./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2e63e44256bba8522bf99795cd1238c2e8ad8456659e8a545df838f8f88bd318 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 11:43:20,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:43:20,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:43:20,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:43:20,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:43:20,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:43:20,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:43:20,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:43:20,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:43:20,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:43:20,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:43:20,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:43:20,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:43:20,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:43:20,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:43:20,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:43:20,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:43:20,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:43:20,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:43:20,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:43:20,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:43:20,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:43:20,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:43:20,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:43:20,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:43:20,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:43:20,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:43:20,769 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:43:20,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:43:20,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:43:20,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:43:20,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:43:20,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:43:20,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:43:20,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:43:20,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:43:20,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:43:20,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:43:20,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:43:20,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:43:20,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:43:20,776 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 11:43:20,795 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:43:20,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:43:20,796 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:43:20,796 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:43:20,797 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:43:20,797 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:43:20,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:43:20,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:43:20,803 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:43:20,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:43:20,803 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:43:20,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:43:20,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:43:20,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:43:20,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:43:20,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:43:20,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:43:20,804 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:43:20,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:43:20,805 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:43:20,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:43:20,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:43:20,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:43:20,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:43:20,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:43:20,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:43:20,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:43:20,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:43:20,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:43:20,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:43:20,807 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:43:20,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:43:20,807 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:43:20,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:43:20,808 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:43:20,808 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e63e44256bba8522bf99795cd1238c2e8ad8456659e8a545df838f8f88bd318 [2022-12-13 11:43:20,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:43:21,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:43:21,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:43:21,003 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:43:21,003 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:43:21,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c [2022-12-13 11:43:23,518 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:43:23,740 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:43:23,740 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c [2022-12-13 11:43:23,752 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/data/a521c09e3/7253f54c7f5d491186e2ac7945dc591d/FLAG0c2466395 [2022-12-13 11:43:24,098 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/data/a521c09e3/7253f54c7f5d491186e2ac7945dc591d [2022-12-13 11:43:24,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:43:24,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:43:24,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:43:24,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:43:24,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:43:24,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:43:24" (1/1) ... [2022-12-13 11:43:24,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@339f3bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:24, skipping insertion in model container [2022-12-13 11:43:24,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:43:24" (1/1) ... [2022-12-13 11:43:24,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:43:24,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:43:24,404 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c[40412,40425] [2022-12-13 11:43:24,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:43:24,465 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:43:24,520 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/sv-benchmarks/c/product-lines/elevator_spec3_product01.cil.c[40412,40425] [2022-12-13 11:43:24,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:43:24,570 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:43:24,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:24 WrapperNode [2022-12-13 11:43:24,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:43:24,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:43:24,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:43:24,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:43:24,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:24" (1/1) ... [2022-12-13 11:43:24,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:24" (1/1) ... [2022-12-13 11:43:24,622 INFO L138 Inliner]: procedures = 86, calls = 334, calls flagged for inlining = 21, calls inlined = 18, statements flattened = 750 [2022-12-13 11:43:24,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:43:24,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:43:24,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:43:24,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:43:24,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:24" (1/1) ... [2022-12-13 11:43:24,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:24" (1/1) ... [2022-12-13 11:43:24,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:24" (1/1) ... [2022-12-13 11:43:24,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:24" (1/1) ... [2022-12-13 11:43:24,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:24" (1/1) ... [2022-12-13 11:43:24,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:24" (1/1) ... [2022-12-13 11:43:24,656 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:24" (1/1) ... [2022-12-13 11:43:24,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:24" (1/1) ... [2022-12-13 11:43:24,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:43:24,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:43:24,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:43:24,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:43:24,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:24" (1/1) ... [2022-12-13 11:43:24,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:43:24,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:43:24,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:43:24,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:43:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:43:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-12-13 11:43:24,725 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-12-13 11:43:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-13 11:43:24,725 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-13 11:43:24,725 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-13 11:43:24,726 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-13 11:43:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-12-13 11:43:24,726 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-12-13 11:43:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-13 11:43:24,726 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-13 11:43:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-13 11:43:24,726 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-13 11:43:24,726 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-13 11:43:24,727 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-13 11:43:24,727 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-13 11:43:24,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-13 11:43:24,727 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-13 11:43:24,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-13 11:43:24,727 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-13 11:43:24,727 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-13 11:43:24,728 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-13 11:43:24,728 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-13 11:43:24,728 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-12-13 11:43:24,728 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-12-13 11:43:24,728 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-13 11:43:24,728 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-13 11:43:24,728 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-12-13 11:43:24,728 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-12-13 11:43:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-13 11:43:24,729 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-13 11:43:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-13 11:43:24,729 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-13 11:43:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-13 11:43:24,729 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-13 11:43:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-13 11:43:24,729 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-13 11:43:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:43:24,730 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-12-13 11:43:24,730 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-12-13 11:43:24,730 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-13 11:43:24,730 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-13 11:43:24,730 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-13 11:43:24,730 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-13 11:43:24,730 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-13 11:43:24,730 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-13 11:43:24,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:43:24,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:43:24,731 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-13 11:43:24,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-13 11:43:24,841 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:43:24,842 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:43:25,562 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:43:25,570 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:43:25,570 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 11:43:25,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:43:25 BoogieIcfgContainer [2022-12-13 11:43:25,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:43:25,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:43:25,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:43:25,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:43:25,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:43:24" (1/3) ... [2022-12-13 11:43:25,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2383e562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:43:25, skipping insertion in model container [2022-12-13 11:43:25,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:43:24" (2/3) ... [2022-12-13 11:43:25,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2383e562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:43:25, skipping insertion in model container [2022-12-13 11:43:25,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:43:25" (3/3) ... [2022-12-13 11:43:25,578 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product01.cil.c [2022-12-13 11:43:25,592 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:43:25,592 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 11:43:25,635 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:43:25,639 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;@2529df48, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:43:25,639 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 11:43:25,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 546 states, 423 states have (on average 1.6926713947990544) internal successors, (716), 441 states have internal predecessors, (716), 98 states have call successors, (98), 23 states have call predecessors, (98), 23 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2022-12-13 11:43:25,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-13 11:43:25,666 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:43:25,666 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:43:25,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:43:25,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:25,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1392442594, now seen corresponding path program 1 times [2022-12-13 11:43:25,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:25,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139932732] [2022-12-13 11:43:25,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:25,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:26,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:43:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:26,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:43:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:26,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:43:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:26,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:43:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:26,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:43:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:26,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 11:43:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:26,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 11:43:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:26,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 11:43:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:26,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 11:43:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:26,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 11:43:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:26,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:43:26,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:43:26,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139932732] [2022-12-13 11:43:26,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139932732] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:43:26,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:43:26,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 11:43:26,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293590851] [2022-12-13 11:43:26,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:43:26,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:43:26,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:43:26,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:43:26,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:43:26,494 INFO L87 Difference]: Start difference. First operand has 546 states, 423 states have (on average 1.6926713947990544) internal successors, (716), 441 states have internal predecessors, (716), 98 states have call successors, (98), 23 states have call predecessors, (98), 23 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:43:32,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:43:32,568 INFO L93 Difference]: Finished difference Result 1437 states and 2504 transitions. [2022-12-13 11:43:32,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:43:32,570 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2022-12-13 11:43:32,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:43:32,589 INFO L225 Difference]: With dead ends: 1437 [2022-12-13 11:43:32,589 INFO L226 Difference]: Without dead ends: 891 [2022-12-13 11:43:32,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-13 11:43:32,602 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 2168 mSDsluCounter, 2682 mSDsCounter, 0 mSdLazyCounter, 5468 mSolverCounterSat, 706 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 6174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 706 IncrementalHoareTripleChecker+Valid, 5468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:43:32,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2271 Valid, 3177 Invalid, 6174 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [706 Valid, 5468 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-12-13 11:43:32,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-12-13 11:43:32,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 549. [2022-12-13 11:43:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.6830985915492958) internal successors, (717), 444 states have internal predecessors, (717), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (98), 94 states have call predecessors, (98), 96 states have call successors, (98) [2022-12-13 11:43:32,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 914 transitions. [2022-12-13 11:43:32,801 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 914 transitions. Word has length 85 [2022-12-13 11:43:32,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:43:32,802 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 914 transitions. [2022-12-13 11:43:32,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:43:32,802 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 914 transitions. [2022-12-13 11:43:32,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-13 11:43:32,807 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:43:32,808 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:43:32,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:43:32,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:43:32,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:32,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1014456678, now seen corresponding path program 1 times [2022-12-13 11:43:32,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:32,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043103244] [2022-12-13 11:43:32,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:32,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:33,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:43:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:33,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:43:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:33,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:43:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:33,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:43:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:33,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:43:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:33,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:43:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:33,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 11:43:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:33,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:43:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:33,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 11:43:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:33,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 11:43:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:33,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:43:33,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:43:33,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043103244] [2022-12-13 11:43:33,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043103244] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:43:33,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:43:33,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 11:43:33,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995646383] [2022-12-13 11:43:33,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:43:33,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:43:33,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:43:33,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:43:33,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:43:33,270 INFO L87 Difference]: Start difference. First operand 549 states and 914 transitions. Second operand has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:43:38,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:43:38,647 INFO L93 Difference]: Finished difference Result 1427 states and 2450 transitions. [2022-12-13 11:43:38,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 11:43:38,648 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2022-12-13 11:43:38,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:43:38,652 INFO L225 Difference]: With dead ends: 1427 [2022-12-13 11:43:38,652 INFO L226 Difference]: Without dead ends: 894 [2022-12-13 11:43:38,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-12-13 11:43:38,655 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 2120 mSDsluCounter, 2526 mSDsCounter, 0 mSdLazyCounter, 5523 mSolverCounterSat, 708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2223 SdHoareTripleChecker+Valid, 2996 SdHoareTripleChecker+Invalid, 6231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 708 IncrementalHoareTripleChecker+Valid, 5523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:43:38,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2223 Valid, 2996 Invalid, 6231 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [708 Valid, 5523 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-12-13 11:43:38,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2022-12-13 11:43:38,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 549. [2022-12-13 11:43:38,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.6807511737089202) internal successors, (716), 444 states have internal predecessors, (716), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (98), 94 states have call predecessors, (98), 96 states have call successors, (98) [2022-12-13 11:43:38,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 913 transitions. [2022-12-13 11:43:38,767 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 913 transitions. Word has length 86 [2022-12-13 11:43:38,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:43:38,767 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 913 transitions. [2022-12-13 11:43:38,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:43:38,767 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 913 transitions. [2022-12-13 11:43:38,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-13 11:43:38,770 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:43:38,770 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:43:38,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:43:38,770 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:43:38,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:38,771 INFO L85 PathProgramCache]: Analyzing trace with hash -966487335, now seen corresponding path program 1 times [2022-12-13 11:43:38,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:38,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943974325] [2022-12-13 11:43:38,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:38,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:38,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:43:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:39,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:43:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:39,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:43:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:39,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:43:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:39,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:43:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:39,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:43:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:39,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 11:43:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:39,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:43:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:39,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 11:43:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:39,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 11:43:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:39,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:43:39,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:43:39,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943974325] [2022-12-13 11:43:39,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943974325] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:43:39,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:43:39,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:43:39,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687886658] [2022-12-13 11:43:39,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:43:39,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:43:39,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:43:39,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:43:39,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:43:39,089 INFO L87 Difference]: Start difference. First operand 549 states and 913 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 11:43:44,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:43:44,669 INFO L93 Difference]: Finished difference Result 1418 states and 2430 transitions. [2022-12-13 11:43:44,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 11:43:44,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2022-12-13 11:43:44,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:43:44,673 INFO L225 Difference]: With dead ends: 1418 [2022-12-13 11:43:44,673 INFO L226 Difference]: Without dead ends: 854 [2022-12-13 11:43:44,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:43:44,675 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 1510 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 3091 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1612 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 3593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 3091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:43:44,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1612 Valid, 1682 Invalid, 3593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 3091 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-12-13 11:43:44,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-12-13 11:43:44,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 525. [2022-12-13 11:43:44,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 405 states have (on average 1.671604938271605) internal successors, (677), 421 states have internal predecessors, (677), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-12-13 11:43:44,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 870 transitions. [2022-12-13 11:43:44,769 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 870 transitions. Word has length 86 [2022-12-13 11:43:44,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:43:44,769 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 870 transitions. [2022-12-13 11:43:44,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 11:43:44,769 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 870 transitions. [2022-12-13 11:43:44,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-13 11:43:44,771 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:43:44,771 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:43:44,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:43:44,771 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:43:44,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:44,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1381384110, now seen corresponding path program 1 times [2022-12-13 11:43:44,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:44,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034082973] [2022-12-13 11:43:44,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:44,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:44,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:43:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:45,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:43:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:45,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:43:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:45,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:43:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:45,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:43:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:45,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 11:43:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:45,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 11:43:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:45,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 11:43:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:45,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 11:43:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:45,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:43:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:43:45,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:43:45,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034082973] [2022-12-13 11:43:45,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034082973] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:43:45,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:43:45,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 11:43:45,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428467958] [2022-12-13 11:43:45,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:43:45,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:43:45,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:43:45,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:43:45,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:43:45,140 INFO L87 Difference]: Start difference. First operand 525 states and 870 transitions. Second operand has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:43:50,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:43:50,657 INFO L93 Difference]: Finished difference Result 1381 states and 2361 transitions. [2022-12-13 11:43:50,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:43:50,657 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2022-12-13 11:43:50,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:43:50,663 INFO L225 Difference]: With dead ends: 1381 [2022-12-13 11:43:50,663 INFO L226 Difference]: Without dead ends: 848 [2022-12-13 11:43:50,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-13 11:43:50,666 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1063 mSDsluCounter, 2646 mSDsCounter, 0 mSdLazyCounter, 5534 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 3120 SdHoareTripleChecker+Invalid, 5845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 5534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:43:50,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 3120 Invalid, 5845 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [311 Valid, 5534 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-12-13 11:43:50,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-12-13 11:43:50,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 519. [2022-12-13 11:43:50,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 399 states have (on average 1.6641604010025062) internal successors, (664), 415 states have internal predecessors, (664), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-12-13 11:43:50,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 857 transitions. [2022-12-13 11:43:50,787 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 857 transitions. Word has length 87 [2022-12-13 11:43:50,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:43:50,787 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 857 transitions. [2022-12-13 11:43:50,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:43:50,788 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 857 transitions. [2022-12-13 11:43:50,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-13 11:43:50,792 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:43:50,792 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:43:50,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:43:50,793 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:43:50,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:50,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1747964786, now seen corresponding path program 1 times [2022-12-13 11:43:50,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:50,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702343218] [2022-12-13 11:43:50,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:50,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:51,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:43:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:51,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:43:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:51,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:43:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:51,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:43:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:51,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:43:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:51,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 11:43:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:51,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:43:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:51,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:43:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:51,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:43:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:51,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 11:43:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:51,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:43:51,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:43:51,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702343218] [2022-12-13 11:43:51,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702343218] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:43:51,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:43:51,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 11:43:51,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106330867] [2022-12-13 11:43:51,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:43:51,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:43:51,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:43:51,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:43:51,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:43:51,213 INFO L87 Difference]: Start difference. First operand 519 states and 857 transitions. Second operand has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:43:56,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:43:56,862 INFO L93 Difference]: Finished difference Result 1351 states and 2310 transitions. [2022-12-13 11:43:56,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:43:56,862 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2022-12-13 11:43:56,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:43:56,866 INFO L225 Difference]: With dead ends: 1351 [2022-12-13 11:43:56,866 INFO L226 Difference]: Without dead ends: 848 [2022-12-13 11:43:56,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-13 11:43:56,868 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 988 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 5388 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 5699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 5388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:43:56,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 3219 Invalid, 5699 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [311 Valid, 5388 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-12-13 11:43:56,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-12-13 11:43:56,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 519. [2022-12-13 11:43:56,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 399 states have (on average 1.6616541353383458) internal successors, (663), 415 states have internal predecessors, (663), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-12-13 11:43:56,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 856 transitions. [2022-12-13 11:43:56,972 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 856 transitions. Word has length 88 [2022-12-13 11:43:56,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:43:56,973 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 856 transitions. [2022-12-13 11:43:56,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:43:56,973 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 856 transitions. [2022-12-13 11:43:56,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-13 11:43:56,974 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:43:56,974 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:43:56,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:43:56,974 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:43:56,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:56,975 INFO L85 PathProgramCache]: Analyzing trace with hash 502990475, now seen corresponding path program 1 times [2022-12-13 11:43:56,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:56,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177222789] [2022-12-13 11:43:56,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:56,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:57,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:43:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:57,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:43:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:57,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:43:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:57,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:43:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:57,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:43:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:57,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 11:43:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:57,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 11:43:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:57,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 11:43:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:57,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 11:43:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:57,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 11:43:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:57,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:43:57,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:43:57,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177222789] [2022-12-13 11:43:57,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177222789] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:43:57,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:43:57,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 11:43:57,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32846616] [2022-12-13 11:43:57,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:43:57,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:43:57,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:43:57,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:43:57,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:43:57,346 INFO L87 Difference]: Start difference. First operand 519 states and 856 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:44:03,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:44:03,247 INFO L93 Difference]: Finished difference Result 1369 states and 2330 transitions. [2022-12-13 11:44:03,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:44:03,247 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2022-12-13 11:44:03,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:44:03,252 INFO L225 Difference]: With dead ends: 1369 [2022-12-13 11:44:03,252 INFO L226 Difference]: Without dead ends: 842 [2022-12-13 11:44:03,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-13 11:44:03,255 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1033 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 5404 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 5717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 5404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:44:03,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 3170 Invalid, 5717 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [313 Valid, 5404 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-12-13 11:44:03,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-12-13 11:44:03,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 513. [2022-12-13 11:44:03,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 393 states have (on average 1.6539440203562341) internal successors, (650), 409 states have internal predecessors, (650), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-12-13 11:44:03,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 843 transitions. [2022-12-13 11:44:03,387 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 843 transitions. Word has length 89 [2022-12-13 11:44:03,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:44:03,387 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 843 transitions. [2022-12-13 11:44:03,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:44:03,388 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 843 transitions. [2022-12-13 11:44:03,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 11:44:03,389 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:44:03,389 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:44:03,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:44:03,389 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:44:03,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:44:03,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1402442320, now seen corresponding path program 1 times [2022-12-13 11:44:03,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:44:03,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348898792] [2022-12-13 11:44:03,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:44:03,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:44:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:03,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:44:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:03,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:44:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:03,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:44:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:03,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:44:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:03,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:44:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:03,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 11:44:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:03,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:44:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:03,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 11:44:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:03,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 11:44:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:03,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 11:44:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:44:03,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:44:03,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348898792] [2022-12-13 11:44:03,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348898792] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:44:03,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:44:03,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 11:44:03,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057915978] [2022-12-13 11:44:03,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:44:03,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:44:03,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:44:03,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:44:03,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:44:03,747 INFO L87 Difference]: Start difference. First operand 513 states and 843 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:44:09,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:44:09,682 INFO L93 Difference]: Finished difference Result 1339 states and 2281 transitions. [2022-12-13 11:44:09,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:44:09,683 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 90 [2022-12-13 11:44:09,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:44:09,685 INFO L225 Difference]: With dead ends: 1339 [2022-12-13 11:44:09,686 INFO L226 Difference]: Without dead ends: 842 [2022-12-13 11:44:09,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-13 11:44:09,687 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 1000 mSDsluCounter, 2527 mSDsCounter, 0 mSdLazyCounter, 5237 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 5548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 5237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:44:09,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 2978 Invalid, 5548 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [311 Valid, 5237 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-12-13 11:44:09,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-12-13 11:44:09,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 513. [2022-12-13 11:44:09,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 393 states have (on average 1.6513994910941476) internal successors, (649), 409 states have internal predecessors, (649), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-12-13 11:44:09,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 842 transitions. [2022-12-13 11:44:09,803 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 842 transitions. Word has length 90 [2022-12-13 11:44:09,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:44:09,804 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 842 transitions. [2022-12-13 11:44:09,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:44:09,804 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 842 transitions. [2022-12-13 11:44:09,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 11:44:09,805 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:44:09,805 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:44:09,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:44:09,805 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:44:09,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:44:09,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1761311218, now seen corresponding path program 1 times [2022-12-13 11:44:09,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:44:09,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769094754] [2022-12-13 11:44:09,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:44:09,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:44:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:09,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:44:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:10,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:44:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:10,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:44:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:10,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:44:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:10,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:44:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:10,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 11:44:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:10,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 11:44:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:10,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 11:44:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:10,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 11:44:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:10,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 11:44:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:10,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:44:10,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:44:10,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769094754] [2022-12-13 11:44:10,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769094754] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:44:10,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:44:10,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 11:44:10,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876982832] [2022-12-13 11:44:10,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:44:10,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:44:10,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:44:10,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:44:10,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:44:10,135 INFO L87 Difference]: Start difference. First operand 513 states and 842 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:44:15,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:44:15,415 INFO L93 Difference]: Finished difference Result 1360 states and 2303 transitions. [2022-12-13 11:44:15,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 11:44:15,415 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2022-12-13 11:44:15,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:44:15,418 INFO L225 Difference]: With dead ends: 1360 [2022-12-13 11:44:15,418 INFO L226 Difference]: Without dead ends: 863 [2022-12-13 11:44:15,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-12-13 11:44:15,420 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 1949 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 5133 mSolverCounterSat, 695 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2051 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 5828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 695 IncrementalHoareTripleChecker+Valid, 5133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:44:15,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2051 Valid, 3050 Invalid, 5828 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [695 Valid, 5133 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-13 11:44:15,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2022-12-13 11:44:15,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 518. [2022-12-13 11:44:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 398 states have (on average 1.64321608040201) internal successors, (654), 414 states have internal predecessors, (654), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-12-13 11:44:15,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 847 transitions. [2022-12-13 11:44:15,538 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 847 transitions. Word has length 91 [2022-12-13 11:44:15,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:44:15,539 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 847 transitions. [2022-12-13 11:44:15,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:44:15,539 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 847 transitions. [2022-12-13 11:44:15,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 11:44:15,540 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:44:15,540 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:44:15,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:44:15,540 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:44:15,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:44:15,541 INFO L85 PathProgramCache]: Analyzing trace with hash -110382417, now seen corresponding path program 1 times [2022-12-13 11:44:15,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:44:15,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487676452] [2022-12-13 11:44:15,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:44:15,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:44:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:15,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:44:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:15,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:44:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:15,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:44:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:15,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:44:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:15,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:44:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:15,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 11:44:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:15,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 11:44:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:15,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 11:44:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:15,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 11:44:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:15,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 11:44:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:15,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:44:15,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:44:15,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487676452] [2022-12-13 11:44:15,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487676452] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:44:15,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:44:15,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 11:44:15,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901170645] [2022-12-13 11:44:15,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:44:15,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:44:15,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:44:15,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:44:15,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:44:15,860 INFO L87 Difference]: Start difference. First operand 518 states and 847 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:44:21,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:44:21,549 INFO L93 Difference]: Finished difference Result 1362 states and 2302 transitions. [2022-12-13 11:44:21,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:44:21,550 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2022-12-13 11:44:21,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:44:21,553 INFO L225 Difference]: With dead ends: 1362 [2022-12-13 11:44:21,553 INFO L226 Difference]: Without dead ends: 836 [2022-12-13 11:44:21,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-13 11:44:21,555 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 1006 mSDsluCounter, 2653 mSDsCounter, 0 mSdLazyCounter, 5337 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 5646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 5337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:44:21,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 3128 Invalid, 5646 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [309 Valid, 5337 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-12-13 11:44:21,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-12-13 11:44:21,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 507. [2022-12-13 11:44:21,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 387 states have (on average 1.6408268733850129) internal successors, (635), 403 states have internal predecessors, (635), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-12-13 11:44:21,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 828 transitions. [2022-12-13 11:44:21,683 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 828 transitions. Word has length 91 [2022-12-13 11:44:21,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:44:21,684 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 828 transitions. [2022-12-13 11:44:21,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:44:21,684 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 828 transitions. [2022-12-13 11:44:21,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 11:44:21,685 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:44:21,685 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:44:21,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 11:44:21,686 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:44:21,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:44:21,686 INFO L85 PathProgramCache]: Analyzing trace with hash 2098870037, now seen corresponding path program 1 times [2022-12-13 11:44:21,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:44:21,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629158866] [2022-12-13 11:44:21,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:44:21,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:44:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:21,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:44:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:21,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:44:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:21,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:44:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:21,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:44:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:21,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:44:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:21,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 11:44:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:21,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 11:44:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:21,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 11:44:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:22,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 11:44:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:22,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 11:44:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:22,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:44:22,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:44:22,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629158866] [2022-12-13 11:44:22,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629158866] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:44:22,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:44:22,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 11:44:22,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119293442] [2022-12-13 11:44:22,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:44:22,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:44:22,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:44:22,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:44:22,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:44:22,010 INFO L87 Difference]: Start difference. First operand 507 states and 828 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:44:27,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:44:27,706 INFO L93 Difference]: Finished difference Result 1339 states and 2262 transitions. [2022-12-13 11:44:27,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:44:27,707 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2022-12-13 11:44:27,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:44:27,710 INFO L225 Difference]: With dead ends: 1339 [2022-12-13 11:44:27,710 INFO L226 Difference]: Without dead ends: 848 [2022-12-13 11:44:27,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-12-13 11:44:27,711 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 1410 mSDsluCounter, 2617 mSDsCounter, 0 mSdLazyCounter, 5128 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 3093 SdHoareTripleChecker+Invalid, 5633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 5128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:44:27,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 3093 Invalid, 5633 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [505 Valid, 5128 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-12-13 11:44:27,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-12-13 11:44:27,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 513. [2022-12-13 11:44:27,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 393 states have (on average 1.6310432569974556) internal successors, (641), 409 states have internal predecessors, (641), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-12-13 11:44:27,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 834 transitions. [2022-12-13 11:44:27,836 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 834 transitions. Word has length 92 [2022-12-13 11:44:27,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:44:27,836 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 834 transitions. [2022-12-13 11:44:27,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:44:27,837 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 834 transitions. [2022-12-13 11:44:27,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 11:44:27,838 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:44:27,838 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:44:27,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 11:44:27,838 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:44:27,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:44:27,838 INFO L85 PathProgramCache]: Analyzing trace with hash -935180009, now seen corresponding path program 1 times [2022-12-13 11:44:27,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:44:27,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429808470] [2022-12-13 11:44:27,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:44:27,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:44:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:27,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:44:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:28,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:44:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:28,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:44:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:28,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:44:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:28,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:44:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:28,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 11:44:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:28,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 11:44:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:28,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 11:44:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:28,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 11:44:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:28,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 11:44:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:28,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:44:28,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:44:28,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429808470] [2022-12-13 11:44:28,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429808470] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:44:28,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:44:28,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 11:44:28,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209303969] [2022-12-13 11:44:28,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:44:28,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:44:28,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:44:28,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:44:28,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:44:28,154 INFO L87 Difference]: Start difference. First operand 513 states and 834 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:44:33,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:44:33,313 INFO L93 Difference]: Finished difference Result 1342 states and 2263 transitions. [2022-12-13 11:44:33,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 11:44:33,314 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2022-12-13 11:44:33,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:44:33,317 INFO L225 Difference]: With dead ends: 1342 [2022-12-13 11:44:33,317 INFO L226 Difference]: Without dead ends: 836 [2022-12-13 11:44:33,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-12-13 11:44:33,319 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 1446 mSDsluCounter, 2611 mSDsCounter, 0 mSdLazyCounter, 5017 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 3090 SdHoareTripleChecker+Invalid, 5523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 5017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:44:33,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 3090 Invalid, 5523 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [506 Valid, 5017 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-13 11:44:33,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-12-13 11:44:33,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 507. [2022-12-13 11:44:33,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 387 states have (on average 1.6382428940568476) internal successors, (634), 403 states have internal predecessors, (634), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-12-13 11:44:33,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 827 transitions. [2022-12-13 11:44:33,465 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 827 transitions. Word has length 92 [2022-12-13 11:44:33,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:44:33,466 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 827 transitions. [2022-12-13 11:44:33,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:44:33,466 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 827 transitions. [2022-12-13 11:44:33,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 11:44:33,467 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:44:33,467 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:44:33,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 11:44:33,467 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:44:33,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:44:33,467 INFO L85 PathProgramCache]: Analyzing trace with hash -511516108, now seen corresponding path program 1 times [2022-12-13 11:44:33,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:44:33,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665470870] [2022-12-13 11:44:33,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:44:33,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:44:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:33,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:44:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:33,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:44:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:33,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:44:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:33,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:44:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:33,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:44:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:33,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:44:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:33,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 11:44:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:33,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 11:44:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:33,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 11:44:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:33,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 11:44:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:33,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:44:33,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:44:33,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665470870] [2022-12-13 11:44:33,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665470870] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:44:33,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312866013] [2022-12-13 11:44:33,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:44:33,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:44:33,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:44:33,857 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:44:33,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:44:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:34,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 1550 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:44:34,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:44:34,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:44:34,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:44:34,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312866013] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:44:34,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:44:34,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-12-13 11:44:34,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140418387] [2022-12-13 11:44:34,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:44:34,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:44:34,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:44:34,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:44:34,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:44:34,091 INFO L87 Difference]: Start difference. First operand 507 states and 827 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:44:34,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:44:34,403 INFO L93 Difference]: Finished difference Result 1433 states and 2371 transitions. [2022-12-13 11:44:34,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:44:34,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 93 [2022-12-13 11:44:34,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:44:34,407 INFO L225 Difference]: With dead ends: 1433 [2022-12-13 11:44:34,407 INFO L226 Difference]: Without dead ends: 944 [2022-12-13 11:44:34,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:44:34,408 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 773 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:44:34,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 1634 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:44:34,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-12-13 11:44:34,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 929. [2022-12-13 11:44:34,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 716 states have (on average 1.6536312849162011) internal successors, (1184), 747 states have internal predecessors, (1184), 172 states have call successors, (172), 41 states have call predecessors, (172), 40 states have return successors, (174), 166 states have call predecessors, (174), 169 states have call successors, (174) [2022-12-13 11:44:34,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1530 transitions. [2022-12-13 11:44:34,651 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1530 transitions. Word has length 93 [2022-12-13 11:44:34,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:44:34,652 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1530 transitions. [2022-12-13 11:44:34,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:44:34,652 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1530 transitions. [2022-12-13 11:44:34,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 11:44:34,653 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:44:34,653 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:44:34,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:44:34,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:44:34,855 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:44:34,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:44:34,856 INFO L85 PathProgramCache]: Analyzing trace with hash 807187692, now seen corresponding path program 1 times [2022-12-13 11:44:34,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:44:34,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925754734] [2022-12-13 11:44:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:44:34,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:44:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:35,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:44:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:35,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:44:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:35,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:44:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:35,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:44:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:35,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:44:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:35,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:44:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:35,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 11:44:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:35,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 11:44:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:35,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 11:44:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:35,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 11:44:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:44:35,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:44:35,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925754734] [2022-12-13 11:44:35,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925754734] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:44:35,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040063824] [2022-12-13 11:44:35,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:44:35,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:44:35,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:44:35,237 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:44:35,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:44:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:35,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:44:35,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:44:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:44:35,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:44:35,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040063824] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:44:35,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:44:35,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-12-13 11:44:35,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478049132] [2022-12-13 11:44:35,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:44:35,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:44:35,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:44:35,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:44:35,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:44:35,453 INFO L87 Difference]: Start difference. First operand 929 states and 1530 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:44:35,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:44:35,907 INFO L93 Difference]: Finished difference Result 2277 states and 3779 transitions. [2022-12-13 11:44:35,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:44:35,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2022-12-13 11:44:35,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:44:35,912 INFO L225 Difference]: With dead ends: 2277 [2022-12-13 11:44:35,912 INFO L226 Difference]: Without dead ends: 1366 [2022-12-13 11:44:35,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:44:35,915 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 772 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:44:35,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1686 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:44:35,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2022-12-13 11:44:36,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1318. [2022-12-13 11:44:36,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1018 states have (on average 1.6679764243614932) internal successors, (1698), 1064 states have internal predecessors, (1698), 243 states have call successors, (243), 56 states have call predecessors, (243), 56 states have return successors, (250), 236 states have call predecessors, (250), 240 states have call successors, (250) [2022-12-13 11:44:36,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 2191 transitions. [2022-12-13 11:44:36,268 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 2191 transitions. Word has length 94 [2022-12-13 11:44:36,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:44:36,268 INFO L495 AbstractCegarLoop]: Abstraction has 1318 states and 2191 transitions. [2022-12-13 11:44:36,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 11:44:36,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 2191 transitions. [2022-12-13 11:44:36,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-13 11:44:36,271 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:44:36,271 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:44:36,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 11:44:36,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 11:44:36,473 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:44:36,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:44:36,473 INFO L85 PathProgramCache]: Analyzing trace with hash -174226734, now seen corresponding path program 1 times [2022-12-13 11:44:36,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:44:36,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704104095] [2022-12-13 11:44:36,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:44:36,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:44:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:36,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:44:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:36,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:44:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:36,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:44:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:36,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:44:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:36,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:44:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:36,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:44:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:36,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:44:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:36,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:44:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:36,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:44:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:36,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:44:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:36,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 11:44:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:36,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:44:36,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:44:36,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704104095] [2022-12-13 11:44:36,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704104095] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:44:36,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:44:36,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 11:44:36,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285833318] [2022-12-13 11:44:36,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:44:36,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 11:44:36,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:44:36,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 11:44:36,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 11:44:36,831 INFO L87 Difference]: Start difference. First operand 1318 states and 2191 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 11:44:54,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:44:54,410 INFO L93 Difference]: Finished difference Result 6602 states and 12169 transitions. [2022-12-13 11:44:54,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 11:44:54,411 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 96 [2022-12-13 11:44:54,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:44:54,436 INFO L225 Difference]: With dead ends: 6602 [2022-12-13 11:44:54,436 INFO L226 Difference]: Without dead ends: 5302 [2022-12-13 11:44:54,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-12-13 11:44:54,442 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 4670 mSDsluCounter, 2759 mSDsCounter, 0 mSdLazyCounter, 8150 mSolverCounterSat, 2755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4779 SdHoareTripleChecker+Valid, 3477 SdHoareTripleChecker+Invalid, 10905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2755 IncrementalHoareTripleChecker+Valid, 8150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:44:54,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4779 Valid, 3477 Invalid, 10905 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2755 Valid, 8150 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2022-12-13 11:44:54,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5302 states. [2022-12-13 11:44:55,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5302 to 3149. [2022-12-13 11:44:55,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3149 states, 2283 states have (on average 1.6386333771353483) internal successors, (3741), 2467 states have internal predecessors, (3741), 721 states have call successors, (721), 106 states have call predecessors, (721), 144 states have return successors, (1148), 719 states have call predecessors, (1148), 717 states have call successors, (1148) [2022-12-13 11:44:55,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3149 states to 3149 states and 5610 transitions. [2022-12-13 11:44:55,814 INFO L78 Accepts]: Start accepts. Automaton has 3149 states and 5610 transitions. Word has length 96 [2022-12-13 11:44:55,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:44:55,814 INFO L495 AbstractCegarLoop]: Abstraction has 3149 states and 5610 transitions. [2022-12-13 11:44:55,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 11:44:55,814 INFO L276 IsEmpty]: Start isEmpty. Operand 3149 states and 5610 transitions. [2022-12-13 11:44:55,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 11:44:55,816 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:44:55,817 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:44:55,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 11:44:55,817 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:44:55,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:44:55,817 INFO L85 PathProgramCache]: Analyzing trace with hash 211190178, now seen corresponding path program 1 times [2022-12-13 11:44:55,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:44:55,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460664750] [2022-12-13 11:44:55,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:44:55,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:44:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:56,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:44:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:56,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:44:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:56,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:44:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:56,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:44:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:56,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:44:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:56,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:44:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:56,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:44:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:56,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:44:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:56,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:44:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:56,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:44:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:56,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 11:44:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:44:56,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:44:56,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460664750] [2022-12-13 11:44:56,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460664750] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:44:56,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770248515] [2022-12-13 11:44:56,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:44:56,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:44:56,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:44:56,146 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:44:56,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:44:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:56,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:44:56,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:44:56,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:44:56,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:44:56,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770248515] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:44:56,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:44:56,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-12-13 11:44:56,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461833495] [2022-12-13 11:44:56,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:44:56,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:44:56,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:44:56,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:44:56,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:44:56,374 INFO L87 Difference]: Start difference. First operand 3149 states and 5610 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 11:44:59,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:44:59,475 INFO L93 Difference]: Finished difference Result 9157 states and 16523 transitions. [2022-12-13 11:44:59,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:44:59,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2022-12-13 11:44:59,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:44:59,498 INFO L225 Difference]: With dead ends: 9157 [2022-12-13 11:44:59,498 INFO L226 Difference]: Without dead ends: 6027 [2022-12-13 11:44:59,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:44:59,512 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 682 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:44:59,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1677 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:44:59,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6027 states. [2022-12-13 11:45:02,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6027 to 5990. [2022-12-13 11:45:02,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5990 states, 4316 states have (on average 1.607970342910102) internal successors, (6940), 4682 states have internal predecessors, (6940), 1390 states have call successors, (1390), 206 states have call predecessors, (1390), 283 states have return successors, (2335), 1389 states have call predecessors, (2335), 1384 states have call successors, (2335) [2022-12-13 11:45:02,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5990 states to 5990 states and 10665 transitions. [2022-12-13 11:45:02,088 INFO L78 Accepts]: Start accepts. Automaton has 5990 states and 10665 transitions. Word has length 97 [2022-12-13 11:45:02,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:45:02,088 INFO L495 AbstractCegarLoop]: Abstraction has 5990 states and 10665 transitions. [2022-12-13 11:45:02,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 11:45:02,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5990 states and 10665 transitions. [2022-12-13 11:45:02,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 11:45:02,090 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:45:02,091 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:45:02,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 11:45:02,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:45:02,292 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:45:02,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:45:02,293 INFO L85 PathProgramCache]: Analyzing trace with hash -6863433, now seen corresponding path program 1 times [2022-12-13 11:45:02,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:45:02,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342399542] [2022-12-13 11:45:02,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:45:02,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:45:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:02,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:45:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:02,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:45:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:02,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:45:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:02,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:45:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:02,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:45:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:02,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:45:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:02,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:45:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:02,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:45:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:02,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:45:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:02,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:45:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:02,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 11:45:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:02,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 11:45:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:45:02,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:45:02,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342399542] [2022-12-13 11:45:02,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342399542] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:45:02,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899413023] [2022-12-13 11:45:02,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:45:02,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:45:02,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:45:02,670 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:45:02,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 11:45:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:02,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 1583 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 11:45:02,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:45:02,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:45:02,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:45:02,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899413023] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:45:02,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:45:02,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 12 [2022-12-13 11:45:02,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066955257] [2022-12-13 11:45:02,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:45:02,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:45:02,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:45:02,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:45:02,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-13 11:45:02,902 INFO L87 Difference]: Start difference. First operand 5990 states and 10665 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 11:45:08,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:45:08,135 INFO L93 Difference]: Finished difference Result 17856 states and 32104 transitions. [2022-12-13 11:45:08,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:45:08,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-12-13 11:45:08,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:45:08,178 INFO L225 Difference]: With dead ends: 17856 [2022-12-13 11:45:08,178 INFO L226 Difference]: Without dead ends: 11887 [2022-12-13 11:45:08,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-13 11:45:08,198 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 814 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:45:08,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:45:08,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2022-12-13 11:45:13,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 11784. [2022-12-13 11:45:13,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11784 states, 8508 states have (on average 1.6110719322990128) internal successors, (13707), 9220 states have internal predecessors, (13707), 2720 states have call successors, (2720), 394 states have call predecessors, (2720), 555 states have return successors, (4652), 2739 states have call predecessors, (4652), 2710 states have call successors, (4652) [2022-12-13 11:45:13,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11784 states to 11784 states and 21079 transitions. [2022-12-13 11:45:13,328 INFO L78 Accepts]: Start accepts. Automaton has 11784 states and 21079 transitions. Word has length 102 [2022-12-13 11:45:13,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:45:13,329 INFO L495 AbstractCegarLoop]: Abstraction has 11784 states and 21079 transitions. [2022-12-13 11:45:13,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 11:45:13,329 INFO L276 IsEmpty]: Start isEmpty. Operand 11784 states and 21079 transitions. [2022-12-13 11:45:13,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 11:45:13,331 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:45:13,331 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:45:13,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 11:45:13,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 11:45:13,532 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:45:13,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:45:13,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1017980683, now seen corresponding path program 1 times [2022-12-13 11:45:13,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:45:13,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38130408] [2022-12-13 11:45:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:45:13,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:45:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:13,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:45:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:13,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:45:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:13,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:45:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:13,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:45:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:13,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:45:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:13,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:45:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:13,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:45:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:13,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:45:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:13,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:45:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:13,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:45:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:13,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 11:45:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:13,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 11:45:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:13,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:45:13,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:45:13,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38130408] [2022-12-13 11:45:13,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38130408] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:45:13,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519141664] [2022-12-13 11:45:13,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:45:13,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:45:13,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:45:13,829 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:45:13,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 11:45:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:14,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 1582 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 11:45:14,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:45:14,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:45:14,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:45:14,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519141664] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:45:14,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:45:14,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-12-13 11:45:14,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653197902] [2022-12-13 11:45:14,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:45:14,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:45:14,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:45:14,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:45:14,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-12-13 11:45:14,077 INFO L87 Difference]: Start difference. First operand 11784 states and 21079 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 11:45:20,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:45:20,928 INFO L93 Difference]: Finished difference Result 24013 states and 43453 transitions. [2022-12-13 11:45:20,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 11:45:20,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 102 [2022-12-13 11:45:20,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:45:20,974 INFO L225 Difference]: With dead ends: 24013 [2022-12-13 11:45:20,974 INFO L226 Difference]: Without dead ends: 12247 [2022-12-13 11:45:21,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-12-13 11:45:21,015 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 989 mSDsluCounter, 2702 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 3639 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:45:21,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 3639 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:45:21,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12247 states. [2022-12-13 11:45:25,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12247 to 10479. [2022-12-13 11:45:25,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10479 states, 7607 states have (on average 1.5970816353358748) internal successors, (12149), 8210 states have internal predecessors, (12149), 2370 states have call successors, (2370), 358 states have call predecessors, (2370), 501 states have return successors, (3994), 2386 states have call predecessors, (3994), 2360 states have call successors, (3994) [2022-12-13 11:45:25,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10479 states to 10479 states and 18513 transitions. [2022-12-13 11:45:25,414 INFO L78 Accepts]: Start accepts. Automaton has 10479 states and 18513 transitions. Word has length 102 [2022-12-13 11:45:25,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:45:25,414 INFO L495 AbstractCegarLoop]: Abstraction has 10479 states and 18513 transitions. [2022-12-13 11:45:25,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 11:45:25,414 INFO L276 IsEmpty]: Start isEmpty. Operand 10479 states and 18513 transitions. [2022-12-13 11:45:25,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 11:45:25,416 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:45:25,416 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:45:25,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 11:45:25,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad8b83-4a0c-4858-acc6-0aa27fa77b86/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 11:45:25,617 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:45:25,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:45:25,617 INFO L85 PathProgramCache]: Analyzing trace with hash -917707351, now seen corresponding path program 1 times [2022-12-13 11:45:25,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:45:25,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739261053] [2022-12-13 11:45:25,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:45:25,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:45:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:25,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:45:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:25,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:45:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:25,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:45:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:25,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:45:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:25,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:45:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:25,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:45:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:25,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:45:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:25,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 11:45:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:25,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 11:45:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:25,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:45:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:25,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 11:45:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:25,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 11:45:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:25,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:45:25,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:45:25,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739261053] [2022-12-13 11:45:25,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739261053] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:45:25,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:45:25,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:45:25,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742023152] [2022-12-13 11:45:25,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:45:25,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:45:25,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:45:25,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:45:25,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:45:25,867 INFO L87 Difference]: Start difference. First operand 10479 states and 18513 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 11:45:37,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:45:37,817 INFO L93 Difference]: Finished difference Result 24082 states and 43824 transitions. [2022-12-13 11:45:37,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:45:37,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-12-13 11:45:37,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:45:37,874 INFO L225 Difference]: With dead ends: 24082 [2022-12-13 11:45:37,874 INFO L226 Difference]: Without dead ends: 13621 [2022-12-13 11:45:37,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-12-13 11:45:37,924 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 1367 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 2833 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 3324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 2833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:45:37,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1805 Invalid, 3324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 2833 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-12-13 11:45:37,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13621 states. [2022-12-13 11:45:42,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13621 to 10621. [2022-12-13 11:45:42,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10621 states, 7719 states have (on average 1.5904909962430367) internal successors, (12277), 8322 states have internal predecessors, (12277), 2380 states have call successors, (2380), 366 states have call predecessors, (2380), 521 states have return successors, (4049), 2392 states have call predecessors, (4049), 2370 states have call successors, (4049) [2022-12-13 11:45:42,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10621 states to 10621 states and 18706 transitions. [2022-12-13 11:45:42,653 INFO L78 Accepts]: Start accepts. Automaton has 10621 states and 18706 transitions. Word has length 102 [2022-12-13 11:45:42,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:45:42,654 INFO L495 AbstractCegarLoop]: Abstraction has 10621 states and 18706 transitions. [2022-12-13 11:45:42,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 11:45:42,654 INFO L276 IsEmpty]: Start isEmpty. Operand 10621 states and 18706 transitions. [2022-12-13 11:45:42,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-13 11:45:42,656 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:45:42,656 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:45:42,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 11:45:42,656 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:45:42,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:45:42,656 INFO L85 PathProgramCache]: Analyzing trace with hash -810615909, now seen corresponding path program 1 times [2022-12-13 11:45:42,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:45:42,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210891170] [2022-12-13 11:45:42,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:45:42,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:45:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:42,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:45:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:42,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:45:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:42,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:45:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:42,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:45:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:42,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:45:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:42,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:45:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:42,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:45:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:42,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:45:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:42,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 11:45:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:42,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 11:45:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:42,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:45:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:42,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 11:45:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:42,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 11:45:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:42,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 11:45:42,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:45:42,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210891170] [2022-12-13 11:45:42,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210891170] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:45:42,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:45:42,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 11:45:42,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024888956] [2022-12-13 11:45:42,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:45:42,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 11:45:42,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:45:42,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 11:45:42,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 11:45:42,931 INFO L87 Difference]: Start difference. First operand 10621 states and 18706 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 11:46:19,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:19,466 INFO L93 Difference]: Finished difference Result 46846 states and 91993 transitions. [2022-12-13 11:46:19,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 11:46:19,467 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2022-12-13 11:46:19,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:19,656 INFO L225 Difference]: With dead ends: 46846 [2022-12-13 11:46:19,656 INFO L226 Difference]: Without dead ends: 36243 [2022-12-13 11:46:19,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-12-13 11:46:19,715 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 4626 mSDsluCounter, 3133 mSDsCounter, 0 mSdLazyCounter, 8198 mSolverCounterSat, 2763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4735 SdHoareTripleChecker+Valid, 3990 SdHoareTripleChecker+Invalid, 10961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2763 IncrementalHoareTripleChecker+Valid, 8198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:46:19,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4735 Valid, 3990 Invalid, 10961 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2763 Valid, 8198 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2022-12-13 11:46:19,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36243 states. [2022-12-13 11:46:29,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36243 to 21105. [2022-12-13 11:46:29,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21105 states, 15344 states have (on average 1.5872002085505734) internal successors, (24354), 16541 states have internal predecessors, (24354), 4715 states have call successors, (4715), 726 states have call predecessors, (4715), 1045 states have return successors, (8855), 4757 states have call predecessors, (8855), 4697 states have call successors, (8855) [2022-12-13 11:46:29,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21105 states to 21105 states and 37924 transitions. [2022-12-13 11:46:29,862 INFO L78 Accepts]: Start accepts. Automaton has 21105 states and 37924 transitions. Word has length 110 [2022-12-13 11:46:29,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:29,862 INFO L495 AbstractCegarLoop]: Abstraction has 21105 states and 37924 transitions. [2022-12-13 11:46:29,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 11:46:29,862 INFO L276 IsEmpty]: Start isEmpty. Operand 21105 states and 37924 transitions. [2022-12-13 11:46:29,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 11:46:29,864 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:29,865 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:29,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 11:46:29,865 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:29,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:29,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1189412675, now seen corresponding path program 1 times [2022-12-13 11:46:29,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:29,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352535553] [2022-12-13 11:46:29,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:29,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:29,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:46:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:30,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:46:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:30,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:46:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:30,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:46:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:30,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:46:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:30,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:46:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:30,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:46:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:30,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:46:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:30,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:46:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:30,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 11:46:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:30,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:46:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:30,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 11:46:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:30,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:46:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 11:46:30,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:30,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352535553] [2022-12-13 11:46:30,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352535553] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:30,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:30,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:46:30,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443190303] [2022-12-13 11:46:30,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:30,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:46:30,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:30,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:46:30,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:46:30,071 INFO L87 Difference]: Start difference. First operand 21105 states and 37924 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 11:46:49,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:49,601 INFO L93 Difference]: Finished difference Result 47968 states and 90895 transitions. [2022-12-13 11:46:49,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:46:49,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2022-12-13 11:46:49,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:49,729 INFO L225 Difference]: With dead ends: 47968 [2022-12-13 11:46:49,729 INFO L226 Difference]: Without dead ends: 26881 [2022-12-13 11:46:49,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-12-13 11:46:49,862 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 1428 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 2721 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 3221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 2721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:46:49,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1532 Valid, 1746 Invalid, 3221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 2721 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-12-13 11:46:49,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26881 states. [2022-12-13 11:46:59,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26881 to 21185. [2022-12-13 11:46:59,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21185 states, 15416 states have (on average 1.5849766476388167) internal successors, (24434), 16597 states have internal predecessors, (24434), 4715 states have call successors, (4715), 758 states have call predecessors, (4715), 1053 states have return successors, (8815), 4749 states have call predecessors, (8815), 4697 states have call successors, (8815) [2022-12-13 11:46:59,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21185 states to 21185 states and 37964 transitions. [2022-12-13 11:46:59,925 INFO L78 Accepts]: Start accepts. Automaton has 21185 states and 37964 transitions. Word has length 111 [2022-12-13 11:46:59,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:59,925 INFO L495 AbstractCegarLoop]: Abstraction has 21185 states and 37964 transitions. [2022-12-13 11:46:59,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 11:46:59,926 INFO L276 IsEmpty]: Start isEmpty. Operand 21185 states and 37964 transitions. [2022-12-13 11:46:59,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-12-13 11:46:59,928 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:59,928 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:59,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 11:46:59,928 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:59,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:59,929 INFO L85 PathProgramCache]: Analyzing trace with hash 229059499, now seen corresponding path program 1 times [2022-12-13 11:46:59,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:59,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068197235] [2022-12-13 11:46:59,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:59,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:00,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:47:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:00,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:47:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:00,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:47:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:00,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:47:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:00,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:47:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:00,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:47:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:00,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:47:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:00,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:47:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:00,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 11:47:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:00,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 11:47:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:00,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 11:47:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:00,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:47:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:00,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:47:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:00,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 11:47:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:00,240 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 11:47:00,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:47:00,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068197235] [2022-12-13 11:47:00,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068197235] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:47:00,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:47:00,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 11:47:00,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825708918] [2022-12-13 11:47:00,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:47:00,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 11:47:00,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:47:00,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 11:47:00,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 11:47:00,241 INFO L87 Difference]: Start difference. First operand 21185 states and 37964 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 11:48:06,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:48:06,801 INFO L93 Difference]: Finished difference Result 93694 states and 195787 transitions. [2022-12-13 11:48:06,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 11:48:06,801 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2022-12-13 11:48:06,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:48:07,366 INFO L225 Difference]: With dead ends: 93694 [2022-12-13 11:48:07,366 INFO L226 Difference]: Without dead ends: 72527 [2022-12-13 11:48:07,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-12-13 11:48:07,522 INFO L413 NwaCegarLoop]: 804 mSDtfsCounter, 2790 mSDsluCounter, 3084 mSDsCounter, 0 mSdLazyCounter, 8766 mSolverCounterSat, 1944 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2900 SdHoareTripleChecker+Valid, 3888 SdHoareTripleChecker+Invalid, 10710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1944 IncrementalHoareTripleChecker+Valid, 8766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:48:07,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2900 Valid, 3888 Invalid, 10710 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1944 Valid, 8766 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2022-12-13 11:48:07,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72527 states. [2022-12-13 11:48:29,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72527 to 42309. [2022-12-13 11:48:29,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42309 states, 30795 states have (on average 1.5817827569410619) internal successors, (48711), 33148 states have internal predecessors, (48711), 9396 states have call successors, (9396), 1510 states have call predecessors, (9396), 2117 states have return successors, (19829), 9490 states have call predecessors, (19829), 9362 states have call successors, (19829) [2022-12-13 11:48:29,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42309 states to 42309 states and 77936 transitions. [2022-12-13 11:48:29,711 INFO L78 Accepts]: Start accepts. Automaton has 42309 states and 77936 transitions. Word has length 120 [2022-12-13 11:48:29,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:48:29,711 INFO L495 AbstractCegarLoop]: Abstraction has 42309 states and 77936 transitions. [2022-12-13 11:48:29,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 11:48:29,711 INFO L276 IsEmpty]: Start isEmpty. Operand 42309 states and 77936 transitions. [2022-12-13 11:48:29,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-13 11:48:29,714 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:48:29,714 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:48:29,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 11:48:29,714 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:48:29,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:48:29,715 INFO L85 PathProgramCache]: Analyzing trace with hash 792296293, now seen corresponding path program 1 times [2022-12-13 11:48:29,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:48:29,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680442716] [2022-12-13 11:48:29,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:48:29,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:48:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:29,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:48:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:29,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:48:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:29,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:48:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:29,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:48:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:29,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:48:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:29,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:48:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:29,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:48:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:29,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:48:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:29,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 11:48:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:29,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 11:48:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:29,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 11:48:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:29,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:48:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:29,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 11:48:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:29,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 11:48:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:29,924 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 11:48:29,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:48:29,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680442716] [2022-12-13 11:48:29,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680442716] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:48:29,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:48:29,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:48:29,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094418490] [2022-12-13 11:48:29,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:48:29,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:48:29,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:48:29,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:48:29,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:48:29,926 INFO L87 Difference]: Start difference. First operand 42309 states and 77936 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 11:49:05,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:49:05,992 INFO L93 Difference]: Finished difference Result 95996 states and 192208 transitions. [2022-12-13 11:49:05,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:49:05,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 121 [2022-12-13 11:49:05,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:49:06,328 INFO L225 Difference]: With dead ends: 95996 [2022-12-13 11:49:06,329 INFO L226 Difference]: Without dead ends: 53705 [2022-12-13 11:49:06,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-12-13 11:49:06,720 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 1891 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 2688 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 3368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 2688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:49:06,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1994 Valid, 1713 Invalid, 3368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [680 Valid, 2688 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-12-13 11:49:06,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53705 states. [2022-12-13 11:49:27,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53705 to 42469. [2022-12-13 11:49:28,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42469 states, 30939 states have (on average 1.5795921005850222) internal successors, (48871), 33292 states have internal predecessors, (48871), 9396 states have call successors, (9396), 1542 states have call predecessors, (9396), 2133 states have return successors, (19773), 9474 states have call predecessors, (19773), 9362 states have call successors, (19773) [2022-12-13 11:49:28,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42469 states to 42469 states and 78040 transitions. [2022-12-13 11:49:28,439 INFO L78 Accepts]: Start accepts. Automaton has 42469 states and 78040 transitions. Word has length 121 [2022-12-13 11:49:28,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:49:28,440 INFO L495 AbstractCegarLoop]: Abstraction has 42469 states and 78040 transitions. [2022-12-13 11:49:28,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 11:49:28,440 INFO L276 IsEmpty]: Start isEmpty. Operand 42469 states and 78040 transitions. [2022-12-13 11:49:28,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-12-13 11:49:28,443 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:49:28,444 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:49:28,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 11:49:28,444 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:49:28,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:49:28,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1346508551, now seen corresponding path program 1 times [2022-12-13 11:49:28,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:49:28,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605923009] [2022-12-13 11:49:28,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:49:28,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:49:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:28,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:49:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:28,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:49:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:28,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:49:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:28,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:49:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:28,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:49:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:28,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:49:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:28,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:49:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:28,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:49:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:28,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 11:49:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:28,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 11:49:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:28,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 11:49:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:28,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 11:49:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:28,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:49:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:28,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 11:49:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:28,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 11:49:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 11:49:28,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:49:28,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605923009] [2022-12-13 11:49:28,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605923009] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:49:28,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:49:28,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 11:49:28,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356180035] [2022-12-13 11:49:28,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:49:28,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 11:49:28,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:49:28,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 11:49:28,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 11:49:28,724 INFO L87 Difference]: Start difference. First operand 42469 states and 78040 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-13 11:51:40,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:51:40,251 INFO L93 Difference]: Finished difference Result 187898 states and 429785 transitions. [2022-12-13 11:51:40,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 11:51:40,253 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 131 [2022-12-13 11:51:40,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:51:41,615 INFO L225 Difference]: With dead ends: 187898 [2022-12-13 11:51:41,616 INFO L226 Difference]: Without dead ends: 145447 [2022-12-13 11:51:42,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-12-13 11:51:42,215 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 2782 mSDsluCounter, 3162 mSDsCounter, 0 mSdLazyCounter, 8793 mSolverCounterSat, 1940 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2893 SdHoareTripleChecker+Valid, 3983 SdHoareTripleChecker+Invalid, 10733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1940 IncrementalHoareTripleChecker+Valid, 8793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:51:42,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2893 Valid, 3983 Invalid, 10733 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1940 Valid, 8793 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2022-12-13 11:51:42,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145447 states. [2022-12-13 11:52:30,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145447 to 84985. [2022-12-13 11:52:30,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84985 states, 61922 states have (on average 1.577210038435451) internal successors, (97664), 66619 states have internal predecessors, (97664), 18769 states have call successors, (18769), 3078 states have call predecessors, (18769), 4293 states have return successors, (45927), 18967 states have call predecessors, (45927), 18703 states have call successors, (45927) [2022-12-13 11:52:31,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84985 states to 84985 states and 162360 transitions. [2022-12-13 11:52:31,581 INFO L78 Accepts]: Start accepts. Automaton has 84985 states and 162360 transitions. Word has length 131 [2022-12-13 11:52:31,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:52:31,581 INFO L495 AbstractCegarLoop]: Abstraction has 84985 states and 162360 transitions. [2022-12-13 11:52:31,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-13 11:52:31,581 INFO L276 IsEmpty]: Start isEmpty. Operand 84985 states and 162360 transitions. [2022-12-13 11:52:31,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-13 11:52:31,586 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:52:31,586 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:52:31,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 11:52:31,586 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:52:31,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:52:31,586 INFO L85 PathProgramCache]: Analyzing trace with hash 890020929, now seen corresponding path program 1 times [2022-12-13 11:52:31,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:52:31,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055386820] [2022-12-13 11:52:31,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:52:31,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:52:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:52:31,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:52:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:52:31,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:52:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:52:31,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:52:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:52:31,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:52:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:52:31,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:52:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:52:31,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:52:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:52:31,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:52:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:52:31,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:52:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:52:31,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 11:52:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:52:31,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 11:52:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:52:31,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 11:52:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:52:31,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 11:52:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:52:31,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:52:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:52:31,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 11:52:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:52:31,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 11:52:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:52:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 11:52:31,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:52:31,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055386820] [2022-12-13 11:52:31,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055386820] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:52:31,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:52:31,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:52:31,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606725892] [2022-12-13 11:52:31,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:52:31,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:52:31,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:52:31,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:52:31,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:52:31,809 INFO L87 Difference]: Start difference. First operand 84985 states and 162360 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 11:53:47,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:53:47,486 INFO L93 Difference]: Finished difference Result 192800 states and 418381 transitions. [2022-12-13 11:53:47,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:53:47,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2022-12-13 11:53:47,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:53:48,459 INFO L225 Difference]: With dead ends: 192800 [2022-12-13 11:53:48,459 INFO L226 Difference]: Without dead ends: 107833 [2022-12-13 11:53:49,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-12-13 11:53:49,451 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 1917 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 2694 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2021 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 3374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 2694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:53:49,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2021 Valid, 1620 Invalid, 3374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [680 Valid, 2694 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-13 11:53:49,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107833 states. [2022-12-13 11:54:35,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107833 to 85369. [2022-12-13 11:54:35,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85369 states, 62274 states have (on average 1.5744612518868228) internal successors, (98048), 66971 states have internal predecessors, (98048), 18769 states have call successors, (18769), 3142 states have call predecessors, (18769), 4325 states have return successors, (45863), 18935 states have call predecessors, (45863), 18703 states have call successors, (45863) [2022-12-13 11:54:36,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85369 states to 85369 states and 162680 transitions. [2022-12-13 11:54:36,306 INFO L78 Accepts]: Start accepts. Automaton has 85369 states and 162680 transitions. Word has length 132 [2022-12-13 11:54:36,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:54:36,306 INFO L495 AbstractCegarLoop]: Abstraction has 85369 states and 162680 transitions. [2022-12-13 11:54:36,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 11:54:36,306 INFO L276 IsEmpty]: Start isEmpty. Operand 85369 states and 162680 transitions. [2022-12-13 11:54:36,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-13 11:54:36,313 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:54:36,313 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:54:36,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 11:54:36,314 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:54:36,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:36,314 INFO L85 PathProgramCache]: Analyzing trace with hash -359524249, now seen corresponding path program 1 times [2022-12-13 11:54:36,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:54:36,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041024969] [2022-12-13 11:54:36,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:36,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:54:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:36,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:54:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:36,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:54:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:36,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:54:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:36,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 11:54:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:36,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 11:54:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:36,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:54:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:36,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:54:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:36,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:54:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:36,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 11:54:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:36,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 11:54:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:36,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 11:54:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:36,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:54:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:36,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 11:54:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:36,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:54:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:36,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 11:54:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:36,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 11:54:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-13 11:54:36,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:54:36,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041024969] [2022-12-13 11:54:36,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041024969] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:36,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:54:36,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 11:54:36,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56691716] [2022-12-13 11:54:36,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:36,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:54:36,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:54:36,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:54:36,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:54:36,665 INFO L87 Difference]: Start difference. First operand 85369 states and 162680 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 5 states have internal predecessors, (93), 4 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-13 11:55:56,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:55:56,848 INFO L93 Difference]: Finished difference Result 195556 states and 398697 transitions. [2022-12-13 11:55:56,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 11:55:56,849 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 5 states have internal predecessors, (93), 4 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 143 [2022-12-13 11:55:56,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:55:57,829 INFO L225 Difference]: With dead ends: 195556 [2022-12-13 11:55:57,829 INFO L226 Difference]: Without dead ends: 110157 [2022-12-13 11:55:58,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2022-12-13 11:55:58,592 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 2390 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 4563 mSolverCounterSat, 1155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2494 SdHoareTripleChecker+Valid, 2489 SdHoareTripleChecker+Invalid, 5718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1155 IncrementalHoareTripleChecker+Valid, 4563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:55:58,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2494 Valid, 2489 Invalid, 5718 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1155 Valid, 4563 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-12-13 11:55:58,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110157 states.