37:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:18,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-18 20:37:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:18,870 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 20:37:18,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:18,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872239936] [2022-11-18 20:37:18,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872239936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:18,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:18,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:37:18,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681773175] [2022-11-18 20:37:18,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:18,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:37:18,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:18,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:37:18,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:37:18,873 INFO L87 Difference]: Start difference. First operand 4673 states and 7943 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:37:23,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:37:23,310 INFO L93 Difference]: Finished difference Result 11117 states and 18207 transitions. [2022-11-18 20:37:23,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:37:23,314 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-18 20:37:23,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:37:23,354 INFO L225 Difference]: With dead ends: 11117 [2022-11-18 20:37:23,355 INFO L226 Difference]: Without dead ends: 8582 [2022-11-18 20:37:23,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:37:23,367 INFO L413 NwaCegarLoop]: 4399 mSDtfsCounter, 5196 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5212 SdHoareTripleChecker+Valid, 21719 SdHoareTripleChecker+Invalid, 2806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:37:23,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5212 Valid, 21719 Invalid, 2806 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2747 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-18 20:37:23,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8582 states. [2022-11-18 20:37:23,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8582 to 6914. [2022-11-18 20:37:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6914 states, 6483 states have (on average 1.6566404442387783) internal successors, (10740), 6501 states have internal predecessors, (10740), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-11-18 20:37:23,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6914 states to 6914 states and 11459 transitions. [2022-11-18 20:37:23,883 INFO L78 Accepts]: Start accepts. Automaton has 6914 states and 11459 transitions. Word has length 145 [2022-11-18 20:37:23,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:37:23,883 INFO L495 AbstractCegarLoop]: Abstraction has 6914 states and 11459 transitions. [2022-11-18 20:37:23,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:37:23,884 INFO L276 IsEmpty]: Start isEmpty. Operand 6914 states and 11459 transitions. [2022-11-18 20:37:23,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 20:37:23,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:37:23,889 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, 1, 1, 1, 1, 1, 1, 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 20:37:23,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:37:23,889 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:37:23,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:23,890 INFO L85 PathProgramCache]: Analyzing trace with hash 889600479, now seen corresponding path program 1 times [2022-11-18 20:37:23,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:23,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92712606] [2022-11-18 20:37:23,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:23,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:23,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:37:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:24,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:37:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:24,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:37:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:24,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:37:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:24,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-18 20:37:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:24,116 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 20:37:24,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:24,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92712606] [2022-11-18 20:37:24,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92712606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:24,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:24,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:37:24,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425424290] [2022-11-18 20:37:24,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:24,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:37:24,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:24,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:37:24,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:37:24,119 INFO L87 Difference]: Start difference. First operand 6914 states and 11459 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:37:28,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:37:28,716 INFO L93 Difference]: Finished difference Result 19276 states and 31169 transitions. [2022-11-18 20:37:28,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:37:28,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-18 20:37:28,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:37:28,769 INFO L225 Difference]: With dead ends: 19276 [2022-11-18 20:37:28,770 INFO L226 Difference]: Without dead ends: 14500 [2022-11-18 20:37:28,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:37:28,790 INFO L413 NwaCegarLoop]: 4245 mSDtfsCounter, 5275 mSDsluCounter, 16820 mSDsCounter, 0 mSdLazyCounter, 2444 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5291 SdHoareTripleChecker+Valid, 21065 SdHoareTripleChecker+Invalid, 2531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:37:28,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5291 Valid, 21065 Invalid, 2531 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [87 Valid, 2444 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-18 20:37:28,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14500 states. [2022-11-18 20:37:29,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14500 to 11411. [2022-11-18 20:37:29,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11411 states, 10580 states have (on average 1.6156899810964083) internal successors, (17094), 10614 states have internal predecessors, (17094), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-11-18 20:37:29,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11411 states to 11411 states and 18567 transitions. [2022-11-18 20:37:29,790 INFO L78 Accepts]: Start accepts. Automaton has 11411 states and 18567 transitions. Word has length 145 [2022-11-18 20:37:29,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:37:29,790 INFO L495 AbstractCegarLoop]: Abstraction has 11411 states and 18567 transitions. [2022-11-18 20:37:29,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:37:29,791 INFO L276 IsEmpty]: Start isEmpty. Operand 11411 states and 18567 transitions. [2022-11-18 20:37:29,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 20:37:29,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:37:29,799 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, 1, 1, 1, 1, 1, 1, 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 20:37:29,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:37:29,800 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:37:29,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:29,800 INFO L85 PathProgramCache]: Analyzing trace with hash -392571807, now seen corresponding path program 1 times [2022-11-18 20:37:29,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:29,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789934395] [2022-11-18 20:37:29,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:29,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:29,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:37:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:29,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:37:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:29,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:37:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:29,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:37:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:30,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-18 20:37:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:30,006 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 20:37:30,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:30,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789934395] [2022-11-18 20:37:30,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789934395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:30,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:30,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:37:30,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732168445] [2022-11-18 20:37:30,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:30,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:37:30,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:30,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:37:30,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:37:30,009 INFO L87 Difference]: Start difference. First operand 11411 states and 18567 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:37:33,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:37:33,497 INFO L93 Difference]: Finished difference Result 23942 states and 38818 transitions. [2022-11-18 20:37:33,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:37:33,497 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-18 20:37:33,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:37:33,554 INFO L225 Difference]: With dead ends: 23942 [2022-11-18 20:37:33,554 INFO L226 Difference]: Without dead ends: 14669 [2022-11-18 20:37:33,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:37:33,591 INFO L413 NwaCegarLoop]: 4196 mSDtfsCounter, 4853 mSDsluCounter, 16571 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4870 SdHoareTripleChecker+Valid, 20767 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:37:33,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4870 Valid, 20767 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 20:37:33,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14669 states. [2022-11-18 20:37:34,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14669 to 11411. [2022-11-18 20:37:34,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11411 states, 10580 states have (on average 1.612570888468809) internal successors, (17061), 10614 states have internal predecessors, (17061), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-11-18 20:37:34,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11411 states to 11411 states and 18534 transitions. [2022-11-18 20:37:34,868 INFO L78 Accepts]: Start accepts. Automaton has 11411 states and 18534 transitions. Word has length 145 [2022-11-18 20:37:34,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:37:34,868 INFO L495 AbstractCegarLoop]: Abstraction has 11411 states and 18534 transitions. [2022-11-18 20:37:34,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:37:34,869 INFO L276 IsEmpty]: Start isEmpty. Operand 11411 states and 18534 transitions. [2022-11-18 20:37:34,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 20:37:34,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:37:34,877 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, 1, 1, 1, 1, 1, 1, 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 20:37:34,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:37:34,878 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:37:34,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:34,878 INFO L85 PathProgramCache]: Analyzing trace with hash 2059919775, now seen corresponding path program 1 times [2022-11-18 20:37:34,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:34,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165531877] [2022-11-18 20:37:34,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:34,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:34,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:37:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:35,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:37:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:37:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:35,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:37:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:35,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-18 20:37:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:35,118 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 20:37:35,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:35,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165531877] [2022-11-18 20:37:35,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165531877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:35,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:35,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:37:35,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623942855] [2022-11-18 20:37:35,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:35,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:37:35,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:35,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:37:35,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:37:35,121 INFO L87 Difference]: Start difference. First operand 11411 states and 18534 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:37:41,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:37:41,141 INFO L93 Difference]: Finished difference Result 35561 states and 57055 transitions. [2022-11-18 20:37:41,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:37:41,142 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-18 20:37:41,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:37:41,242 INFO L225 Difference]: With dead ends: 35561 [2022-11-18 20:37:41,242 INFO L226 Difference]: Without dead ends: 26288 [2022-11-18 20:37:41,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:37:41,272 INFO L413 NwaCegarLoop]: 4399 mSDtfsCounter, 5187 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2696 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5203 SdHoareTripleChecker+Valid, 21719 SdHoareTripleChecker+Invalid, 2755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:37:41,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5203 Valid, 21719 Invalid, 2755 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2696 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-18 20:37:41,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26288 states. [2022-11-18 20:37:43,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26288 to 20469. [2022-11-18 20:37:43,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20469 states, 18838 states have (on average 1.5828113387833103) internal successors, (29817), 18904 states have internal predecessors, (29817), 1175 states have call successors, (1175), 390 states have call predecessors, (1175), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-11-18 20:37:43,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20469 states to 20469 states and 32960 transitions. [2022-11-18 20:37:43,666 INFO L78 Accepts]: Start accepts. Automaton has 20469 states and 32960 transitions. Word has length 145 [2022-11-18 20:37:43,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:37:43,666 INFO L495 AbstractCegarLoop]: Abstraction has 20469 states and 32960 transitions. [2022-11-18 20:37:43,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:37:43,667 INFO L276 IsEmpty]: Start isEmpty. Operand 20469 states and 32960 transitions. [2022-11-18 20:37:43,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 20:37:43,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:37:43,680 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, 1, 1, 1, 1, 1, 1, 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 20:37:43,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:37:43,681 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:37:43,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:43,682 INFO L85 PathProgramCache]: Analyzing trace with hash 337917089, now seen corresponding path program 1 times [2022-11-18 20:37:43,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:43,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796738522] [2022-11-18 20:37:43,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:43,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:43,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:37:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:43,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:37:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:43,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:37:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:43,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:37:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:43,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-18 20:37:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:43,911 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 20:37:43,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:43,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796738522] [2022-11-18 20:37:43,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796738522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:43,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:43,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:37:43,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291045672] [2022-11-18 20:37:43,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:43,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:37:43,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:43,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:37:43,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:37:43,914 INFO L87 Difference]: Start difference. First operand 20469 states and 32960 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:37:52,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:37:52,979 INFO L93 Difference]: Finished difference Result 68201 states and 109703 transitions. [2022-11-18 20:37:52,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:37:52,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-18 20:37:52,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:37:53,242 INFO L225 Difference]: With dead ends: 68201 [2022-11-18 20:37:53,243 INFO L226 Difference]: Without dead ends: 49870 [2022-11-18 20:37:53,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:37:53,306 INFO L413 NwaCegarLoop]: 4399 mSDtfsCounter, 5192 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2678 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5208 SdHoareTripleChecker+Valid, 21719 SdHoareTripleChecker+Invalid, 2737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:37:53,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5208 Valid, 21719 Invalid, 2737 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2678 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-18 20:37:53,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49870 states. [2022-11-18 20:37:57,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49870 to 38646. [2022-11-18 20:37:57,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38646 states, 35415 states have (on average 1.564845404489623) internal successors, (55419), 35545 states have internal predecessors, (55419), 2327 states have call successors, (2327), 774 states have call predecessors, (2327), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-11-18 20:37:57,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38646 states to 38646 states and 62388 transitions. [2022-11-18 20:37:57,479 INFO L78 Accepts]: Start accepts. Automaton has 38646 states and 62388 transitions. Word has length 145 [2022-11-18 20:37:57,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:37:57,479 INFO L495 AbstractCegarLoop]: Abstraction has 38646 states and 62388 transitions. [2022-11-18 20:37:57,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:37:57,480 INFO L276 IsEmpty]: Start isEmpty. Operand 38646 states and 62388 transitions. [2022-11-18 20:37:57,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 20:37:57,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:37:57,500 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, 1, 1, 1, 1, 1, 1, 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 20:37:57,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:37:57,501 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:37:57,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:57,501 INFO L85 PathProgramCache]: Analyzing trace with hash 5273951, now seen corresponding path program 1 times [2022-11-18 20:37:57,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:57,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323465458] [2022-11-18 20:37:57,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:57,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:57,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:37:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:57,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:37:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:57,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:37:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:57,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:37:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:57,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-18 20:37:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:57,879 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 20:37:57,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:57,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323465458] [2022-11-18 20:37:57,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323465458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:57,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:57,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:37:57,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938887485] [2022-11-18 20:37:57,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:57,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:37:57,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:57,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:37:57,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:37:57,882 INFO L87 Difference]: Start difference. First operand 38646 states and 62388 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)