./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073d4e73-94d3-49a7-b81c-15df3e2a5fbc/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073d4e73-94d3-49a7-b81c-15df3e2a5fbc/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073d4e73-94d3-49a7-b81c-15df3e2a5fbc/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073d4e73-94d3-49a7-b81c-15df3e2a5fbc/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073d4e73-94d3-49a7-b81c-15df3e2a5fbc/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073d4e73-94d3-49a7-b81c-15df3e2a5fbc/bin/uautomizer-J5u9QxTXDZ --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 cfa1fee5fdadabd96a5731bb0a647950318689cce856270fe55e6bf96a429cbb --- 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-dbf71c6-m [2022-10-17 10:50:17,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:50:17,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:50:17,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:50:17,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:50:17,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:50:17,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:50:17,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:50:17,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:50:17,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:50:17,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:50:17,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:50:17,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:50:17,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:50:17,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:50:17,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:50:17,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:50:17,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:50:17,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:50:17,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:50:17,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:50:17,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:50:17,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:50:17,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:50:17,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:50:17,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:50:17,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:50:17,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:50:17,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:50:17,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:50:17,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:50:17,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:50:17,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:50:17,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:50:17,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:50:17,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:50:17,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:50:17,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:50:17,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:50:17,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:50:17,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:50:17,702 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073d4e73-94d3-49a7-b81c-15df3e2a5fbc/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:50:17,746 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:50:17,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:50:17,747 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:50:17,747 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:50:17,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:50:17,748 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:50:17,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:50:17,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:50:17,749 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:50:17,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:50:17,749 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:50:17,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:50:17,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:50:17,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:50:17,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:50:17,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:50:17,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:50:17,751 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:50:17,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:50:17,751 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:50:17,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:50:17,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:50:17,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:50:17,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:50:17,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:50:17,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:50:17,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:50:17,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:50:17,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:50:17,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:50:17,754 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:50:17,754 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:50:17,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:50:17,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073d4e73-94d3-49a7-b81c-15df3e2a5fbc/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073d4e73-94d3-49a7-b81c-15df3e2a5fbc/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfa1fee5fdadabd96a5731bb0a647950318689cce856270fe55e6bf96a429cbb [2022-10-17 10:50:18,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:50:18,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:50:18,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:50:18,117 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:50:18,119 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:50:18,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073d4e73-94d3-49a7-b81c-15df3e2a5fbc/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c [2022-10-17 10:50:18,188 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073d4e73-94d3-49a7-b81c-15df3e2a5fbc/bin/uautomizer-J5u9QxTXDZ/data/ca03a170b/a436cf3078a34132b0a44d6bd35ad1fc/FLAGdb08e873c [2022-10-17 10:50:19,024 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:50:19,025 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073d4e73-94d3-49a7-b81c-15df3e2a5fbc/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c [2022-10-17 10:50:19,068 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073d4e73-94d3-49a7-b81c-15df3e2a5fbc/bin/uautomizer-J5u9QxTXDZ/data/ca03a170b/a436cf3078a34132b0a44d6bd35ad1fc/FLAGdb08e873c [2022-10-17 10:50:19,568 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073d4e73-94d3-49a7-b81c-15df3e2a5fbc/bin/uautomizer-J5u9QxTXDZ/data/ca03a170b/a436cf3078a34132b0a44d6bd35ad1fc [2022-10-17 10:50:19,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:50:19,572 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:50:19,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:50:19,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:50:19,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:50:19,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:50:19" (1/1) ... [2022-10-17 10:50:19,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e839389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:19, skipping insertion in model container [2022-10-17 10:50:19,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:50:19" (1/1) ... [2022-10-17 10:50:19,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:50:19,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:50:20,226 WARN L230 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_073d4e73-94d3-49a7-b81c-15df3e2a5fbc/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c[20454,20467] [2022-10-17 10:50:20,261 WARN L230 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_073d4e73-94d3-49a7-b81c-15df3e2a5fbc/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c[23271,23284] [2022-10-17 10:50:21,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:50:21,195 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:50:21,262 WARN L230 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_073d4e73-94d3-49a7-b81c-15df3e2a5fbc/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c[20454,20467] [2022-10-17 10:50:21,272 WARN L230 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_073d4e73-94d3-49a7-b81c-15df3e2a5fbc/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c[23271,23284] [2022-10-17 10:50:21,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:50:21,919 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:50:21,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:21 WrapperNode [2022-10-17 10:50:21,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:50:21,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:50:21,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:50:21,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:50:21,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:21" (1/1) ... [2022-10-17 10:50:21,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:21" (1/1) ... [2022-10-17 10:50:22,386 INFO L138 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5208 [2022-10-17 10:50:22,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:50:22,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:50:22,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:50:22,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:50:22,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:21" (1/1) ... [2022-10-17 10:50:22,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:21" (1/1) ... [2022-10-17 10:50:22,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:21" (1/1) ... [2022-10-17 10:50:22,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:21" (1/1) ... [2022-10-17 10:50:22,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:21" (1/1) ... [2022-10-17 10:50:22,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:21" (1/1) ... [2022-10-17 10:50:22,889 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:21" (1/1) ... [2022-10-17 10:50:22,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:21" (1/1) ... [2022-10-17 10:50:22,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:50:23,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:50:23,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:50:23,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:50:23,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:21" (1/1) ... [2022-10-17 10:50:23,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:50:23,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073d4e73-94d3-49a7-b81c-15df3e2a5fbc/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:50:23,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073d4e73-94d3-49a7-b81c-15df3e2a5fbc/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:50:23,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_073d4e73-94d3-49a7-b81c-15df3e2a5fbc/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:50:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:50:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:50:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:50:23,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:50:23,318 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:50:23,320 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:50:28,279 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:50:28,311 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:50:28,312 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 10:50:28,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:50:28 BoogieIcfgContainer [2022-10-17 10:50:28,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:50:28,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:50:28,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:50:28,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:50:28,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:50:19" (1/3) ... [2022-10-17 10:50:28,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b02e8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:50:28, skipping insertion in model container [2022-10-17 10:50:28,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:21" (2/3) ... [2022-10-17 10:50:28,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b02e8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:50:28, skipping insertion in model container [2022-10-17 10:50:28,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:50:28" (3/3) ... [2022-10-17 10:50:28,326 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c [2022-10-17 10:50:28,345 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:50:28,346 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:50:28,453 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:50:28,472 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;@489c09d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:50:28,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-17 10:50:28,484 INFO L276 IsEmpty]: Start isEmpty. Operand has 946 states, 943 states have (on average 1.8971367974549311) internal successors, (1789), 945 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:28,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-17 10:50:28,499 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:28,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:28,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:28,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:28,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1985263371, now seen corresponding path program 1 times [2022-10-17 10:50:28,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:28,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028355531] [2022-10-17 10:50:28,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:28,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:28,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:28,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:28,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028355531] [2022-10-17 10:50:28,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028355531] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:28,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:28,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:50:28,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465032930] [2022-10-17 10:50:28,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:28,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:28,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:28,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:28,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:28,964 INFO L87 Difference]: Start difference. First operand has 946 states, 943 states have (on average 1.8971367974549311) internal successors, (1789), 945 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:33,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:33,865 INFO L93 Difference]: Finished difference Result 2605 states and 4986 transitions. [2022-10-17 10:50:33,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:33,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-10-17 10:50:33,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:33,900 INFO L225 Difference]: With dead ends: 2605 [2022-10-17 10:50:33,900 INFO L226 Difference]: Without dead ends: 1631 [2022-10-17 10:50:33,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:33,911 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 1014 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:33,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 744 Invalid, 3033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-10-17 10:50:33,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2022-10-17 10:50:34,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2022-10-17 10:50:34,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 1.6175567833026396) internal successors, (2635), 1630 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:34,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2635 transitions. [2022-10-17 10:50:34,061 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2635 transitions. Word has length 24 [2022-10-17 10:50:34,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:34,062 INFO L495 AbstractCegarLoop]: Abstraction has 1631 states and 2635 transitions. [2022-10-17 10:50:34,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:34,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2635 transitions. [2022-10-17 10:50:34,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-17 10:50:34,070 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:34,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:34,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:50:34,071 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:34,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:34,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1343709944, now seen corresponding path program 1 times [2022-10-17 10:50:34,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:34,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203735895] [2022-10-17 10:50:34,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:34,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:34,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:34,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:34,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203735895] [2022-10-17 10:50:34,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203735895] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:34,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:34,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:50:34,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934495366] [2022-10-17 10:50:34,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:34,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:50:34,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:34,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:50:34,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:50:34,325 INFO L87 Difference]: Start difference. First operand 1631 states and 2635 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:34,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:34,431 INFO L93 Difference]: Finished difference Result 1705 states and 2750 transitions. [2022-10-17 10:50:34,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:50:34,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-10-17 10:50:34,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:34,442 INFO L225 Difference]: With dead ends: 1705 [2022-10-17 10:50:34,442 INFO L226 Difference]: Without dead ends: 1631 [2022-10-17 10:50:34,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:50:34,445 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 3 mSDsluCounter, 4909 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6563 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:34,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6563 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:50:34,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2022-10-17 10:50:34,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2022-10-17 10:50:34,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 1.5868631062001228) internal successors, (2585), 1630 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:34,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2585 transitions. [2022-10-17 10:50:34,556 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2585 transitions. Word has length 42 [2022-10-17 10:50:34,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:34,557 INFO L495 AbstractCegarLoop]: Abstraction has 1631 states and 2585 transitions. [2022-10-17 10:50:34,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:34,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2585 transitions. [2022-10-17 10:50:34,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-10-17 10:50:34,563 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:34,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:34,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:50:34,564 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:34,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:34,565 INFO L85 PathProgramCache]: Analyzing trace with hash -461668761, now seen corresponding path program 1 times [2022-10-17 10:50:34,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:34,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871002172] [2022-10-17 10:50:34,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:34,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:34,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:34,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:34,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871002172] [2022-10-17 10:50:34,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871002172] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:34,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:34,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:50:34,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964857043] [2022-10-17 10:50:34,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:34,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:34,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:34,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:34,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:34,686 INFO L87 Difference]: Start difference. First operand 1631 states and 2585 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:34,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:34,737 INFO L93 Difference]: Finished difference Result 1765 states and 2797 transitions. [2022-10-17 10:50:34,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:34,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-10-17 10:50:34,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:34,749 INFO L225 Difference]: With dead ends: 1765 [2022-10-17 10:50:34,749 INFO L226 Difference]: Without dead ends: 1695 [2022-10-17 10:50:34,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:34,758 INFO L413 NwaCegarLoop]: 1674 mSDtfsCounter, 1532 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:34,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1532 Valid, 1791 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:50:34,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2022-10-17 10:50:34,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1693. [2022-10-17 10:50:34,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1691 states have (on average 1.5872264931992903) internal successors, (2684), 1692 states have internal predecessors, (2684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:34,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2684 transitions. [2022-10-17 10:50:34,819 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2684 transitions. Word has length 91 [2022-10-17 10:50:34,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:34,820 INFO L495 AbstractCegarLoop]: Abstraction has 1693 states and 2684 transitions. [2022-10-17 10:50:34,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:34,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2684 transitions. [2022-10-17 10:50:34,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-10-17 10:50:34,822 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:34,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:34,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:50:34,822 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:34,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:34,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1207251491, now seen corresponding path program 1 times [2022-10-17 10:50:34,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:34,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049934517] [2022-10-17 10:50:34,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:34,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:34,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:34,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:34,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049934517] [2022-10-17 10:50:34,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049934517] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:34,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:34,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:50:34,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003953761] [2022-10-17 10:50:34,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:34,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:34,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:34,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:34,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:34,983 INFO L87 Difference]: Start difference. First operand 1693 states and 2684 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:35,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:35,039 INFO L93 Difference]: Finished difference Result 1945 states and 3084 transitions. [2022-10-17 10:50:35,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:35,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-10-17 10:50:35,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:35,051 INFO L225 Difference]: With dead ends: 1945 [2022-10-17 10:50:35,052 INFO L226 Difference]: Without dead ends: 1813 [2022-10-17 10:50:35,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:35,054 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 1528 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:35,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 1790 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:50:35,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2022-10-17 10:50:35,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1811. [2022-10-17 10:50:35,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1809 states have (on average 1.5870646766169154) internal successors, (2871), 1810 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:35,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2871 transitions. [2022-10-17 10:50:35,116 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2871 transitions. Word has length 91 [2022-10-17 10:50:35,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:35,117 INFO L495 AbstractCegarLoop]: Abstraction has 1811 states and 2871 transitions. [2022-10-17 10:50:35,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:35,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2871 transitions. [2022-10-17 10:50:35,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-10-17 10:50:35,118 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:35,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:35,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:50:35,119 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:35,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:35,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1147684947, now seen corresponding path program 1 times [2022-10-17 10:50:35,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:35,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939094517] [2022-10-17 10:50:35,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:35,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:35,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:35,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939094517] [2022-10-17 10:50:35,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939094517] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:35,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:35,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:50:35,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390775008] [2022-10-17 10:50:35,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:35,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:35,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:35,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:35,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:35,226 INFO L87 Difference]: Start difference. First operand 1811 states and 2871 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:35,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:35,295 INFO L93 Difference]: Finished difference Result 2287 states and 3625 transitions. [2022-10-17 10:50:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:35,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-10-17 10:50:35,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:35,310 INFO L225 Difference]: With dead ends: 2287 [2022-10-17 10:50:35,310 INFO L226 Difference]: Without dead ends: 2037 [2022-10-17 10:50:35,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:35,312 INFO L413 NwaCegarLoop]: 1664 mSDtfsCounter, 1524 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:35,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1789 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:50:35,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2022-10-17 10:50:35,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 2035. [2022-10-17 10:50:35,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2035 states, 2033 states have (on average 1.5853418593212) internal successors, (3223), 2034 states have internal predecessors, (3223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:35,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 3223 transitions. [2022-10-17 10:50:35,390 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 3223 transitions. Word has length 91 [2022-10-17 10:50:35,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:35,394 INFO L495 AbstractCegarLoop]: Abstraction has 2035 states and 3223 transitions. [2022-10-17 10:50:35,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:35,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 3223 transitions. [2022-10-17 10:50:35,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-10-17 10:50:35,397 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:35,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:35,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:50:35,398 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:35,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:35,406 INFO L85 PathProgramCache]: Analyzing trace with hash -446599735, now seen corresponding path program 1 times [2022-10-17 10:50:35,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:35,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799998125] [2022-10-17 10:50:35,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:35,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:35,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:35,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:35,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799998125] [2022-10-17 10:50:35,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799998125] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:35,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:35,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:50:35,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635997714] [2022-10-17 10:50:35,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:35,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:35,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:35,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:35,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:35,571 INFO L87 Difference]: Start difference. First operand 2035 states and 3223 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:35,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:35,662 INFO L93 Difference]: Finished difference Result 2935 states and 4641 transitions. [2022-10-17 10:50:35,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:35,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-10-17 10:50:35,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:35,679 INFO L225 Difference]: With dead ends: 2935 [2022-10-17 10:50:35,680 INFO L226 Difference]: Without dead ends: 2461 [2022-10-17 10:50:35,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:35,687 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 1520 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:35,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 1788 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:50:35,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2022-10-17 10:50:35,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 2459. [2022-10-17 10:50:35,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2459 states, 2457 states have (on average 1.5803825803825804) internal successors, (3883), 2458 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:35,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 3883 transitions. [2022-10-17 10:50:35,798 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 3883 transitions. Word has length 91 [2022-10-17 10:50:35,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:35,800 INFO L495 AbstractCegarLoop]: Abstraction has 2459 states and 3883 transitions. [2022-10-17 10:50:35,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:35,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 3883 transitions. [2022-10-17 10:50:35,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-10-17 10:50:35,807 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:35,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:35,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:50:35,808 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:35,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:35,808 INFO L85 PathProgramCache]: Analyzing trace with hash -108806593, now seen corresponding path program 1 times [2022-10-17 10:50:35,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:35,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187356928] [2022-10-17 10:50:35,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:35,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:35,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:35,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:35,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187356928] [2022-10-17 10:50:35,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187356928] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:35,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:35,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:50:35,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525000085] [2022-10-17 10:50:35,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:35,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:35,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:35,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:35,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:35,922 INFO L87 Difference]: Start difference. First operand 2459 states and 3883 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:36,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:36,104 INFO L93 Difference]: Finished difference Result 4159 states and 6541 transitions. [2022-10-17 10:50:36,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:36,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-10-17 10:50:36,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:36,125 INFO L225 Difference]: With dead ends: 4159 [2022-10-17 10:50:36,125 INFO L226 Difference]: Without dead ends: 3261 [2022-10-17 10:50:36,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:36,131 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 1516 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:36,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1787 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:50:36,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3261 states. [2022-10-17 10:50:36,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3261 to 3259. [2022-10-17 10:50:36,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3259 states, 3257 states have (on average 1.5704636168252994) internal successors, (5115), 3258 states have internal predecessors, (5115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:36,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3259 states to 3259 states and 5115 transitions. [2022-10-17 10:50:36,328 INFO L78 Accepts]: Start accepts. Automaton has 3259 states and 5115 transitions. Word has length 91 [2022-10-17 10:50:36,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:36,329 INFO L495 AbstractCegarLoop]: Abstraction has 3259 states and 5115 transitions. [2022-10-17 10:50:36,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:36,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3259 states and 5115 transitions. [2022-10-17 10:50:36,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-10-17 10:50:36,331 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:36,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:36,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:50:36,332 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:36,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:36,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1109178805, now seen corresponding path program 1 times [2022-10-17 10:50:36,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:36,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604322850] [2022-10-17 10:50:36,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:36,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:36,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:36,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604322850] [2022-10-17 10:50:36,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604322850] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:36,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:36,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:50:36,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407972082] [2022-10-17 10:50:36,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:36,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:50:36,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:36,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:50:36,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:50:36,634 INFO L87 Difference]: Start difference. First operand 3259 states and 5115 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:38,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:38,709 INFO L93 Difference]: Finished difference Result 27031 states and 42089 transitions. [2022-10-17 10:50:38,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:50:38,709 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-10-17 10:50:38,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:38,835 INFO L225 Difference]: With dead ends: 27031 [2022-10-17 10:50:38,835 INFO L226 Difference]: Without dead ends: 25333 [2022-10-17 10:50:38,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-10-17 10:50:38,847 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 12616 mSDsluCounter, 2508 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12616 SdHoareTripleChecker+Valid, 4108 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:38,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12616 Valid, 4108 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:50:38,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25333 states. [2022-10-17 10:50:39,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25333 to 4955. [2022-10-17 10:50:39,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4955 states, 4953 states have (on average 1.5527962850797496) internal successors, (7691), 4954 states have internal predecessors, (7691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:39,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4955 states to 4955 states and 7691 transitions. [2022-10-17 10:50:39,628 INFO L78 Accepts]: Start accepts. Automaton has 4955 states and 7691 transitions. Word has length 91 [2022-10-17 10:50:39,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:39,629 INFO L495 AbstractCegarLoop]: Abstraction has 4955 states and 7691 transitions. [2022-10-17 10:50:39,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:39,629 INFO L276 IsEmpty]: Start isEmpty. Operand 4955 states and 7691 transitions. [2022-10-17 10:50:39,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-10-17 10:50:39,632 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:39,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:39,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:50:39,633 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:39,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:39,633 INFO L85 PathProgramCache]: Analyzing trace with hash -646747483, now seen corresponding path program 1 times [2022-10-17 10:50:39,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:39,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277306555] [2022-10-17 10:50:39,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:39,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:39,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:39,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:39,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277306555] [2022-10-17 10:50:39,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277306555] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:39,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:39,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:50:39,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236704834] [2022-10-17 10:50:39,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:39,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:39,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:39,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:39,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:39,739 INFO L87 Difference]: Start difference. First operand 4955 states and 7691 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:40,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:40,536 INFO L93 Difference]: Finished difference Result 11391 states and 17517 transitions. [2022-10-17 10:50:40,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:40,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-10-17 10:50:40,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:40,555 INFO L225 Difference]: With dead ends: 11391 [2022-10-17 10:50:40,556 INFO L226 Difference]: Without dead ends: 7997 [2022-10-17 10:50:40,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:40,564 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1507 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:40,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1706 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:50:40,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7997 states. [2022-10-17 10:50:41,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7997 to 7931. [2022-10-17 10:50:41,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7931 states, 7929 states have (on average 1.522890654559213) internal successors, (12075), 7930 states have internal predecessors, (12075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:41,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7931 states to 7931 states and 12075 transitions. [2022-10-17 10:50:41,427 INFO L78 Accepts]: Start accepts. Automaton has 7931 states and 12075 transitions. Word has length 93 [2022-10-17 10:50:41,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:41,427 INFO L495 AbstractCegarLoop]: Abstraction has 7931 states and 12075 transitions. [2022-10-17 10:50:41,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:41,428 INFO L276 IsEmpty]: Start isEmpty. Operand 7931 states and 12075 transitions. [2022-10-17 10:50:41,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-10-17 10:50:41,429 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:41,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:41,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:50:41,430 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:41,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:41,431 INFO L85 PathProgramCache]: Analyzing trace with hash -580253971, now seen corresponding path program 1 times [2022-10-17 10:50:41,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:41,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774145987] [2022-10-17 10:50:41,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:41,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:42,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:42,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:42,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774145987] [2022-10-17 10:50:42,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774145987] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:42,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:42,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:50:42,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529866128] [2022-10-17 10:50:42,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:42,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:50:42,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:42,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:50:42,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:50:42,039 INFO L87 Difference]: Start difference. First operand 7931 states and 12075 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:43,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:43,302 INFO L93 Difference]: Finished difference Result 14303 states and 21677 transitions. [2022-10-17 10:50:43,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:50:43,303 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-10-17 10:50:43,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:43,320 INFO L225 Difference]: With dead ends: 14303 [2022-10-17 10:50:43,321 INFO L226 Difference]: Without dead ends: 7933 [2022-10-17 10:50:43,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:50:43,332 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 10977 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10977 SdHoareTripleChecker+Valid, 2292 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:43,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10977 Valid, 2292 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:50:43,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7933 states. [2022-10-17 10:50:44,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7933 to 7931. [2022-10-17 10:50:44,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7931 states, 7929 states have (on average 1.514819018791777) internal successors, (12011), 7930 states have internal predecessors, (12011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:44,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7931 states to 7931 states and 12011 transitions. [2022-10-17 10:50:44,218 INFO L78 Accepts]: Start accepts. Automaton has 7931 states and 12011 transitions. Word has length 93 [2022-10-17 10:50:44,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:44,219 INFO L495 AbstractCegarLoop]: Abstraction has 7931 states and 12011 transitions. [2022-10-17 10:50:44,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:44,219 INFO L276 IsEmpty]: Start isEmpty. Operand 7931 states and 12011 transitions. [2022-10-17 10:50:44,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-10-17 10:50:44,221 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:44,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:44,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:50:44,222 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:44,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:44,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1326262359, now seen corresponding path program 1 times [2022-10-17 10:50:44,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:44,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617178982] [2022-10-17 10:50:44,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:44,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:44,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:44,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617178982] [2022-10-17 10:50:44,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617178982] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:44,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:44,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:50:44,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715055545] [2022-10-17 10:50:44,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:44,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:44,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:44,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:44,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:44,305 INFO L87 Difference]: Start difference. First operand 7931 states and 12011 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:45,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:45,375 INFO L93 Difference]: Finished difference Result 19903 states and 29805 transitions. [2022-10-17 10:50:45,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:45,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-10-17 10:50:45,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:45,407 INFO L225 Difference]: With dead ends: 19903 [2022-10-17 10:50:45,407 INFO L226 Difference]: Without dead ends: 13533 [2022-10-17 10:50:45,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:45,419 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 1536 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:45,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1801 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:50:45,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13533 states. [2022-10-17 10:50:46,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13533 to 13531. [2022-10-17 10:50:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13531 states, 13529 states have (on average 1.4885800872200459) internal successors, (20139), 13530 states have internal predecessors, (20139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:46,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13531 states to 13531 states and 20139 transitions. [2022-10-17 10:50:46,794 INFO L78 Accepts]: Start accepts. Automaton has 13531 states and 20139 transitions. Word has length 93 [2022-10-17 10:50:46,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:46,794 INFO L495 AbstractCegarLoop]: Abstraction has 13531 states and 20139 transitions. [2022-10-17 10:50:46,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:46,795 INFO L276 IsEmpty]: Start isEmpty. Operand 13531 states and 20139 transitions. [2022-10-17 10:50:46,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-10-17 10:50:46,796 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:46,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:46,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 10:50:46,797 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:46,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:46,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1222726774, now seen corresponding path program 1 times [2022-10-17 10:50:46,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:46,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291319061] [2022-10-17 10:50:46,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:46,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat