./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS --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 5a6204b8fe11d129da43c7784d578168196f39a9dd912e242b1920607a0dfe2c --- 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-4e7fbc6 [2022-11-23 02:13:19,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:13:19,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:13:19,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:13:19,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:13:19,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:13:19,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:13:19,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:13:19,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:13:19,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:13:19,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:13:19,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:13:19,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:13:19,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:13:19,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:13:19,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:13:19,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:13:19,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:13:19,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:13:19,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:13:19,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:13:19,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:13:19,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:13:19,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:13:19,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:13:19,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:13:19,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:13:19,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:13:19,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:13:19,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:13:19,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:13:19,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:13:19,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:13:19,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:13:19,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:13:19,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:13:19,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:13:19,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:13:19,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:13:19,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:13:19,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:13:19,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 02:13:19,842 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:13:19,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:13:19,843 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:13:19,843 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:13:19,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:13:19,844 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:13:19,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:13:19,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:13:19,845 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:13:19,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:13:19,847 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:13:19,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:13:19,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:13:19,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:13:19,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:13:19,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:13:19,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:13:19,848 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:13:19,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:13:19,849 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:13:19,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:13:19,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:13:19,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:13:19,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:13:19,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:13:19,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:13:19,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:13:19,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:13:19,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:13:19,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:13:19,852 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:13:19,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:13:19,853 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:13:19,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:13:19,853 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a6204b8fe11d129da43c7784d578168196f39a9dd912e242b1920607a0dfe2c [2022-11-23 02:13:20,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:13:20,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:13:20,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:13:20,116 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:13:20,116 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:13:20,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-11-23 02:13:23,287 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:13:23,600 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:13:23,600 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-11-23 02:13:23,613 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS/data/08c9aca57/ef092f540b00426e871ed3275279aceb/FLAG038f04e74 [2022-11-23 02:13:23,628 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS/data/08c9aca57/ef092f540b00426e871ed3275279aceb [2022-11-23 02:13:23,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:13:23,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:13:23,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:13:23,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:13:23,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:13:23,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:13:23" (1/1) ... [2022-11-23 02:13:23,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@327a7e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:23, skipping insertion in model container [2022-11-23 02:13:23,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:13:23" (1/1) ... [2022-11-23 02:13:23,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:13:23,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:13:23,966 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4938,4951] [2022-11-23 02:13:23,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:13:24,019 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:13:24,056 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4938,4951] [2022-11-23 02:13:24,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:13:24,104 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:13:24,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:24 WrapperNode [2022-11-23 02:13:24,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:13:24,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:13:24,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:13:24,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:13:24,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:24" (1/1) ... [2022-11-23 02:13:24,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:24" (1/1) ... [2022-11-23 02:13:24,152 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 338 [2022-11-23 02:13:24,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:13:24,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:13:24,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:13:24,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:13:24,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:24" (1/1) ... [2022-11-23 02:13:24,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:24" (1/1) ... [2022-11-23 02:13:24,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:24" (1/1) ... [2022-11-23 02:13:24,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:24" (1/1) ... [2022-11-23 02:13:24,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:24" (1/1) ... [2022-11-23 02:13:24,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:24" (1/1) ... [2022-11-23 02:13:24,179 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:24" (1/1) ... [2022-11-23 02:13:24,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:24" (1/1) ... [2022-11-23 02:13:24,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:13:24,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:13:24,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:13:24,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:13:24,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:24" (1/1) ... [2022-11-23 02:13:24,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:13:24,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:13:24,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:13:24,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:13:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:13:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:13:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:13:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:13:24,383 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:13:24,385 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:13:24,865 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:13:24,878 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:13:24,879 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 02:13:24,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:13:24 BoogieIcfgContainer [2022-11-23 02:13:24,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:13:24,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:13:24,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:13:24,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:13:24,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:13:23" (1/3) ... [2022-11-23 02:13:24,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d295efd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:13:24, skipping insertion in model container [2022-11-23 02:13:24,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:24" (2/3) ... [2022-11-23 02:13:24,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d295efd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:13:24, skipping insertion in model container [2022-11-23 02:13:24,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:13:24" (3/3) ... [2022-11-23 02:13:24,890 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-11-23 02:13:24,920 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:13:24,920 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 02:13:24,981 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:13:24,988 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;@76f3db45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:13:24,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 02:13:24,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 79 states have (on average 1.7088607594936709) internal successors, (135), 80 states have internal predecessors, (135), 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) [2022-11-23 02:13:25,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-23 02:13:25,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:13:25,002 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] [2022-11-23 02:13:25,003 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:13:25,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:25,009 INFO L85 PathProgramCache]: Analyzing trace with hash 377049112, now seen corresponding path program 1 times [2022-11-23 02:13:25,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:25,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579679653] [2022-11-23 02:13:25,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:25,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:25,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:25,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579679653] [2022-11-23 02:13:25,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579679653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:25,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:25,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:13:25,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791255060] [2022-11-23 02:13:25,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:25,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:13:25,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:25,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:13:25,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:13:25,531 INFO L87 Difference]: Start difference. First operand has 81 states, 79 states have (on average 1.7088607594936709) internal successors, (135), 80 states have internal predecessors, (135), 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 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-11-23 02:13:25,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:13:25,623 INFO L93 Difference]: Finished difference Result 183 states and 292 transitions. [2022-11-23 02:13:25,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:13:25,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2022-11-23 02:13:25,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:13:25,639 INFO L225 Difference]: With dead ends: 183 [2022-11-23 02:13:25,639 INFO L226 Difference]: Without dead ends: 122 [2022-11-23 02:13:25,643 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 [2022-11-23 02:13:25,648 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 84 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:13:25,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 273 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:13:25,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-23 02:13:25,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2022-11-23 02:13:25,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.4705882352941178) internal successors, (175), 119 states have internal predecessors, (175), 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) [2022-11-23 02:13:25,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 175 transitions. [2022-11-23 02:13:25,700 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 175 transitions. Word has length 48 [2022-11-23 02:13:25,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:13:25,701 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 175 transitions. [2022-11-23 02:13:25,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-11-23 02:13:25,702 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 175 transitions. [2022-11-23 02:13:25,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-23 02:13:25,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:13:25,703 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] [2022-11-23 02:13:25,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:13:25,704 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:13:25,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:25,705 INFO L85 PathProgramCache]: Analyzing trace with hash 292717965, now seen corresponding path program 1 times [2022-11-23 02:13:25,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:25,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731688960] [2022-11-23 02:13:25,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:25,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:25,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:25,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:25,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731688960] [2022-11-23 02:13:25,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731688960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:25,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:25,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:13:25,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125732893] [2022-11-23 02:13:25,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:25,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:13:25,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:25,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:13:25,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:13:25,873 INFO L87 Difference]: Start difference. First operand 120 states and 175 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2022-11-23 02:13:25,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:13:25,942 INFO L93 Difference]: Finished difference Result 292 states and 447 transitions. [2022-11-23 02:13:25,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:13:25,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2022-11-23 02:13:25,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:13:25,946 INFO L225 Difference]: With dead ends: 292 [2022-11-23 02:13:25,946 INFO L226 Difference]: Without dead ends: 198 [2022-11-23 02:13:25,947 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 [2022-11-23 02:13:25,948 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 62 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 231 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 [2022-11-23 02:13:25,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 231 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:13:25,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-23 02:13:26,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196. [2022-11-23 02:13:26,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.5128205128205128) internal successors, (295), 195 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) [2022-11-23 02:13:26,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 295 transitions. [2022-11-23 02:13:26,026 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 295 transitions. Word has length 49 [2022-11-23 02:13:26,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:13:26,027 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 295 transitions. [2022-11-23 02:13:26,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2022-11-23 02:13:26,028 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 295 transitions. [2022-11-23 02:13:26,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-23 02:13:26,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:13:26,029 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] [2022-11-23 02:13:26,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:13:26,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:13:26,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:26,030 INFO L85 PathProgramCache]: Analyzing trace with hash -875864605, now seen corresponding path program 1 times [2022-11-23 02:13:26,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:26,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881784257] [2022-11-23 02:13:26,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:26,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:26,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:26,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:26,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881784257] [2022-11-23 02:13:26,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881784257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:26,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:26,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:13:26,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178424852] [2022-11-23 02:13:26,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:26,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:13:26,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:26,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:13:26,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:13:26,182 INFO L87 Difference]: Start difference. First operand 196 states and 295 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-11-23 02:13:26,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:13:26,269 INFO L93 Difference]: Finished difference Result 504 states and 781 transitions. [2022-11-23 02:13:26,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:13:26,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2022-11-23 02:13:26,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:13:26,277 INFO L225 Difference]: With dead ends: 504 [2022-11-23 02:13:26,278 INFO L226 Difference]: Without dead ends: 334 [2022-11-23 02:13:26,284 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 [2022-11-23 02:13:26,286 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 57 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 227 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 [2022-11-23 02:13:26,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 227 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:13:26,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-11-23 02:13:26,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 332. [2022-11-23 02:13:26,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.5317220543806647) internal successors, (507), 331 states have internal predecessors, (507), 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) [2022-11-23 02:13:26,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 507 transitions. [2022-11-23 02:13:26,362 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 507 transitions. Word has length 50 [2022-11-23 02:13:26,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:13:26,362 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 507 transitions. [2022-11-23 02:13:26,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-11-23 02:13:26,363 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 507 transitions. [2022-11-23 02:13:26,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-23 02:13:26,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:13:26,364 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] [2022-11-23 02:13:26,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:13:26,365 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:13:26,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:26,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1524907140, now seen corresponding path program 1 times [2022-11-23 02:13:26,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:26,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459313525] [2022-11-23 02:13:26,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:26,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:26,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:26,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:26,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459313525] [2022-11-23 02:13:26,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459313525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:26,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:26,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:13:26,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170515105] [2022-11-23 02:13:26,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:26,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:13:26,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:26,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:13:26,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:13:26,555 INFO L87 Difference]: Start difference. First operand 332 states and 507 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2022-11-23 02:13:27,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:13:27,050 INFO L93 Difference]: Finished difference Result 2780 states and 4355 transitions. [2022-11-23 02:13:27,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:13:27,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 51 [2022-11-23 02:13:27,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:13:27,063 INFO L225 Difference]: With dead ends: 2780 [2022-11-23 02:13:27,063 INFO L226 Difference]: Without dead ends: 2474 [2022-11-23 02:13:27,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:13:27,077 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 697 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:13:27,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 1115 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:13:27,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2022-11-23 02:13:27,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 636. [2022-11-23 02:13:27,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 635 states have (on average 1.5291338582677165) internal successors, (971), 635 states have internal predecessors, (971), 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) [2022-11-23 02:13:27,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 971 transitions. [2022-11-23 02:13:27,198 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 971 transitions. Word has length 51 [2022-11-23 02:13:27,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:13:27,199 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 971 transitions. [2022-11-23 02:13:27,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2022-11-23 02:13:27,199 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 971 transitions. [2022-11-23 02:13:27,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-23 02:13:27,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:13:27,201 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] [2022-11-23 02:13:27,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 02:13:27,201 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:13:27,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:27,202 INFO L85 PathProgramCache]: Analyzing trace with hash -48905761, now seen corresponding path program 1 times [2022-11-23 02:13:27,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:27,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079331615] [2022-11-23 02:13:27,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:27,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:27,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:27,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079331615] [2022-11-23 02:13:27,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079331615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:27,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:27,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:13:27,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387318435] [2022-11-23 02:13:27,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:27,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:13:27,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:27,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:13:27,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:13:27,582 INFO L87 Difference]: Start difference. First operand 636 states and 971 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2022-11-23 02:13:27,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:13:27,798 INFO L93 Difference]: Finished difference Result 1248 states and 1917 transitions. [2022-11-23 02:13:27,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:13:27,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 53 [2022-11-23 02:13:27,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:13:27,803 INFO L225 Difference]: With dead ends: 1248 [2022-11-23 02:13:27,804 INFO L226 Difference]: Without dead ends: 638 [2022-11-23 02:13:27,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:13:27,806 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 215 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:13:27,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 342 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:13:27,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-11-23 02:13:27,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 636. [2022-11-23 02:13:27,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 635 states have (on average 1.5165354330708662) internal successors, (963), 635 states have internal predecessors, (963), 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) [2022-11-23 02:13:27,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 963 transitions. [2022-11-23 02:13:27,899 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 963 transitions. Word has length 53 [2022-11-23 02:13:27,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:13:27,900 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 963 transitions. [2022-11-23 02:13:27,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2022-11-23 02:13:27,900 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 963 transitions. [2022-11-23 02:13:27,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-23 02:13:27,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:13:27,901 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] [2022-11-23 02:13:27,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:13:27,902 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:13:27,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:27,902 INFO L85 PathProgramCache]: Analyzing trace with hash -69908416, now seen corresponding path program 1 times [2022-11-23 02:13:27,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:27,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121611336] [2022-11-23 02:13:27,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:27,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:27,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:27,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121611336] [2022-11-23 02:13:27,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121611336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:27,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:27,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:13:27,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663436279] [2022-11-23 02:13:27,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:27,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:13:27,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:27,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:13:27,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:13:27,984 INFO L87 Difference]: Start difference. First operand 636 states and 963 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2022-11-23 02:13:28,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:13:28,177 INFO L93 Difference]: Finished difference Result 1768 states and 2685 transitions. [2022-11-23 02:13:28,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:13:28,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2022-11-23 02:13:28,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:13:28,182 INFO L225 Difference]: With dead ends: 1768 [2022-11-23 02:13:28,182 INFO L226 Difference]: Without dead ends: 1158 [2022-11-23 02:13:28,184 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 [2022-11-23 02:13:28,184 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 47 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 181 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 [2022-11-23 02:13:28,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 181 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:13:28,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2022-11-23 02:13:28,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1140. [2022-11-23 02:13:28,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1139 states have (on average 1.4846356453028973) internal successors, (1691), 1139 states have internal predecessors, (1691), 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) [2022-11-23 02:13:28,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1691 transitions. [2022-11-23 02:13:28,370 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1691 transitions. Word has length 53 [2022-11-23 02:13:28,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:13:28,372 INFO L495 AbstractCegarLoop]: Abstraction has 1140 states and 1691 transitions. [2022-11-23 02:13:28,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2022-11-23 02:13:28,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1691 transitions. [2022-11-23 02:13:28,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-23 02:13:28,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:13:28,374 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] [2022-11-23 02:13:28,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:13:28,374 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:13:28,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:28,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1517987980, now seen corresponding path program 1 times [2022-11-23 02:13:28,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:28,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410219089] [2022-11-23 02:13:28,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:28,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:28,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:28,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:28,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410219089] [2022-11-23 02:13:28,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410219089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:28,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:28,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:13:28,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473732408] [2022-11-23 02:13:28,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:28,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:13:28,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:28,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:13:28,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:13:28,504 INFO L87 Difference]: Start difference. First operand 1140 states and 1691 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2022-11-23 02:13:28,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:13:28,782 INFO L93 Difference]: Finished difference Result 2254 states and 3356 transitions. [2022-11-23 02:13:28,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:13:28,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2022-11-23 02:13:28,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:13:28,788 INFO L225 Difference]: With dead ends: 2254 [2022-11-23 02:13:28,789 INFO L226 Difference]: Without dead ends: 1140 [2022-11-23 02:13:28,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:13:28,791 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 245 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:13:28,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 94 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:13:28,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2022-11-23 02:13:28,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1140. [2022-11-23 02:13:28,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1139 states have (on average 1.4705882352941178) internal successors, (1675), 1139 states have internal predecessors, (1675), 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) [2022-11-23 02:13:28,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1675 transitions. [2022-11-23 02:13:28,982 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1675 transitions. Word has length 54 [2022-11-23 02:13:28,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:13:28,982 INFO L495 AbstractCegarLoop]: Abstraction has 1140 states and 1675 transitions. [2022-11-23 02:13:28,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2022-11-23 02:13:28,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1675 transitions. [2022-11-23 02:13:28,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-23 02:13:28,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:13:28,986 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] [2022-11-23 02:13:28,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 02:13:28,986 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:13:28,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:28,988 INFO L85 PathProgramCache]: Analyzing trace with hash -2047278481, now seen corresponding path program 1 times [2022-11-23 02:13:28,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:28,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557498781] [2022-11-23 02:13:28,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:28,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:29,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:29,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:29,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557498781] [2022-11-23 02:13:29,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557498781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:29,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:29,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:13:29,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006228161] [2022-11-23 02:13:29,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:29,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:13:29,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:29,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:13:29,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:13:29,110 INFO L87 Difference]: Start difference. First operand 1140 states and 1675 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2022-11-23 02:13:29,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:13:29,392 INFO L93 Difference]: Finished difference Result 2254 states and 3324 transitions. [2022-11-23 02:13:29,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:13:29,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2022-11-23 02:13:29,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:13:29,398 INFO L225 Difference]: With dead ends: 2254 [2022-11-23 02:13:29,398 INFO L226 Difference]: Without dead ends: 1140 [2022-11-23 02:13:29,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:13:29,401 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 268 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:13:29,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 78 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:13:29,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2022-11-23 02:13:29,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1140. [2022-11-23 02:13:29,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1139 states have (on average 1.456540825285338) internal successors, (1659), 1139 states have internal predecessors, (1659), 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) [2022-11-23 02:13:29,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1659 transitions. [2022-11-23 02:13:29,604 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1659 transitions. Word has length 54 [2022-11-23 02:13:29,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:13:29,605 INFO L495 AbstractCegarLoop]: Abstraction has 1140 states and 1659 transitions. [2022-11-23 02:13:29,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2022-11-23 02:13:29,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1659 transitions. [2022-11-23 02:13:29,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-23 02:13:29,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:13:29,606 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] [2022-11-23 02:13:29,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 02:13:29,611 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:13:29,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:29,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1919193174, now seen corresponding path program 1 times [2022-11-23 02:13:29,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:29,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167524033] [2022-11-23 02:13:29,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:29,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:29,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:29,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:29,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167524033] [2022-11-23 02:13:29,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167524033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:29,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:29,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:13:29,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557541023] [2022-11-23 02:13:29,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:29,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:13:29,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:29,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:13:29,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:13:29,726 INFO L87 Difference]: Start difference. First operand 1140 states and 1659 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2022-11-23 02:13:29,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:13:29,989 INFO L93 Difference]: Finished difference Result 2254 states and 3292 transitions. [2022-11-23 02:13:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:13:29,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2022-11-23 02:13:29,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:13:29,995 INFO L225 Difference]: With dead ends: 2254 [2022-11-23 02:13:29,995 INFO L226 Difference]: Without dead ends: 1140 [2022-11-23 02:13:29,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:13:30,001 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 252 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:13:30,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 86 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:13:30,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2022-11-23 02:13:30,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1140. [2022-11-23 02:13:30,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1139 states have (on average 1.4424934152765583) internal successors, (1643), 1139 states have internal predecessors, (1643), 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) [2022-11-23 02:13:30,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1643 transitions. [2022-11-23 02:13:30,209 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1643 transitions. Word has length 54 [2022-11-23 02:13:30,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:13:30,210 INFO L495 AbstractCegarLoop]: Abstraction has 1140 states and 1643 transitions. [2022-11-23 02:13:30,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2022-11-23 02:13:30,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1643 transitions. [2022-11-23 02:13:30,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-23 02:13:30,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:13:30,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:13:30,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 02:13:30,211 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:13:30,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:30,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1053660785, now seen corresponding path program 1 times [2022-11-23 02:13:30,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:30,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658351555] [2022-11-23 02:13:30,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:30,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:30,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:30,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:30,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658351555] [2022-11-23 02:13:30,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658351555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:30,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:30,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:13:30,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280736010] [2022-11-23 02:13:30,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:30,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:13:30,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:30,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:13:30,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:13:30,439 INFO L87 Difference]: Start difference. First operand 1140 states and 1643 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2022-11-23 02:13:30,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:13:30,846 INFO L93 Difference]: Finished difference Result 1929 states and 2780 transitions. [2022-11-23 02:13:30,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:13:30,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 54 [2022-11-23 02:13:30,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:13:30,854 INFO L225 Difference]: With dead ends: 1929 [2022-11-23 02:13:30,854 INFO L226 Difference]: Without dead ends: 1927 [2022-11-23 02:13:30,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:13:30,856 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 142 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:13:30,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 507 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:13:30,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2022-11-23 02:13:31,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1172. [2022-11-23 02:13:31,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1171 states have (on average 1.4235695986336465) internal successors, (1667), 1171 states have internal predecessors, (1667), 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) [2022-11-23 02:13:31,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1667 transitions. [2022-11-23 02:13:31,128 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1667 transitions. Word has length 54 [2022-11-23 02:13:31,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:13:31,128 INFO L495 AbstractCegarLoop]: Abstraction has 1172 states and 1667 transitions. [2022-11-23 02:13:31,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2022-11-23 02:13:31,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1667 transitions. [2022-11-23 02:13:31,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-23 02:13:31,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:13:31,130 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] [2022-11-23 02:13:31,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 02:13:31,130 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:13:31,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:31,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1226019551, now seen corresponding path program 1 times [2022-11-23 02:13:31,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:31,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934197862] [2022-11-23 02:13:31,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:31,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:31,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:31,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:31,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934197862] [2022-11-23 02:13:31,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934197862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:31,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:31,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:13:31,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560142240] [2022-11-23 02:13:31,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:31,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:13:31,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:31,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:13:31,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:13:31,176 INFO L87 Difference]: Start difference. First operand 1172 states and 1667 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2022-11-23 02:13:31,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:13:31,519 INFO L93 Difference]: Finished difference Result 2299 states and 3305 transitions. [2022-11-23 02:13:31,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:13:31,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2022-11-23 02:13:31,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:13:31,526 INFO L225 Difference]: With dead ends: 2299 [2022-11-23 02:13:31,526 INFO L226 Difference]: Without dead ends: 1656 [2022-11-23 02:13:31,527 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 [2022-11-23 02:13:31,528 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 66 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 234 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 [2022-11-23 02:13:31,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 234 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:13:31,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2022-11-23 02:13:31,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1654. [2022-11-23 02:13:31,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1653 states have (on average 1.4162129461584998) internal successors, (2341), 1653 states have internal predecessors, (2341), 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) [2022-11-23 02:13:31,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2341 transitions. [2022-11-23 02:13:31,866 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2341 transitions. Word has length 54 [2022-11-23 02:13:31,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:13:31,866 INFO L495 AbstractCegarLoop]: Abstraction has 1654 states and 2341 transitions. [2022-11-23 02:13:31,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2022-11-23 02:13:31,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2341 transitions. [2022-11-23 02:13:31,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 02:13:31,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:13:31,868 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 02:13:31,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 02:13:31,869 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:13:31,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:31,869 INFO L85 PathProgramCache]: Analyzing trace with hash 595199301, now seen corresponding path program 1 times [2022-11-23 02:13:31,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:31,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668658372] [2022-11-23 02:13:31,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:31,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:32,011 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 02:13:32,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:32,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668658372] [2022-11-23 02:13:32,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668658372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:32,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:32,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:13:32,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20284105] [2022-11-23 02:13:32,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:32,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:13:32,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:32,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:13:32,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:13:32,014 INFO L87 Difference]: Start difference. First operand 1654 states and 2341 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2022-11-23 02:13:33,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:13:33,541 INFO L93 Difference]: Finished difference Result 8472 states and 12022 transitions. [2022-11-23 02:13:33,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:13:33,542 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 77 [2022-11-23 02:13:33,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:13:33,563 INFO L225 Difference]: With dead ends: 8472 [2022-11-23 02:13:33,563 INFO L226 Difference]: Without dead ends: 6846 [2022-11-23 02:13:33,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:13:33,567 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 486 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:13:33,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 563 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:13:33,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6846 states. [2022-11-23 02:13:34,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6846 to 3278. [2022-11-23 02:13:34,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3277 states have (on average 1.4125724748245347) internal successors, (4629), 3277 states have internal predecessors, (4629), 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) [2022-11-23 02:13:34,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 4629 transitions. [2022-11-23 02:13:34,396 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 4629 transitions. Word has length 77 [2022-11-23 02:13:34,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:13:34,397 INFO L495 AbstractCegarLoop]: Abstraction has 3278 states and 4629 transitions. [2022-11-23 02:13:34,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2022-11-23 02:13:34,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 4629 transitions. [2022-11-23 02:13:34,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 02:13:34,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:13:34,399 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 02:13:34,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 02:13:34,400 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:13:34,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:34,400 INFO L85 PathProgramCache]: Analyzing trace with hash -558746805, now seen corresponding path program 1 times [2022-11-23 02:13:34,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:34,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873884429] [2022-11-23 02:13:34,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:34,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:34,540 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 02:13:34,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:34,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873884429] [2022-11-23 02:13:34,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873884429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:34,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:34,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:13:34,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353449892] [2022-11-23 02:13:34,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:34,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:13:34,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:34,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:13:34,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:13:34,543 INFO L87 Difference]: Start difference. First operand 3278 states and 4629 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2022-11-23 02:13:36,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:13:36,181 INFO L93 Difference]: Finished difference Result 10096 states and 14310 transitions. [2022-11-23 02:13:36,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:13:36,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 77 [2022-11-23 02:13:36,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:13:36,212 INFO L225 Difference]: With dead ends: 10096 [2022-11-23 02:13:36,212 INFO L226 Difference]: Without dead ends: 8470 [2022-11-23 02:13:36,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:13:36,217 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 473 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:13:36,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 577 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:13:36,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8470 states. [2022-11-23 02:13:37,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8470 to 5718. [2022-11-23 02:13:37,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5718 states, 5717 states have (on average 1.4065069092181215) internal successors, (8041), 5717 states have internal predecessors, (8041), 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) [2022-11-23 02:13:37,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 8041 transitions. [2022-11-23 02:13:37,246 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 8041 transitions. Word has length 77 [2022-11-23 02:13:37,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:13:37,246 INFO L495 AbstractCegarLoop]: Abstraction has 5718 states and 8041 transitions. [2022-11-23 02:13:37,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2022-11-23 02:13:37,247 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 8041 transitions. [2022-11-23 02:13:37,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 02:13:37,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:13:37,248 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 02:13:37,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 02:13:37,249 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:13:37,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:37,249 INFO L85 PathProgramCache]: Analyzing trace with hash -262701377, now seen corresponding path program 1 times [2022-11-23 02:13:37,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:37,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463815124] [2022-11-23 02:13:37,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:37,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 02:13:37,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:37,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463815124] [2022-11-23 02:13:37,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463815124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:37,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:37,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:13:37,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139591249] [2022-11-23 02:13:37,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:37,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:13:37,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:37,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:13:37,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:13:37,384 INFO L87 Difference]: Start difference. First operand 5718 states and 8041 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2022-11-23 02:13:39,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:13:39,170 INFO L93 Difference]: Finished difference Result 11720 states and 16598 transitions. [2022-11-23 02:13:39,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:13:39,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 77 [2022-11-23 02:13:39,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:13:39,193 INFO L225 Difference]: With dead ends: 11720 [2022-11-23 02:13:39,194 INFO L226 Difference]: Without dead ends: 10094 [2022-11-23 02:13:39,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:13:39,200 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 438 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:13:39,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 663 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:13:39,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10094 states. [2022-11-23 02:13:40,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10094 to 7342. [2022-11-23 02:13:40,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7342 states, 7341 states have (on average 1.4070290151205558) internal successors, (10329), 7341 states have internal predecessors, (10329), 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) [2022-11-23 02:13:40,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7342 states to 7342 states and 10329 transitions. [2022-11-23 02:13:40,622 INFO L78 Accepts]: Start accepts. Automaton has 7342 states and 10329 transitions. Word has length 77 [2022-11-23 02:13:40,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:13:40,623 INFO L495 AbstractCegarLoop]: Abstraction has 7342 states and 10329 transitions. [2022-11-23 02:13:40,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2022-11-23 02:13:40,623 INFO L276 IsEmpty]: Start isEmpty. Operand 7342 states and 10329 transitions. [2022-11-23 02:13:40,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-23 02:13:40,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:13:40,625 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 02:13:40,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 02:13:40,626 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:13:40,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:40,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2055185859, now seen corresponding path program 1 times [2022-11-23 02:13:40,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:40,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650014622] [2022-11-23 02:13:40,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:40,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:13:40,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:40,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650014622] [2022-11-23 02:13:40,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650014622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:40,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:40,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:13:40,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742782522] [2022-11-23 02:13:40,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:40,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:13:40,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:40,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:13:40,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:13:40,758 INFO L87 Difference]: Start difference. First operand 7342 states and 10329 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2022-11-23 02:13:43,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:13:43,021 INFO L93 Difference]: Finished difference Result 12336 states and 17494 transitions. [2022-11-23 02:13:43,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:13:43,022 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 78 [2022-11-23 02:13:43,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:13:43,052 INFO L225 Difference]: With dead ends: 12336 [2022-11-23 02:13:43,052 INFO L226 Difference]: Without dead ends: 11214 [2022-11-23 02:13:43,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:13:43,059 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 435 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:13:43,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 586 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:13:43,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11214 states. [2022-11-23 02:13:44,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11214 to 8462. [2022-11-23 02:13:44,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8462 states, 8461 states have (on average 1.4098806287672851) internal successors, (11929), 8461 states have internal predecessors, (11929), 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) [2022-11-23 02:13:44,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8462 states to 8462 states and 11929 transitions. [2022-11-23 02:13:44,829 INFO L78 Accepts]: Start accepts. Automaton has 8462 states and 11929 transitions. Word has length 78 [2022-11-23 02:13:44,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:13:44,829 INFO L495 AbstractCegarLoop]: Abstraction has 8462 states and 11929 transitions. [2022-11-23 02:13:44,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2022-11-23 02:13:44,829 INFO L276 IsEmpty]: Start isEmpty. Operand 8462 states and 11929 transitions. [2022-11-23 02:13:44,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-23 02:13:44,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:13:44,832 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 02:13:44,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 02:13:44,832 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:13:44,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:44,833 INFO L85 PathProgramCache]: Analyzing trace with hash -144941472, now seen corresponding path program 1 times [2022-11-23 02:13:44,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:44,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252241866] [2022-11-23 02:13:44,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:44,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:44,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:44,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252241866] [2022-11-23 02:13:44,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252241866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:44,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:44,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:13:44,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387077406] [2022-11-23 02:13:44,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:44,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:13:44,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:44,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:13:44,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:13:44,958 INFO L87 Difference]: Start difference. First operand 8462 states and 11929 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-11-23 02:13:45,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:13:45,967 INFO L93 Difference]: Finished difference Result 14658 states and 20769 transitions. [2022-11-23 02:13:45,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:13:45,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2022-11-23 02:13:45,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:13:45,981 INFO L225 Difference]: With dead ends: 14658 [2022-11-23 02:13:45,981 INFO L226 Difference]: Without dead ends: 6224 [2022-11-23 02:13:45,992 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 [2022-11-23 02:13:45,993 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 48 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:13:45,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 226 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:13:46,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6224 states. [2022-11-23 02:13:47,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6224 to 6222. [2022-11-23 02:13:47,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6222 states, 6221 states have (on average 1.4110271660504743) internal successors, (8778), 6221 states have internal predecessors, (8778), 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) [2022-11-23 02:13:47,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 8778 transitions. [2022-11-23 02:13:47,053 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 8778 transitions. Word has length 79 [2022-11-23 02:13:47,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:13:47,053 INFO L495 AbstractCegarLoop]: Abstraction has 6222 states and 8778 transitions. [2022-11-23 02:13:47,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-11-23 02:13:47,054 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 8778 transitions. [2022-11-23 02:13:47,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-23 02:13:47,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:13:47,055 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 02:13:47,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 02:13:47,055 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:13:47,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:47,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1559581035, now seen corresponding path program 1 times [2022-11-23 02:13:47,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:47,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624812112] [2022-11-23 02:13:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:47,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:47,712 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:47,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:47,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624812112] [2022-11-23 02:13:47,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624812112] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:13:47,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770719346] [2022-11-23 02:13:47,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:47,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:13:47,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:13:47,723 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:13:47,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:13:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:47,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 02:13:47,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:13:48,221 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:13:48,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:13:48,425 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 02:13:48,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770719346] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:13:48,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:13:48,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2022-11-23 02:13:48,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905370621] [2022-11-23 02:13:48,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:13:48,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 02:13:48,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:48,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 02:13:48,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-23 02:13:48,428 INFO L87 Difference]: Start difference. First operand 6222 states and 8778 transitions. Second operand has 18 states, 18 states have (on average 12.38888888888889) internal successors, (223), 18 states have internal predecessors, (223), 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) [2022-11-23 02:14:25,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:14:25,862 INFO L93 Difference]: Finished difference Result 114899 states and 157659 transitions. [2022-11-23 02:14:25,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2022-11-23 02:14:25,863 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.38888888888889) internal successors, (223), 18 states have internal predecessors, (223), 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 79 [2022-11-23 02:14:25,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:14:26,144 INFO L225 Difference]: With dead ends: 114899 [2022-11-23 02:14:26,145 INFO L226 Difference]: Without dead ends: 108737 [2022-11-23 02:14:26,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20870 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=6456, Invalid=39126, Unknown=0, NotChecked=0, Total=45582 [2022-11-23 02:14:26,189 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 7895 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7895 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 1997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:14:26,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7895 Valid, 1453 Invalid, 1997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-23 02:14:26,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108737 states. [2022-11-23 02:14:38,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108737 to 46580. [2022-11-23 02:14:38,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46580 states, 46579 states have (on average 1.3533566628738272) internal successors, (63038), 46579 states have internal predecessors, (63038), 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) [2022-11-23 02:14:38,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46580 states to 46580 states and 63038 transitions. [2022-11-23 02:14:38,210 INFO L78 Accepts]: Start accepts. Automaton has 46580 states and 63038 transitions. Word has length 79 [2022-11-23 02:14:38,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:14:38,210 INFO L495 AbstractCegarLoop]: Abstraction has 46580 states and 63038 transitions. [2022-11-23 02:14:38,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.38888888888889) internal successors, (223), 18 states have internal predecessors, (223), 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) [2022-11-23 02:14:38,211 INFO L276 IsEmpty]: Start isEmpty. Operand 46580 states and 63038 transitions. [2022-11-23 02:14:38,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 02:14:38,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:14:38,218 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 02:14:38,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:38,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 02:14:38,425 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:14:38,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:38,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1183040057, now seen corresponding path program 1 times [2022-11-23 02:14:38,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:14:38,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488372404] [2022-11-23 02:14:38,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:14:38,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:14:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:14:38,826 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:38,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:14:38,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488372404] [2022-11-23 02:14:38,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488372404] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:14:38,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48322047] [2022-11-23 02:14:38,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:14:38,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:14:38,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:14:38,833 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:14:38,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a968c4-7d97-400f-a581-ba1ee9e8ee83/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:14:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:14:38,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-23 02:14:38,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:39,927 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:39,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:14:40,693 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:40,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48322047] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:14:40,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:14:40,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-11-23 02:14:40,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637535424] [2022-11-23 02:14:40,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:14:40,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 02:14:40,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:14:40,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 02:14:40,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2022-11-23 02:14:40,696 INFO L87 Difference]: Start difference. First operand 46580 states and 63038 transitions. Second operand has 25 states, 25 states have (on average 9.08) internal successors, (227), 24 states have internal predecessors, (227), 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)