./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.09.cil-2.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_26ece4b1-647d-4e78-9fd9-f1a496fd2917/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ece4b1-647d-4e78-9fd9-f1a496fd2917/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_26ece4b1-647d-4e78-9fd9-f1a496fd2917/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ece4b1-647d-4e78-9fd9-f1a496fd2917/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.09.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ece4b1-647d-4e78-9fd9-f1a496fd2917/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_26ece4b1-647d-4e78-9fd9-f1a496fd2917/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 ae06fa96255229a08f1e8c01eaa7f353b1ba462dacd64e058a3c6957598773d9 --- 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 19:32:55,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:32:55,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:32:55,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:32:55,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:32:55,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:32:55,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:32:55,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:32:55,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:32:55,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:32:55,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:32:55,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:32:55,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:32:55,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:32:55,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:32:55,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:32:55,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:32:55,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:32:55,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:32:55,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:32:55,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:32:55,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:32:55,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:32:55,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:32:55,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:32:55,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:32:55,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:32:55,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:32:55,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:32:55,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:32:55,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:32:55,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:32:55,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:32:55,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:32:55,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:32:55,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:32:55,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:32:55,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:32:55,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:32:55,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:32:55,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:32:55,693 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ece4b1-647d-4e78-9fd9-f1a496fd2917/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:32:55,734 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:32:55,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:32:55,735 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:32:55,735 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:32:55,736 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:32:55,736 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:32:55,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:32:55,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:32:55,738 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:32:55,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:32:55,739 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:32:55,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:32:55,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:32:55,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:32:55,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:32:55,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:32:55,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:32:55,741 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:32:55,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:32:55,742 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:32:55,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:32:55,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:32:55,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:32:55,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:32:55,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:32:55,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:32:55,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:32:55,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:32:55,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:32:55,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:32:55,746 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:32:55,746 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:32:55,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:32:55,747 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_26ece4b1-647d-4e78-9fd9-f1a496fd2917/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ece4b1-647d-4e78-9fd9-f1a496fd2917/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae06fa96255229a08f1e8c01eaa7f353b1ba462dacd64e058a3c6957598773d9 [2022-11-18 19:32:56,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:32:56,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:32:56,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:32:56,117 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:32:56,118 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:32:56,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ece4b1-647d-4e78-9fd9-f1a496fd2917/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/systemc/token_ring.09.cil-2.c [2022-11-18 19:32:56,207 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ece4b1-647d-4e78-9fd9-f1a496fd2917/bin/uautomizer-TMbwUNV5ro/data/3e16e5fe0/44254f60f2d1497d9db0be63a4795499/FLAG5d6829d78 [2022-11-18 19:32:56,745 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:32:56,746 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ece4b1-647d-4e78-9fd9-f1a496fd2917/sv-benchmarks/c/systemc/token_ring.09.cil-2.c [2022-11-18 19:32:56,768 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ece4b1-647d-4e78-9fd9-f1a496fd2917/bin/uautomizer-TMbwUNV5ro/data/3e16e5fe0/44254f60f2d1497d9db0be63a4795499/FLAG5d6829d78 [2022-11-18 19:32:57,072 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ece4b1-647d-4e78-9fd9-f1a496fd2917/bin/uautomizer-TMbwUNV5ro/data/3e16e5fe0/44254f60f2d1497d9db0be63a4795499 [2022-11-18 19:32:57,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:32:57,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:32:57,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:32:57,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:32:57,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:32:57,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:32:57" (1/1) ... [2022-11-18 19:32:57,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f37b67a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:57, skipping insertion in model container [2022-11-18 19:32:57,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:32:57" (1/1) ... [2022-11-18 19:32:57,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:32:57,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:32:57,338 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_26ece4b1-647d-4e78-9fd9-f1a496fd2917/sv-benchmarks/c/systemc/token_ring.09.cil-2.c[671,684] [2022-11-18 19:32:57,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:32:57,471 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:32:57,483 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_26ece4b1-647d-4e78-9fd9-f1a496fd2917/sv-benchmarks/c/systemc/token_ring.09.cil-2.c[671,684] [2022-11-18 19:32:57,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:32:57,570 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:32:57,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:57 WrapperNode [2022-11-18 19:32:57,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:32:57,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:32:57,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:32:57,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:32:57,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:57" (1/1) ... [2022-11-18 19:32:57,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:57" (1/1) ... [2022-11-18 19:32:57,660 INFO L138 Inliner]: procedures = 46, calls = 59, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 684 [2022-11-18 19:32:57,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:32:57,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:32:57,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:32:57,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:32:57,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:57" (1/1) ... [2022-11-18 19:32:57,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:57" (1/1) ... [2022-11-18 19:32:57,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:57" (1/1) ... [2022-11-18 19:32:57,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:57" (1/1) ... [2022-11-18 19:32:57,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:57" (1/1) ... [2022-11-18 19:32:57,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:57" (1/1) ... [2022-11-18 19:32:57,741 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:57" (1/1) ... [2022-11-18 19:32:57,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:57" (1/1) ... [2022-11-18 19:32:57,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:32:57,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:32:57,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:32:57,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:32:57,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:57" (1/1) ... [2022-11-18 19:32:57,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:32:57,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ece4b1-647d-4e78-9fd9-f1a496fd2917/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:57,808 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ece4b1-647d-4e78-9fd9-f1a496fd2917/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:57,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ece4b1-647d-4e78-9fd9-f1a496fd2917/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:32:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:32:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-18 19:32:57,862 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-18 19:32:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-18 19:32:57,863 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-18 19:32:57,863 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-18 19:32:57,863 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-18 19:32:57,863 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-18 19:32:57,864 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-18 19:32:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-18 19:32:57,864 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-18 19:32:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-18 19:32:57,865 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-18 19:32:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:32:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-18 19:32:57,865 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-18 19:32:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:32:57,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:32:58,014 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:32:58,017 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:32:58,997 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:32:59,016 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:32:59,016 INFO L300 CfgBuilder]: Removed 12 assume(true) statements. [2022-11-18 19:32:59,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:32:59 BoogieIcfgContainer [2022-11-18 19:32:59,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:32:59,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:32:59,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:32:59,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:32:59,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:32:57" (1/3) ... [2022-11-18 19:32:59,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b18b764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:32:59, skipping insertion in model container [2022-11-18 19:32:59,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:57" (2/3) ... [2022-11-18 19:32:59,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b18b764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:32:59, skipping insertion in model container [2022-11-18 19:32:59,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:32:59" (3/3) ... [2022-11-18 19:32:59,032 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.09.cil-2.c [2022-11-18 19:32:59,053 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:32:59,053 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:32:59,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:32:59,179 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;@46cc2bb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:32:59,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:32:59,193 INFO L276 IsEmpty]: Start isEmpty. Operand has 315 states, 281 states have (on average 1.6583629893238434) internal successors, (466), 285 states have internal predecessors, (466), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-18 19:32:59,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 19:32:59,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:32:59,211 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 19:32:59,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:32:59,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:59,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1520697994, now seen corresponding path program 1 times [2022-11-18 19:32:59,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:59,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152518168] [2022-11-18 19:32:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:59,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:59,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:32:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:59,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:32:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:59,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 19:32:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:59,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 19:32:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:59,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 19:32:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:59,855 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 19:32:59,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:59,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152518168] [2022-11-18 19:32:59,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152518168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:59,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:59,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:32:59,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420685655] [2022-11-18 19:32:59,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:59,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:32:59,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:59,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:32:59,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:32:59,917 INFO L87 Difference]: Start difference. First operand has 315 states, 281 states have (on average 1.6583629893238434) internal successors, (466), 285 states have internal predecessors, (466), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:01,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:01,826 INFO L93 Difference]: Finished difference Result 725 states and 1199 transitions. [2022-11-18 19:33:01,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:33:01,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 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 19:33:01,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:01,843 INFO L225 Difference]: With dead ends: 725 [2022-11-18 19:33:01,843 INFO L226 Difference]: Without dead ends: 418 [2022-11-18 19:33:01,849 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 19:33:01,852 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 821 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:01,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 629 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 19:33:01,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-11-18 19:33:01,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 309. [2022-11-18 19:33:01,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 277 states have (on average 1.5703971119133573) internal successors, (435), 279 states have internal predecessors, (435), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-18 19:33:01,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 483 transitions. [2022-11-18 19:33:01,953 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 483 transitions. Word has length 145 [2022-11-18 19:33:01,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:01,953 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 483 transitions. [2022-11-18 19:33:01,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:01,954 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 483 transitions. [2022-11-18 19:33:01,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 19:33:01,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:01,959 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 19:33:01,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:33:01,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:01,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:01,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1231878604, now seen corresponding path program 1 times [2022-11-18 19:33:01,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:01,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160562026] [2022-11-18 19:33:01,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:01,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:02,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:33:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:02,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:33:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:02,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 19:33:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:02,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 19:33:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:02,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 19:33:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:02,360 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 19:33:02,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:02,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160562026] [2022-11-18 19:33:02,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160562026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:02,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:02,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:33:02,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197630363] [2022-11-18 19:33:02,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:02,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:33:02,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:02,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:33:02,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:33:02,373 INFO L87 Difference]: Start difference. First operand 309 states and 483 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:05,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:05,514 INFO L93 Difference]: Finished difference Result 1123 states and 1794 transitions. [2022-11-18 19:33:05,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:33:05,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 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 19:33:05,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:05,523 INFO L225 Difference]: With dead ends: 1123 [2022-11-18 19:33:05,523 INFO L226 Difference]: Without dead ends: 831 [2022-11-18 19:33:05,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:33:05,526 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 1232 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:05,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1248 Valid, 1086 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1858 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-18 19:33:05,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2022-11-18 19:33:05,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 612. [2022-11-18 19:33:05,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 555 states have (on average 1.581981981981982) internal successors, (878), 558 states have internal predecessors, (878), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-11-18 19:33:05,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 965 transitions. [2022-11-18 19:33:05,646 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 965 transitions. Word has length 145 [2022-11-18 19:33:05,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:05,649 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 965 transitions. [2022-11-18 19:33:05,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:05,650 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 965 transitions. [2022-11-18 19:33:05,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 19:33:05,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:05,657 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 19:33:05,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:33:05,658 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:05,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:05,658 INFO L85 PathProgramCache]: Analyzing trace with hash -569587000, now seen corresponding path program 1 times [2022-11-18 19:33:05,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:05,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609147697] [2022-11-18 19:33:05,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:05,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:05,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:33:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:05,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:33:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:05,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 19:33:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:05,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 19:33:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:05,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 19:33:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:05,943 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 19:33:05,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:05,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609147697] [2022-11-18 19:33:05,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609147697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:05,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:05,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:33:05,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514983279] [2022-11-18 19:33:05,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:05,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:33:05,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:05,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:33:05,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:33:05,947 INFO L87 Difference]: Start difference. First operand 612 states and 965 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:09,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:09,857 INFO L93 Difference]: Finished difference Result 1851 states and 2961 transitions. [2022-11-18 19:33:09,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:33:09,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 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 19:33:09,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:09,873 INFO L225 Difference]: With dead ends: 1851 [2022-11-18 19:33:09,873 INFO L226 Difference]: Without dead ends: 1256 [2022-11-18 19:33:09,879 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 19:33:09,885 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 1251 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 2816 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 2036 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:09,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1267 Valid, 2036 Invalid, 2877 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 2816 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-18 19:33:09,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2022-11-18 19:33:10,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 894. [2022-11-18 19:33:10,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 812 states have (on average 1.5751231527093597) internal successors, (1279), 816 states have internal predecessors, (1279), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-11-18 19:33:10,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1404 transitions. [2022-11-18 19:33:10,019 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1404 transitions. Word has length 145 [2022-11-18 19:33:10,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:10,020 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 1404 transitions. [2022-11-18 19:33:10,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:10,020 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1404 transitions. [2022-11-18 19:33:10,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 19:33:10,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:10,026 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 19:33:10,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:33:10,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:10,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:10,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1276183606, now seen corresponding path program 1 times [2022-11-18 19:33:10,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:10,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813472570] [2022-11-18 19:33:10,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:10,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:10,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:33:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:10,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:33:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:10,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 19:33:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:10,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 19:33:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:10,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 19:33:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:10,322 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 19:33:10,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:10,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813472570] [2022-11-18 19:33:10,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813472570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:10,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:10,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:33:10,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777136088] [2022-11-18 19:33:10,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:10,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:33:10,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:10,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:33:10,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:33:10,326 INFO L87 Difference]: Start difference. First operand 894 states and 1404 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:14,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:14,089 INFO L93 Difference]: Finished difference Result 2924 states and 4668 transitions. [2022-11-18 19:33:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:33:14,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 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 19:33:14,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:14,105 INFO L225 Difference]: With dead ends: 2924 [2022-11-18 19:33:14,106 INFO L226 Difference]: Without dead ends: 2047 [2022-11-18 19:33:14,109 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 19:33:14,122 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 1249 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 2812 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1265 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 2875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:14,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1265 Valid, 2034 Invalid, 2875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2812 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-18 19:33:14,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2022-11-18 19:33:14,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 1459. [2022-11-18 19:33:14,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1327 states have (on average 1.5689525244913338) internal successors, (2082), 1333 states have internal predecessors, (2082), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-11-18 19:33:14,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2287 transitions. [2022-11-18 19:33:14,302 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2287 transitions. Word has length 145 [2022-11-18 19:33:14,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:14,303 INFO L495 AbstractCegarLoop]: Abstraction has 1459 states and 2287 transitions. [2022-11-18 19:33:14,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:14,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2287 transitions. [2022-11-18 19:33:14,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 19:33:14,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:14,306 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 19:33:14,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:33:14,307 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:14,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:14,307 INFO L85 PathProgramCache]: Analyzing trace with hash -329145720, now seen corresponding path program 1 times [2022-11-18 19:33:14,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:14,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677857577] [2022-11-18 19:33:14,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:14,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:14,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:33:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:14,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:33:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:14,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 19:33:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:14,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 19:33:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:14,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 19:33:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:14,599 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 19:33:14,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:14,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677857577] [2022-11-18 19:33:14,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677857577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:14,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:14,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:33:14,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028036666] [2022-11-18 19:33:14,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:14,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:33:14,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:14,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:33:14,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:33:14,604 INFO L87 Difference]: Start difference. First operand 1459 states and 2287 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:18,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:18,472 INFO L93 Difference]: Finished difference Result 4989 states and 7935 transitions. [2022-11-18 19:33:18,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:33:18,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 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 19:33:18,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:18,490 INFO L225 Difference]: With dead ends: 4989 [2022-11-18 19:33:18,491 INFO L226 Difference]: Without dead ends: 3547 [2022-11-18 19:33:18,496 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 19:33:18,497 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 1245 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:18,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 2034 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-18 19:33:18,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3547 states. [2022-11-18 19:33:18,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3547 to 2590. [2022-11-18 19:33:18,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2590 states, 2358 states have (on average 1.5640373197625106) internal successors, (3688), 2368 states have internal predecessors, (3688), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-11-18 19:33:18,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2590 states to 2590 states and 4059 transitions. [2022-11-18 19:33:18,832 INFO L78 Accepts]: Start accepts. Automaton has 2590 states and 4059 transitions. Word has length 145 [2022-11-18 19:33:18,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:18,832 INFO L495 AbstractCegarLoop]: Abstraction has 2590 states and 4059 transitions. [2022-11-18 19:33:18,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:18,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2590 states and 4059 transitions. [2022-11-18 19:33:18,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 19:33:18,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:18,835 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 19:33:18,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:33:18,836 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:18,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:18,837 INFO L85 PathProgramCache]: Analyzing trace with hash 532687882, now seen corresponding path program 1 times [2022-11-18 19:33:18,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:18,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255275217] [2022-11-18 19:33:18,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:18,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:18,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:33:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:18,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:33:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:19,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 19:33:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:19,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 19:33:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:19,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 19:33:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:19,098 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 19:33:19,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:19,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255275217] [2022-11-18 19:33:19,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255275217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:19,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:19,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:33:19,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314320724] [2022-11-18 19:33:19,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:19,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:33:19,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:19,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:33:19,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:33:19,101 INFO L87 Difference]: Start difference. First operand 2590 states and 4059 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:23,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:23,203 INFO L93 Difference]: Finished difference Result 9118 states and 14485 transitions. [2022-11-18 19:33:23,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:33:23,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 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 19:33:23,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:23,234 INFO L225 Difference]: With dead ends: 9118 [2022-11-18 19:33:23,234 INFO L226 Difference]: Without dead ends: 6545 [2022-11-18 19:33:23,243 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 19:33:23,244 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 1247 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 2789 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:23,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1263 Valid, 2034 Invalid, 2852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2789 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-18 19:33:23,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6545 states. [2022-11-18 19:33:24,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6545 to 4857. [2022-11-18 19:33:24,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4857 states, 4425 states have (on average 1.560677966101695) internal successors, (6906), 4443 states have internal predecessors, (6906), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-11-18 19:33:24,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4857 states to 4857 states and 7627 transitions. [2022-11-18 19:33:24,036 INFO L78 Accepts]: Start accepts. Automaton has 4857 states and 7627 transitions. Word has length 145 [2022-11-18 19:33:24,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:24,036 INFO L495 AbstractCegarLoop]: Abstraction has 4857 states and 7627 transitions. [2022-11-18 19:33:24,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:24,037 INFO L276 IsEmpty]: Start isEmpty. Operand 4857 states and 7627 transitions. [2022-11-18 19:33:24,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 19:33:24,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:24,041 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 19:33:24,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:33:24,041 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:24,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:24,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1517721016, now seen corresponding path program 1 times [2022-11-18 19:33:24,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:24,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433737889] [2022-11-18 19:33:24,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:24,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:24,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:33:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:24,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:33:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:24,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 19:33:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:24,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 19:33:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:24,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 19:33:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:24,299 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 19:33:24,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:24,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433737889] [2022-11-18 19:33:24,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433737889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:24,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:24,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:33:24,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577985386] [2022-11-18 19:33:24,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:24,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:33:24,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:24,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:33:24,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:33:24,303 INFO L87 Difference]: Start difference. First operand 4857 states and 7627 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:29,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:29,013 INFO L93 Difference]: Finished difference Result 17360 states and 27615 transitions. [2022-11-18 19:33:29,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:33:29,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 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 19:33:29,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:29,078 INFO L225 Difference]: With dead ends: 17360 [2022-11-18 19:33:29,078 INFO L226 Difference]: Without dead ends: 12520 [2022-11-18 19:33:29,097 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 19:33:29,098 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 1334 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 2452 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:29,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 1333 Invalid, 2547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2452 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-18 19:33:29,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12520 states. [2022-11-18 19:33:30,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12520 to 9421. [2022-11-18 19:33:30,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9421 states, 8589 states have (on average 1.559436488531843) internal successors, (13394), 8623 states have internal predecessors, (13394), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-11-18 19:33:30,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9421 states to 9421 states and 14869 transitions. [2022-11-18 19:33:30,454 INFO L78 Accepts]: Start accepts. Automaton has 9421 states and 14869 transitions. Word has length 145 [2022-11-18 19:33:30,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:30,454 INFO L495 AbstractCegarLoop]: Abstraction has 9421 states and 14869 transitions. [2022-11-18 19:33:30,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:30,455 INFO L276 IsEmpty]: Start isEmpty. Operand 9421 states and 14869 transitions. [2022-11-18 19:33:30,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 19:33:30,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:30,463 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 19:33:30,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:33:30,463 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:30,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:30,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1684611078, now seen corresponding path program 1 times [2022-11-18 19:33:30,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:30,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480707530] [2022-11-18 19:33:30,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:30,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:30,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:33:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:30,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:33:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:30,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 19:33:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:30,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 19:33:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:30,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 19:33:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:30,684 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 19:33:30,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:30,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480707530] [2022-11-18 19:33:30,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480707530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:30,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:30,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:33:30,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772337349] [2022-11-18 19:33:30,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:30,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:33:30,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:30,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:33:30,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:33:30,687 INFO L87 Difference]: Start difference. First operand 9421 states and 14869 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:37,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:37,664 INFO L93 Difference]: Finished difference Result 33878 states and 54131 transitions. [2022-11-18 19:33:37,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:33:37,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 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 19:33:37,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:37,789 INFO L225 Difference]: With dead ends: 33878 [2022-11-18 19:33:37,790 INFO L226 Difference]: Without dead ends: 24474 [2022-11-18 19:33:37,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:33:37,838 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 1242 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 2748 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 2811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:37,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1258 Valid, 2034 Invalid, 2811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2748 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-18 19:33:37,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24474 states. [2022-11-18 19:33:40,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24474 to 18578. [2022-11-18 19:33:40,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18578 states, 16946 states have (on average 1.5585978992092528) internal successors, (26412), 17012 states have internal predecessors, (26412), 1177 states have call successors, (1177), 391 states have call predecessors, (1177), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-11-18 19:33:40,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18578 states to 18578 states and 29557 transitions. [2022-11-18 19:33:40,679 INFO L78 Accepts]: Start accepts. Automaton has 18578 states and 29557 transitions. Word has length 145 [2022-11-18 19:33:40,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:40,679 INFO L495 AbstractCegarLoop]: Abstraction has 18578 states and 29557 transitions. [2022-11-18 19:33:40,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:40,680 INFO L276 IsEmpty]: Start isEmpty. Operand 18578 states and 29557 transitions. [2022-11-18 19:33:40,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 19:33:40,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:40,693 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 19:33:40,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:33:40,693 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:40,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:40,694 INFO L85 PathProgramCache]: Analyzing trace with hash 402438792, now seen corresponding path program 1 times [2022-11-18 19:33:40,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:40,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339918620] [2022-11-18 19:33:40,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:40,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:40,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:33:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:40,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:33:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:40,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 19:33:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:40,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 19:33:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:40,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 19:33:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:40,925 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 19:33:40,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:40,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339918620] [2022-11-18 19:33:40,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339918620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:40,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:40,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:33:40,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409322777] [2022-11-18 19:33:40,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:40,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:33:40,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:40,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:33:40,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:33:40,929 INFO L87 Difference]: Start difference. First operand 18578 states and 29557 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:50,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:33:50,393 INFO L93 Difference]: Finished difference Result 66913 states and 107761 transitions. [2022-11-18 19:33:50,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:33:50,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 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 19:33:50,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:33:50,609 INFO L225 Difference]: With dead ends: 66913 [2022-11-18 19:33:50,610 INFO L226 Difference]: Without dead ends: 48352 [2022-11-18 19:33:50,694 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 19:33:50,696 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 1241 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 2735 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:33:50,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 2034 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2735 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-18 19:33:50,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48352 states. [2022-11-18 19:33:55,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48352 to 36955. [2022-11-18 19:33:55,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36955 states, 33723 states have (on average 1.5580464371497198) internal successors, (52542), 33853 states have internal predecessors, (52542), 2329 states have call successors, (2329), 775 states have call predecessors, (2329), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-11-18 19:33:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36955 states to 36955 states and 59513 transitions. [2022-11-18 19:33:55,567 INFO L78 Accepts]: Start accepts. Automaton has 36955 states and 59513 transitions. Word has length 145 [2022-11-18 19:33:55,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:33:55,568 INFO L495 AbstractCegarLoop]: Abstraction has 36955 states and 59513 transitions. [2022-11-18 19:33:55,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:33:55,568 INFO L276 IsEmpty]: Start isEmpty. Operand 36955 states and 59513 transitions. [2022-11-18 19:33:55,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 19:33:55,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:33:55,592 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 19:33:55,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:33:55,592 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:33:55,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:55,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1440036922, now seen corresponding path program 1 times [2022-11-18 19:33:55,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:55,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203041013] [2022-11-18 19:33:55,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:55,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:55,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 19:33:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:55,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:33:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:55,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 19:33:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:55,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 19:33:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:55,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 19:33:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:55,806 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 19:33:55,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:55,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203041013] [2022-11-18 19:33:55,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203041013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:55,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:55,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:33:55,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576886047] [2022-11-18 19:33:55,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:55,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:33:55,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:55,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:33:55,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:33:55,809 INFO L87 Difference]: Start difference. First operand 36955 states and 59513 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:34:11,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:11,159 INFO L93 Difference]: Finished difference Result 132984 states and 216871 transitions. [2022-11-18 19:34:11,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:34:11,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (6), 4 states have call predecessors, (6), 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 19:34:11,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:11,597 INFO L225 Difference]: With dead ends: 132984 [2022-11-18 19:34:11,597 INFO L226 Difference]: Without dead ends: 96046 [2022-11-18 19:34:11,963 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 19:34:11,964 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 1240 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 2722 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 2785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:11,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 2034 Invalid, 2785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2722 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-18 19:34:12,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96046 states.