./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem15_label03.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_5e0ebacc-4e5d-4108-8d9e-5fecdbe6bac1/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0ebacc-4e5d-4108-8d9e-5fecdbe6bac1/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_5e0ebacc-4e5d-4108-8d9e-5fecdbe6bac1/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0ebacc-4e5d-4108-8d9e-5fecdbe6bac1/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem15_label03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0ebacc-4e5d-4108-8d9e-5fecdbe6bac1/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_5e0ebacc-4e5d-4108-8d9e-5fecdbe6bac1/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 f98e4f4a763d24bf8ac0e3bba633d7b3746bb8ffa3965bd124d2a627886885a7 --- 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 10:50:26,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:50:26,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:50:26,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:50:26,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:50:26,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:50:26,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:50:26,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:50:26,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:50:26,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:50:26,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:50:26,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:50:26,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:50:26,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:50:26,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:50:26,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:50:26,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:50:26,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:50:26,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:50:26,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:50:26,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:50:26,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:50:26,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:50:26,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:50:26,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:50:26,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:50:26,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:50:26,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:50:26,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:50:26,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:50:26,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:50:26,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:50:26,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:50:26,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:50:26,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:50:26,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:50:26,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:50:26,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:50:26,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:50:26,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:50:26,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:50:26,774 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0ebacc-4e5d-4108-8d9e-5fecdbe6bac1/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:50:26,820 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:50:26,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:50:26,821 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:50:26,821 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:50:26,821 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:50:26,822 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:50:26,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:50:26,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:50:26,823 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:50:26,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:50:26,823 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:50:26,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:50:26,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:50:26,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:50:26,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:50:26,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:50:26,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:50:26,824 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:50:26,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:50:26,825 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:50:26,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:50:26,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:50:26,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:50:26,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:50:26,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:50:26,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:50:26,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:50:26,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:50:26,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:50:26,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:50:26,837 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:50:26,837 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:50:26,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:50:26,838 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_5e0ebacc-4e5d-4108-8d9e-5fecdbe6bac1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0ebacc-4e5d-4108-8d9e-5fecdbe6bac1/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f98e4f4a763d24bf8ac0e3bba633d7b3746bb8ffa3965bd124d2a627886885a7 [2022-10-17 10:50:27,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:50:27,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:50:27,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:50:27,110 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:50:27,111 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:50:27,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0ebacc-4e5d-4108-8d9e-5fecdbe6bac1/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/eca-rers2012/Problem15_label03.c [2022-10-17 10:50:27,196 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0ebacc-4e5d-4108-8d9e-5fecdbe6bac1/bin/uautomizer-J5u9QxTXDZ/data/88259dde2/d6001899db5a48f89a7cef004d722eaf/FLAG0f179efc8 [2022-10-17 10:50:27,876 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:50:27,877 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0ebacc-4e5d-4108-8d9e-5fecdbe6bac1/sv-benchmarks/c/eca-rers2012/Problem15_label03.c [2022-10-17 10:50:27,898 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0ebacc-4e5d-4108-8d9e-5fecdbe6bac1/bin/uautomizer-J5u9QxTXDZ/data/88259dde2/d6001899db5a48f89a7cef004d722eaf/FLAG0f179efc8 [2022-10-17 10:50:28,005 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0ebacc-4e5d-4108-8d9e-5fecdbe6bac1/bin/uautomizer-J5u9QxTXDZ/data/88259dde2/d6001899db5a48f89a7cef004d722eaf [2022-10-17 10:50:28,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:50:28,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:50:28,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:50:28,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:50:28,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:50:28,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:50:28" (1/1) ... [2022-10-17 10:50:28,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ad5e3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:28, skipping insertion in model container [2022-10-17 10:50:28,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:50:28" (1/1) ... [2022-10-17 10:50:28,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:50:28,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:50:28,378 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_5e0ebacc-4e5d-4108-8d9e-5fecdbe6bac1/sv-benchmarks/c/eca-rers2012/Problem15_label03.c[2937,2950] [2022-10-17 10:50:29,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:50:29,061 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:50:29,093 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_5e0ebacc-4e5d-4108-8d9e-5fecdbe6bac1/sv-benchmarks/c/eca-rers2012/Problem15_label03.c[2937,2950] [2022-10-17 10:50:29,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:50:29,393 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:50:29,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:29 WrapperNode [2022-10-17 10:50:29,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:50:29,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:50:29,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:50:29,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:50:29,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:29" (1/1) ... [2022-10-17 10:50:29,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:29" (1/1) ... [2022-10-17 10:50:29,654 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1758 [2022-10-17 10:50:29,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:50:29,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:50:29,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:50:29,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:50:29,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:29" (1/1) ... [2022-10-17 10:50:29,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:29" (1/1) ... [2022-10-17 10:50:29,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:29" (1/1) ... [2022-10-17 10:50:29,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:29" (1/1) ... [2022-10-17 10:50:29,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:29" (1/1) ... [2022-10-17 10:50:29,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:29" (1/1) ... [2022-10-17 10:50:29,908 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:29" (1/1) ... [2022-10-17 10:50:29,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:29" (1/1) ... [2022-10-17 10:50:29,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:50:29,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:50:29,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:50:29,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:50:29,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:29" (1/1) ... [2022-10-17 10:50:29,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:50:29,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0ebacc-4e5d-4108-8d9e-5fecdbe6bac1/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:50:29,994 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0ebacc-4e5d-4108-8d9e-5fecdbe6bac1/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:50:30,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0ebacc-4e5d-4108-8d9e-5fecdbe6bac1/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:50:30,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:50:30,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:50:30,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:50:30,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:50:30,118 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:50:30,120 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:50:33,323 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:50:33,338 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:50:33,338 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:50:33,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:50:33 BoogieIcfgContainer [2022-10-17 10:50:33,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:50:33,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:50:33,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:50:33,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:50:33,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:50:28" (1/3) ... [2022-10-17 10:50:33,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496d5997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:50:33, skipping insertion in model container [2022-10-17 10:50:33,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:50:29" (2/3) ... [2022-10-17 10:50:33,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496d5997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:50:33, skipping insertion in model container [2022-10-17 10:50:33,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:50:33" (3/3) ... [2022-10-17 10:50:33,351 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label03.c [2022-10-17 10:50:33,371 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:50:33,371 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:50:33,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:50:33,445 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;@1101f1d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:50:33,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:50:33,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 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 10:50:33,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-17 10:50:33,460 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:33,461 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] [2022-10-17 10:50:33,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:33,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:33,467 INFO L85 PathProgramCache]: Analyzing trace with hash -573341295, now seen corresponding path program 1 times [2022-10-17 10:50:33,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:33,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607923555] [2022-10-17 10:50:33,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:33,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:33,767 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 10:50:33,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:33,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607923555] [2022-10-17 10:50:33,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607923555] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:33,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:33,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:50:33,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58817343] [2022-10-17 10:50:33,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:33,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:33,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:33,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:33,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:33,808 INFO L87 Difference]: Start difference. First operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 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 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 10:50:36,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:36,102 INFO L93 Difference]: Finished difference Result 1155 states and 2106 transitions. [2022-10-17 10:50:36,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:36,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2022-10-17 10:50:36,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:36,151 INFO L225 Difference]: With dead ends: 1155 [2022-10-17 10:50:36,151 INFO L226 Difference]: Without dead ends: 667 [2022-10-17 10:50:36,157 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 10:50:36,160 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 321 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:36,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 371 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-10-17 10:50:36,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-10-17 10:50:36,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 665. [2022-10-17 10:50:36,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 664 states have (on average 1.4789156626506024) internal successors, (982), 664 states have internal predecessors, (982), 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 10:50:36,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 982 transitions. [2022-10-17 10:50:36,247 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 982 transitions. Word has length 23 [2022-10-17 10:50:36,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:36,247 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 982 transitions. [2022-10-17 10:50:36,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 10:50:36,248 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 982 transitions. [2022-10-17 10:50:36,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-10-17 10:50:36,255 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:36,255 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:36,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:50:36,256 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:36,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:36,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1774330903, now seen corresponding path program 1 times [2022-10-17 10:50:36,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:36,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648255780] [2022-10-17 10:50:36,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:36,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:36,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:36,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648255780] [2022-10-17 10:50:36,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648255780] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:36,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:36,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:50:36,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794508153] [2022-10-17 10:50:36,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:36,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:36,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:36,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:36,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:36,567 INFO L87 Difference]: Start difference. First operand 665 states and 982 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:39,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:39,183 INFO L93 Difference]: Finished difference Result 1953 states and 2893 transitions. [2022-10-17 10:50:39,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:39,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-10-17 10:50:39,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:39,194 INFO L225 Difference]: With dead ends: 1953 [2022-10-17 10:50:39,194 INFO L226 Difference]: Without dead ends: 1290 [2022-10-17 10:50:39,197 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 10:50:39,198 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 257 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:39,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 325 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-10-17 10:50:39,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-10-17 10:50:39,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1282. [2022-10-17 10:50:39,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1281 states have (on average 1.3989071038251366) internal successors, (1792), 1281 states have internal predecessors, (1792), 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 10:50:39,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1792 transitions. [2022-10-17 10:50:39,246 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1792 transitions. Word has length 98 [2022-10-17 10:50:39,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:39,247 INFO L495 AbstractCegarLoop]: Abstraction has 1282 states and 1792 transitions. [2022-10-17 10:50:39,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:39,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1792 transitions. [2022-10-17 10:50:39,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-10-17 10:50:39,252 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:39,252 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:39,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:50:39,252 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:39,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:39,253 INFO L85 PathProgramCache]: Analyzing trace with hash -136287199, now seen corresponding path program 1 times [2022-10-17 10:50:39,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:39,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957325160] [2022-10-17 10:50:39,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:39,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:39,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:39,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957325160] [2022-10-17 10:50:39,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957325160] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:39,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:39,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:50:39,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485931355] [2022-10-17 10:50:39,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:39,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:39,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:39,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:39,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:39,463 INFO L87 Difference]: Start difference. First operand 1282 states and 1792 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:41,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:41,751 INFO L93 Difference]: Finished difference Result 3764 states and 5263 transitions. [2022-10-17 10:50:41,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:41,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2022-10-17 10:50:41,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:41,766 INFO L225 Difference]: With dead ends: 3764 [2022-10-17 10:50:41,766 INFO L226 Difference]: Without dead ends: 2484 [2022-10-17 10:50:41,768 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 10:50:41,770 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 236 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:41,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 366 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-10-17 10:50:41,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2022-10-17 10:50:41,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2182. [2022-10-17 10:50:41,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2182 states, 2181 states have (on average 1.2815222375057314) internal successors, (2795), 2181 states have internal predecessors, (2795), 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 10:50:41,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 2795 transitions. [2022-10-17 10:50:41,835 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 2795 transitions. Word has length 102 [2022-10-17 10:50:41,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:41,836 INFO L495 AbstractCegarLoop]: Abstraction has 2182 states and 2795 transitions. [2022-10-17 10:50:41,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:50:41,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 2795 transitions. [2022-10-17 10:50:41,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-10-17 10:50:41,841 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:41,842 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:41,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:50:41,842 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:41,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:41,843 INFO L85 PathProgramCache]: Analyzing trace with hash 893597036, now seen corresponding path program 1 times [2022-10-17 10:50:41,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:41,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875983596] [2022-10-17 10:50:41,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:41,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:42,197 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-10-17 10:50:42,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:42,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875983596] [2022-10-17 10:50:42,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875983596] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:42,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:42,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:50:42,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207946724] [2022-10-17 10:50:42,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:42,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:42,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:42,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:42,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:42,216 INFO L87 Difference]: Start difference. First operand 2182 states and 2795 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 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 10:50:43,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:43,972 INFO L93 Difference]: Finished difference Result 6166 states and 7961 transitions. [2022-10-17 10:50:43,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:43,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 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 193 [2022-10-17 10:50:43,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:43,994 INFO L225 Difference]: With dead ends: 6166 [2022-10-17 10:50:43,994 INFO L226 Difference]: Without dead ends: 3986 [2022-10-17 10:50:43,997 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 10:50:43,999 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 257 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:43,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 339 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-17 10:50:44,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2022-10-17 10:50:44,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 3682. [2022-10-17 10:50:44,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3682 states, 3681 states have (on average 1.2200488997555012) internal successors, (4491), 3681 states have internal predecessors, (4491), 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 10:50:44,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 4491 transitions. [2022-10-17 10:50:44,091 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 4491 transitions. Word has length 193 [2022-10-17 10:50:44,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:44,092 INFO L495 AbstractCegarLoop]: Abstraction has 3682 states and 4491 transitions. [2022-10-17 10:50:44,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 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 10:50:44,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 4491 transitions. [2022-10-17 10:50:44,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-10-17 10:50:44,098 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:44,098 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:50:44,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:50:44,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:44,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:44,099 INFO L85 PathProgramCache]: Analyzing trace with hash 2042579332, now seen corresponding path program 1 times [2022-10-17 10:50:44,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:44,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007555832] [2022-10-17 10:50:44,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:44,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:44,976 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-17 10:50:44,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:44,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007555832] [2022-10-17 10:50:44,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007555832] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:44,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:44,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:50:44,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800517682] [2022-10-17 10:50:44,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:44,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:44,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:44,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:44,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:44,983 INFO L87 Difference]: Start difference. First operand 3682 states and 4491 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 2 states have internal predecessors, (275), 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 10:50:46,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:46,589 INFO L93 Difference]: Finished difference Result 7661 states and 9291 transitions. [2022-10-17 10:50:46,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:46,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 2 states have internal predecessors, (275), 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 295 [2022-10-17 10:50:46,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:46,611 INFO L225 Difference]: With dead ends: 7661 [2022-10-17 10:50:46,611 INFO L226 Difference]: Without dead ends: 3981 [2022-10-17 10:50:46,616 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 10:50:46,617 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:46,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 359 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-17 10:50:46,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3981 states. [2022-10-17 10:50:46,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3981 to 3981. [2022-10-17 10:50:46,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3981 states, 3980 states have (on average 1.2050251256281408) internal successors, (4796), 3980 states have internal predecessors, (4796), 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 10:50:46,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3981 states to 3981 states and 4796 transitions. [2022-10-17 10:50:46,751 INFO L78 Accepts]: Start accepts. Automaton has 3981 states and 4796 transitions. Word has length 295 [2022-10-17 10:50:46,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:46,752 INFO L495 AbstractCegarLoop]: Abstraction has 3981 states and 4796 transitions. [2022-10-17 10:50:46,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 2 states have internal predecessors, (275), 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 10:50:46,756 INFO L276 IsEmpty]: Start isEmpty. Operand 3981 states and 4796 transitions. [2022-10-17 10:50:46,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-10-17 10:50:46,762 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:46,762 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:50:46,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:50:46,765 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:46,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:46,766 INFO L85 PathProgramCache]: Analyzing trace with hash 673233013, now seen corresponding path program 1 times [2022-10-17 10:50:46,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:46,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696535147] [2022-10-17 10:50:46,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:46,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-10-17 10:50:47,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:47,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696535147] [2022-10-17 10:50:47,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696535147] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:47,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:47,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:50:47,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532804955] [2022-10-17 10:50:47,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:47,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:47,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:47,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:47,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:47,155 INFO L87 Difference]: Start difference. First operand 3981 states and 4796 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 10:50:49,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:49,335 INFO L93 Difference]: Finished difference Result 9465 states and 11674 transitions. [2022-10-17 10:50:49,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:49,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 310 [2022-10-17 10:50:49,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:49,371 INFO L225 Difference]: With dead ends: 9465 [2022-10-17 10:50:49,371 INFO L226 Difference]: Without dead ends: 5785 [2022-10-17 10:50:49,377 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 10:50:49,378 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 293 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:49,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 671 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-17 10:50:49,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5785 states. [2022-10-17 10:50:49,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5785 to 5783. [2022-10-17 10:50:49,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5783 states, 5782 states have (on average 1.1675890695261155) internal successors, (6751), 5782 states have internal predecessors, (6751), 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 10:50:49,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5783 states to 5783 states and 6751 transitions. [2022-10-17 10:50:49,525 INFO L78 Accepts]: Start accepts. Automaton has 5783 states and 6751 transitions. Word has length 310 [2022-10-17 10:50:49,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:49,526 INFO L495 AbstractCegarLoop]: Abstraction has 5783 states and 6751 transitions. [2022-10-17 10:50:49,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 10:50:49,527 INFO L276 IsEmpty]: Start isEmpty. Operand 5783 states and 6751 transitions. [2022-10-17 10:50:49,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2022-10-17 10:50:49,534 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:49,535 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:50:49,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:50:49,535 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:49,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:49,536 INFO L85 PathProgramCache]: Analyzing trace with hash -2074873550, now seen corresponding path program 1 times [2022-10-17 10:50:49,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:49,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987280326] [2022-10-17 10:50:49,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:49,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:50,008 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-10-17 10:50:50,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:50,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987280326] [2022-10-17 10:50:50,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987280326] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:50,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:50,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:50:50,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808887459] [2022-10-17 10:50:50,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:50,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:50,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:50,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:50,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:50,011 INFO L87 Difference]: Start difference. First operand 5783 states and 6751 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 10:50:52,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:52,381 INFO L93 Difference]: Finished difference Result 13364 states and 15910 transitions. [2022-10-17 10:50:52,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:52,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 369 [2022-10-17 10:50:52,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:52,414 INFO L225 Difference]: With dead ends: 13364 [2022-10-17 10:50:52,415 INFO L226 Difference]: Without dead ends: 7882 [2022-10-17 10:50:52,420 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 10:50:52,421 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 304 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:52,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 635 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-10-17 10:50:52,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7882 states. [2022-10-17 10:50:52,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7882 to 7284. [2022-10-17 10:50:52,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7284 states, 7283 states have (on average 1.148702457778388) internal successors, (8366), 7283 states have internal predecessors, (8366), 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 10:50:52,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7284 states to 7284 states and 8366 transitions. [2022-10-17 10:50:52,576 INFO L78 Accepts]: Start accepts. Automaton has 7284 states and 8366 transitions. Word has length 369 [2022-10-17 10:50:52,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:52,577 INFO L495 AbstractCegarLoop]: Abstraction has 7284 states and 8366 transitions. [2022-10-17 10:50:52,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 10:50:52,578 INFO L276 IsEmpty]: Start isEmpty. Operand 7284 states and 8366 transitions. [2022-10-17 10:50:52,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2022-10-17 10:50:52,586 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:52,586 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:50:52,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:50:52,587 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:52,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:52,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1942518045, now seen corresponding path program 1 times [2022-10-17 10:50:52,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:52,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118032180] [2022-10-17 10:50:52,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:52,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:53,053 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-10-17 10:50:53,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:53,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118032180] [2022-10-17 10:50:53,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118032180] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:53,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:53,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:50:53,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026928400] [2022-10-17 10:50:53,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:53,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:53,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:53,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:53,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:53,057 INFO L87 Difference]: Start difference. First operand 7284 states and 8366 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 10:50:55,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:50:55,404 INFO L93 Difference]: Finished difference Result 16958 states and 19732 transitions. [2022-10-17 10:50:55,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:50:55,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 384 [2022-10-17 10:50:55,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:50:55,441 INFO L225 Difference]: With dead ends: 16958 [2022-10-17 10:50:55,441 INFO L226 Difference]: Without dead ends: 9975 [2022-10-17 10:50:55,450 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 10:50:55,451 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 291 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:50:55,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 320 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-10-17 10:50:55,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9975 states. [2022-10-17 10:50:55,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9975 to 6680. [2022-10-17 10:50:55,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6680 states, 6679 states have (on average 1.1573588860607875) internal successors, (7730), 6679 states have internal predecessors, (7730), 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 10:50:55,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6680 states to 6680 states and 7730 transitions. [2022-10-17 10:50:55,599 INFO L78 Accepts]: Start accepts. Automaton has 6680 states and 7730 transitions. Word has length 384 [2022-10-17 10:50:55,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:50:55,600 INFO L495 AbstractCegarLoop]: Abstraction has 6680 states and 7730 transitions. [2022-10-17 10:50:55,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 10:50:55,601 INFO L276 IsEmpty]: Start isEmpty. Operand 6680 states and 7730 transitions. [2022-10-17 10:50:55,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-10-17 10:50:55,609 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:50:55,610 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:50:55,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:50:55,610 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:50:55,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:50:55,611 INFO L85 PathProgramCache]: Analyzing trace with hash 206101355, now seen corresponding path program 1 times [2022-10-17 10:50:55,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:50:55,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824593195] [2022-10-17 10:50:55,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:50:55,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:50:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:50:56,045 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:50:56,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:50:56,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824593195] [2022-10-17 10:50:56,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824593195] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:50:56,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:50:56,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:50:56,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458581253] [2022-10-17 10:50:56,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:50:56,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:50:56,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:50:56,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:50:56,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:50:56,050 INFO L87 Difference]: Start difference. First operand 6680 states and 7730 transitions. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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)