./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8 --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 850d02aa9cb18294f9975f6e4e447a197934bcfd77c20fda5c55e9f9e3e0a979 --- 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-e04fb08 [2022-11-16 11:34:25,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:34:25,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:34:25,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:34:25,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:34:25,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:34:25,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:34:25,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:34:25,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:34:25,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:34:25,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:34:25,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:34:25,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:34:25,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:34:25,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:34:25,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:34:25,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:34:25,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:34:25,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:34:25,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:34:25,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:34:25,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:34:25,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:34:25,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:34:25,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:34:25,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:34:25,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:34:25,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:34:25,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:34:25,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:34:25,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:34:25,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:34:25,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:34:25,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:34:25,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:34:25,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:34:25,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:34:25,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:34:25,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:34:25,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:34:25,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:34:25,682 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:34:25,721 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:34:25,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:34:25,722 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:34:25,723 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:34:25,724 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:34:25,724 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:34:25,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:34:25,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:34:25,726 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:34:25,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:34:25,727 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:34:25,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:34:25,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:34:25,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:34:25,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:34:25,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:34:25,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:34:25,729 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:34:25,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:34:25,730 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:34:25,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:34:25,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:34:25,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:34:25,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:34:25,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:34:25,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:34:25,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:34:25,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:34:25,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:34:25,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:34:25,735 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:34:25,735 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:34:25,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:34:25,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 850d02aa9cb18294f9975f6e4e447a197934bcfd77c20fda5c55e9f9e3e0a979 [2022-11-16 11:34:26,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:34:26,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:34:26,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:34:26,096 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:34:26,097 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:34:26,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c [2022-11-16 11:34:26,173 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/data/6be51c8f5/b7c6f6e34eea4b8291d7d94a74c99c84/FLAG3241c905e [2022-11-16 11:34:26,762 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:34:26,762 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c [2022-11-16 11:34:26,778 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/data/6be51c8f5/b7c6f6e34eea4b8291d7d94a74c99c84/FLAG3241c905e [2022-11-16 11:34:27,083 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/data/6be51c8f5/b7c6f6e34eea4b8291d7d94a74c99c84 [2022-11-16 11:34:27,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:34:27,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:34:27,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:34:27,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:34:27,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:34:27,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:34:27" (1/1) ... [2022-11-16 11:34:27,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e9462b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:27, skipping insertion in model container [2022-11-16 11:34:27,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:34:27" (1/1) ... [2022-11-16 11:34:27,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:34:27,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:34:27,457 WARN L229 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_83be5ab5-819e-49eb-820e-af7543b552b3/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c[6787,6800] [2022-11-16 11:34:27,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:34:27,481 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:34:27,557 WARN L229 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_83be5ab5-819e-49eb-820e-af7543b552b3/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c[6787,6800] [2022-11-16 11:34:27,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:34:27,590 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:34:27,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:27 WrapperNode [2022-11-16 11:34:27,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:34:27,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:34:27,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:34:27,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:34:27,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:27" (1/1) ... [2022-11-16 11:34:27,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:27" (1/1) ... [2022-11-16 11:34:27,679 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 226 [2022-11-16 11:34:27,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:34:27,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:34:27,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:34:27,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:34:27,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:27" (1/1) ... [2022-11-16 11:34:27,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:27" (1/1) ... [2022-11-16 11:34:27,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:27" (1/1) ... [2022-11-16 11:34:27,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:27" (1/1) ... [2022-11-16 11:34:27,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:27" (1/1) ... [2022-11-16 11:34:27,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:27" (1/1) ... [2022-11-16 11:34:27,733 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:27" (1/1) ... [2022-11-16 11:34:27,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:27" (1/1) ... [2022-11-16 11:34:27,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:34:27,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:34:27,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:34:27,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:34:27,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:27" (1/1) ... [2022-11-16 11:34:27,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:34:27,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:27,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:34:27,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:34:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:34:27,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:34:27,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:34:27,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:34:28,004 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:34:28,006 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:34:28,519 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:34:28,526 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:34:28,526 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:34:28,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:34:28 BoogieIcfgContainer [2022-11-16 11:34:28,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:34:28,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:34:28,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:34:28,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:34:28,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:34:27" (1/3) ... [2022-11-16 11:34:28,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd577c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:34:28, skipping insertion in model container [2022-11-16 11:34:28,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:34:27" (2/3) ... [2022-11-16 11:34:28,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd577c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:34:28, skipping insertion in model container [2022-11-16 11:34:28,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:34:28" (3/3) ... [2022-11-16 11:34:28,559 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c [2022-11-16 11:34:28,584 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:34:28,584 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:34:28,684 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:34:28,692 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;@3e513470, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:34:28,692 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:34:28,698 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 66 states have (on average 1.696969696969697) internal successors, (112), 67 states have internal predecessors, (112), 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) [2022-11-16 11:34:28,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 11:34:28,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:28,708 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] [2022-11-16 11:34:28,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:28,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:28,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1726248240, now seen corresponding path program 1 times [2022-11-16 11:34:28,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:28,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917869486] [2022-11-16 11:34:28,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:28,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:29,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:29,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:29,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917869486] [2022-11-16 11:34:29,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917869486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:29,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:29,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:34:29,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770773453] [2022-11-16 11:34:29,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:29,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:34:29,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:29,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:34:29,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:34:29,390 INFO L87 Difference]: Start difference. First operand has 68 states, 66 states have (on average 1.696969696969697) internal successors, (112), 67 states have internal predecessors, (112), 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 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2022-11-16 11:34:29,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:29,523 INFO L93 Difference]: Finished difference Result 113 states and 185 transitions. [2022-11-16 11:34:29,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:34:29,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 25 [2022-11-16 11:34:29,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:29,537 INFO L225 Difference]: With dead ends: 113 [2022-11-16 11:34:29,537 INFO L226 Difference]: Without dead ends: 64 [2022-11-16 11:34:29,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:34:29,544 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 3 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:29,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 392 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:34:29,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-16 11:34:29,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-16 11:34:29,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.3968253968253967) internal successors, (88), 63 states have internal predecessors, (88), 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) [2022-11-16 11:34:29,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 88 transitions. [2022-11-16 11:34:29,611 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 88 transitions. Word has length 25 [2022-11-16 11:34:29,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:29,613 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 88 transitions. [2022-11-16 11:34:29,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2022-11-16 11:34:29,615 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 88 transitions. [2022-11-16 11:34:29,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-16 11:34:29,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:29,618 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] [2022-11-16 11:34:29,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:34:29,619 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:29,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:29,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1777921530, now seen corresponding path program 1 times [2022-11-16 11:34:29,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:29,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884334450] [2022-11-16 11:34:29,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:29,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:30,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:30,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884334450] [2022-11-16 11:34:30,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884334450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:30,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:30,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:34:30,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389875945] [2022-11-16 11:34:30,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:30,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:34:30,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:30,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:34:30,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:34:30,024 INFO L87 Difference]: Start difference. First operand 64 states and 88 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2022-11-16 11:34:30,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:30,187 INFO L93 Difference]: Finished difference Result 228 states and 348 transitions. [2022-11-16 11:34:30,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:34:30,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 41 [2022-11-16 11:34:30,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:30,200 INFO L225 Difference]: With dead ends: 228 [2022-11-16 11:34:30,201 INFO L226 Difference]: Without dead ends: 187 [2022-11-16 11:34:30,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:34:30,203 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 368 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:30,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 327 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:34:30,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-16 11:34:30,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 103. [2022-11-16 11:34:30,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.4705882352941178) internal successors, (150), 102 states have internal predecessors, (150), 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) [2022-11-16 11:34:30,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 150 transitions. [2022-11-16 11:34:30,231 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 150 transitions. Word has length 41 [2022-11-16 11:34:30,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:30,232 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 150 transitions. [2022-11-16 11:34:30,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2022-11-16 11:34:30,232 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 150 transitions. [2022-11-16 11:34:30,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-16 11:34:30,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:30,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:30,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:34:30,235 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:30,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:30,242 INFO L85 PathProgramCache]: Analyzing trace with hash 335683958, now seen corresponding path program 1 times [2022-11-16 11:34:30,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:30,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583183805] [2022-11-16 11:34:30,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:30,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:30,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:30,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:30,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583183805] [2022-11-16 11:34:30,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583183805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:30,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:30,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:34:30,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724612240] [2022-11-16 11:34:30,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:30,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:34:30,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:30,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:34:30,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:34:30,634 INFO L87 Difference]: Start difference. First operand 103 states and 150 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:30,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:30,730 INFO L93 Difference]: Finished difference Result 191 states and 285 transitions. [2022-11-16 11:34:30,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:34:30,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-11-16 11:34:30,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:30,734 INFO L225 Difference]: With dead ends: 191 [2022-11-16 11:34:30,735 INFO L226 Difference]: Without dead ends: 189 [2022-11-16 11:34:30,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:34:30,738 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 174 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:30,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 404 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:34:30,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-16 11:34:30,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 109. [2022-11-16 11:34:30,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.4444444444444444) internal successors, (156), 108 states have internal predecessors, (156), 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) [2022-11-16 11:34:30,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 156 transitions. [2022-11-16 11:34:30,764 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 156 transitions. Word has length 42 [2022-11-16 11:34:30,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:30,765 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 156 transitions. [2022-11-16 11:34:30,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:34:30,765 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 156 transitions. [2022-11-16 11:34:30,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-16 11:34:30,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:30,767 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] [2022-11-16 11:34:30,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:34:30,768 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:30,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:30,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1868846558, now seen corresponding path program 1 times [2022-11-16 11:34:30,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:30,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686708253] [2022-11-16 11:34:30,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:30,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:30,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:30,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:30,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686708253] [2022-11-16 11:34:30,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686708253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:30,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:30,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:34:30,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061169572] [2022-11-16 11:34:30,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:30,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:34:30,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:30,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:30,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:34:30,881 INFO L87 Difference]: Start difference. First operand 109 states and 156 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2022-11-16 11:34:30,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:30,933 INFO L93 Difference]: Finished difference Result 266 states and 397 transitions. [2022-11-16 11:34:30,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:34:30,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2022-11-16 11:34:30,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:30,936 INFO L225 Difference]: With dead ends: 266 [2022-11-16 11:34:30,936 INFO L226 Difference]: Without dead ends: 180 [2022-11-16 11:34:30,939 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 [2022-11-16 11:34:30,949 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 37 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:30,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 145 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:34:30,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-16 11:34:30,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 176. [2022-11-16 11:34:30,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.4685714285714286) internal successors, (257), 175 states have internal predecessors, (257), 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) [2022-11-16 11:34:30,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 257 transitions. [2022-11-16 11:34:30,982 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 257 transitions. Word has length 43 [2022-11-16 11:34:30,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:30,983 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 257 transitions. [2022-11-16 11:34:30,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2022-11-16 11:34:30,983 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 257 transitions. [2022-11-16 11:34:30,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 11:34:30,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:30,991 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] [2022-11-16 11:34:30,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:34:30,992 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:30,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:30,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1065557743, now seen corresponding path program 1 times [2022-11-16 11:34:30,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:30,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615507805] [2022-11-16 11:34:30,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:30,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:31,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:31,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:31,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615507805] [2022-11-16 11:34:31,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615507805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:31,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:31,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:34:31,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849347620] [2022-11-16 11:34:31,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:31,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:34:31,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:31,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:31,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:34:31,074 INFO L87 Difference]: Start difference. First operand 176 states and 257 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2022-11-16 11:34:31,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:31,143 INFO L93 Difference]: Finished difference Result 450 states and 669 transitions. [2022-11-16 11:34:31,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:34:31,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2022-11-16 11:34:31,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:31,147 INFO L225 Difference]: With dead ends: 450 [2022-11-16 11:34:31,147 INFO L226 Difference]: Without dead ends: 297 [2022-11-16 11:34:31,150 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 [2022-11-16 11:34:31,151 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 45 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 171 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 [2022-11-16 11:34:31,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 171 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:34:31,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-11-16 11:34:31,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2022-11-16 11:34:31,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.4625850340136055) internal successors, (430), 294 states have internal predecessors, (430), 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) [2022-11-16 11:34:31,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 430 transitions. [2022-11-16 11:34:31,189 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 430 transitions. Word has length 44 [2022-11-16 11:34:31,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:31,190 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 430 transitions. [2022-11-16 11:34:31,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2022-11-16 11:34:31,190 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 430 transitions. [2022-11-16 11:34:31,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 11:34:31,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:31,192 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] [2022-11-16 11:34:31,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:34:31,193 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:31,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:31,193 INFO L85 PathProgramCache]: Analyzing trace with hash -735131185, now seen corresponding path program 1 times [2022-11-16 11:34:31,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:31,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886766928] [2022-11-16 11:34:31,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:31,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:31,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:31,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:31,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886766928] [2022-11-16 11:34:31,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886766928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:31,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:31,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:34:31,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852803593] [2022-11-16 11:34:31,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:31,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:34:31,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:31,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:31,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:34:31,261 INFO L87 Difference]: Start difference. First operand 295 states and 430 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2022-11-16 11:34:31,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:31,346 INFO L93 Difference]: Finished difference Result 775 states and 1132 transitions. [2022-11-16 11:34:31,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:34:31,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2022-11-16 11:34:31,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:31,350 INFO L225 Difference]: With dead ends: 775 [2022-11-16 11:34:31,350 INFO L226 Difference]: Without dead ends: 503 [2022-11-16 11:34:31,352 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 [2022-11-16 11:34:31,354 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 49 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 184 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 [2022-11-16 11:34:31,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 184 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:34:31,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-11-16 11:34:31,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 501. [2022-11-16 11:34:31,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.432) internal successors, (716), 500 states have internal predecessors, (716), 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) [2022-11-16 11:34:31,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 716 transitions. [2022-11-16 11:34:31,431 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 716 transitions. Word has length 44 [2022-11-16 11:34:31,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:31,431 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 716 transitions. [2022-11-16 11:34:31,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2022-11-16 11:34:31,432 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 716 transitions. [2022-11-16 11:34:31,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 11:34:31,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:31,436 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] [2022-11-16 11:34:31,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:34:31,437 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:31,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:31,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1047477949, now seen corresponding path program 1 times [2022-11-16 11:34:31,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:31,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381481751] [2022-11-16 11:34:31,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:31,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:31,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:31,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:31,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381481751] [2022-11-16 11:34:31,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381481751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:31,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:31,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:34:31,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182140593] [2022-11-16 11:34:31,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:31,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:34:31,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:31,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:31,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:34:31,527 INFO L87 Difference]: Start difference. First operand 501 states and 716 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2022-11-16 11:34:31,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:31,599 INFO L93 Difference]: Finished difference Result 980 states and 1418 transitions. [2022-11-16 11:34:31,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:34:31,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2022-11-16 11:34:31,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:31,604 INFO L225 Difference]: With dead ends: 980 [2022-11-16 11:34:31,604 INFO L226 Difference]: Without dead ends: 705 [2022-11-16 11:34:31,605 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 [2022-11-16 11:34:31,605 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 50 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 195 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 [2022-11-16 11:34:31,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 195 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:34:31,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-11-16 11:34:31,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 703. [2022-11-16 11:34:31,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 702 states have (on average 1.4216524216524216) internal successors, (998), 702 states have internal predecessors, (998), 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) [2022-11-16 11:34:31,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 998 transitions. [2022-11-16 11:34:31,687 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 998 transitions. Word has length 45 [2022-11-16 11:34:31,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:31,687 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 998 transitions. [2022-11-16 11:34:31,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2022-11-16 11:34:31,688 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 998 transitions. [2022-11-16 11:34:31,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 11:34:31,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:31,689 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] [2022-11-16 11:34:31,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:34:31,690 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:31,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:31,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1706838473, now seen corresponding path program 1 times [2022-11-16 11:34:31,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:31,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939816656] [2022-11-16 11:34:31,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:31,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:31,867 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:34:31,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:31,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939816656] [2022-11-16 11:34:31,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939816656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:31,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:31,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:34:31,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707183859] [2022-11-16 11:34:31,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:31,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:34:31,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:31,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:34:31,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:34:31,871 INFO L87 Difference]: Start difference. First operand 703 states and 998 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) [2022-11-16 11:34:32,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:32,060 INFO L93 Difference]: Finished difference Result 1623 states and 2346 transitions. [2022-11-16 11:34:32,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:34:32,061 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 63 [2022-11-16 11:34:32,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:32,067 INFO L225 Difference]: With dead ends: 1623 [2022-11-16 11:34:32,067 INFO L226 Difference]: Without dead ends: 1277 [2022-11-16 11:34:32,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:34:32,069 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 236 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:32,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 372 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:34:32,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2022-11-16 11:34:32,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1035. [2022-11-16 11:34:32,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 1.425531914893617) internal successors, (1474), 1034 states have internal predecessors, (1474), 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) [2022-11-16 11:34:32,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1474 transitions. [2022-11-16 11:34:32,185 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1474 transitions. Word has length 63 [2022-11-16 11:34:32,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:32,185 INFO L495 AbstractCegarLoop]: Abstraction has 1035 states and 1474 transitions. [2022-11-16 11:34:32,185 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) [2022-11-16 11:34:32,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1474 transitions. [2022-11-16 11:34:32,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 11:34:32,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:32,187 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] [2022-11-16 11:34:32,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:34:32,188 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:32,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:32,189 INFO L85 PathProgramCache]: Analyzing trace with hash 787439895, now seen corresponding path program 1 times [2022-11-16 11:34:32,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:32,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290623474] [2022-11-16 11:34:32,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:32,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:32,293 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:34:32,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:32,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290623474] [2022-11-16 11:34:32,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290623474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:32,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:32,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:34:32,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268047376] [2022-11-16 11:34:32,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:32,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:34:32,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:32,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:34:32,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:34:32,296 INFO L87 Difference]: Start difference. First operand 1035 states and 1474 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-11-16 11:34:32,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:32,502 INFO L93 Difference]: Finished difference Result 1955 states and 2822 transitions. [2022-11-16 11:34:32,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:34:32,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 63 [2022-11-16 11:34:32,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:32,509 INFO L225 Difference]: With dead ends: 1955 [2022-11-16 11:34:32,510 INFO L226 Difference]: Without dead ends: 1609 [2022-11-16 11:34:32,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:34:32,513 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 229 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:32,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 392 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:34:32,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2022-11-16 11:34:32,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1367. [2022-11-16 11:34:32,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1366 states have (on average 1.4275256222547583) internal successors, (1950), 1366 states have internal predecessors, (1950), 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) [2022-11-16 11:34:32,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1950 transitions. [2022-11-16 11:34:32,652 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1950 transitions. Word has length 63 [2022-11-16 11:34:32,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:32,652 INFO L495 AbstractCegarLoop]: Abstraction has 1367 states and 1950 transitions. [2022-11-16 11:34:32,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-11-16 11:34:32,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1950 transitions. [2022-11-16 11:34:32,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-16 11:34:32,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:32,655 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:32,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:34:32,655 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:32,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:32,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1002541173, now seen corresponding path program 1 times [2022-11-16 11:34:32,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:32,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556879604] [2022-11-16 11:34:32,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:32,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:32,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:32,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556879604] [2022-11-16 11:34:32,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556879604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:32,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:32,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:34:32,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820007470] [2022-11-16 11:34:32,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:32,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:34:32,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:32,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:32,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:34:32,803 INFO L87 Difference]: Start difference. First operand 1367 states and 1950 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-11-16 11:34:32,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:32,955 INFO L93 Difference]: Finished difference Result 2711 states and 3876 transitions. [2022-11-16 11:34:32,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:34:32,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-11-16 11:34:32,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:32,961 INFO L225 Difference]: With dead ends: 2711 [2022-11-16 11:34:32,962 INFO L226 Difference]: Without dead ends: 1369 [2022-11-16 11:34:32,963 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 [2022-11-16 11:34:32,964 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 40 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 182 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 [2022-11-16 11:34:32,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 182 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:34:32,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2022-11-16 11:34:33,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1367. [2022-11-16 11:34:33,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1366 states have (on average 1.4099560761346999) internal successors, (1926), 1366 states have internal predecessors, (1926), 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) [2022-11-16 11:34:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1926 transitions. [2022-11-16 11:34:33,116 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1926 transitions. Word has length 64 [2022-11-16 11:34:33,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:33,117 INFO L495 AbstractCegarLoop]: Abstraction has 1367 states and 1926 transitions. [2022-11-16 11:34:33,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-11-16 11:34:33,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1926 transitions. [2022-11-16 11:34:33,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-16 11:34:33,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:33,119 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] [2022-11-16 11:34:33,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:34:33,120 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:33,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:33,121 INFO L85 PathProgramCache]: Analyzing trace with hash -482482316, now seen corresponding path program 1 times [2022-11-16 11:34:33,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:33,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853187301] [2022-11-16 11:34:33,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:33,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:33,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:33,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853187301] [2022-11-16 11:34:33,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853187301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:33,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:33,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:34:33,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082405016] [2022-11-16 11:34:33,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:33,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:34:33,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:33,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:33,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:34:33,255 INFO L87 Difference]: Start difference. First operand 1367 states and 1926 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-11-16 11:34:33,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:33,331 INFO L93 Difference]: Finished difference Result 2041 states and 2878 transitions. [2022-11-16 11:34:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:34:33,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-11-16 11:34:33,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:33,335 INFO L225 Difference]: With dead ends: 2041 [2022-11-16 11:34:33,335 INFO L226 Difference]: Without dead ends: 699 [2022-11-16 11:34:33,337 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 [2022-11-16 11:34:33,337 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 34 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 163 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 [2022-11-16 11:34:33,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 163 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:34:33,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-11-16 11:34:33,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 697. [2022-11-16 11:34:33,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 1.3850574712643677) internal successors, (964), 696 states have internal predecessors, (964), 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) [2022-11-16 11:34:33,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 964 transitions. [2022-11-16 11:34:33,401 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 964 transitions. Word has length 64 [2022-11-16 11:34:33,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:33,401 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 964 transitions. [2022-11-16 11:34:33,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-11-16 11:34:33,402 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 964 transitions. [2022-11-16 11:34:33,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-16 11:34:33,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:33,403 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] [2022-11-16 11:34:33,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:34:33,403 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:33,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:33,404 INFO L85 PathProgramCache]: Analyzing trace with hash -96233997, now seen corresponding path program 1 times [2022-11-16 11:34:33,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:33,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933554188] [2022-11-16 11:34:33,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:33,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:34,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:34,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933554188] [2022-11-16 11:34:34,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933554188] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:34,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610946248] [2022-11-16 11:34:34,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:34,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:34,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:34,126 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:34,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:34:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:34,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:34:34,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:34:34,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:34:34,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610946248] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:34,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:34:34,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 14 [2022-11-16 11:34:34,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916125804] [2022-11-16 11:34:34,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:34,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:34:34,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:34,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:34:34,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:34:34,803 INFO L87 Difference]: Start difference. First operand 697 states and 964 transitions. Second operand has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 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) [2022-11-16 11:34:39,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:39,226 INFO L93 Difference]: Finished difference Result 5513 states and 7573 transitions. [2022-11-16 11:34:39,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-16 11:34:39,227 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 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 64 [2022-11-16 11:34:39,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:39,244 INFO L225 Difference]: With dead ends: 5513 [2022-11-16 11:34:39,244 INFO L226 Difference]: Without dead ends: 5039 [2022-11-16 11:34:39,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 971 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=727, Invalid=2465, Unknown=0, NotChecked=0, Total=3192 [2022-11-16 11:34:39,248 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 2591 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2591 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:39,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2591 Valid, 1048 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 11:34:39,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5039 states. [2022-11-16 11:34:39,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5039 to 3245. [2022-11-16 11:34:39,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3245 states, 3244 states have (on average 1.3643649815043157) internal successors, (4426), 3244 states have internal predecessors, (4426), 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) [2022-11-16 11:34:39,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3245 states to 3245 states and 4426 transitions. [2022-11-16 11:34:39,726 INFO L78 Accepts]: Start accepts. Automaton has 3245 states and 4426 transitions. Word has length 64 [2022-11-16 11:34:39,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:39,727 INFO L495 AbstractCegarLoop]: Abstraction has 3245 states and 4426 transitions. [2022-11-16 11:34:39,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 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) [2022-11-16 11:34:39,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3245 states and 4426 transitions. [2022-11-16 11:34:39,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 11:34:39,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:39,729 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] [2022-11-16 11:34:39,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:39,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 11:34:39,935 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:39,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:39,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2034501574, now seen corresponding path program 1 times [2022-11-16 11:34:39,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:39,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456635652] [2022-11-16 11:34:39,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:39,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:40,027 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:34:40,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:40,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456635652] [2022-11-16 11:34:40,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456635652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:40,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:40,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:34:40,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594910849] [2022-11-16 11:34:40,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:40,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:34:40,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:40,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:34:40,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:34:40,031 INFO L87 Difference]: Start difference. First operand 3245 states and 4426 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2022-11-16 11:34:40,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:40,533 INFO L93 Difference]: Finished difference Result 5280 states and 7251 transitions. [2022-11-16 11:34:40,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:34:40,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 65 [2022-11-16 11:34:40,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:40,549 INFO L225 Difference]: With dead ends: 5280 [2022-11-16 11:34:40,550 INFO L226 Difference]: Without dead ends: 4635 [2022-11-16 11:34:40,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:34:40,552 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 221 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:40,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 385 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:34:40,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4635 states. [2022-11-16 11:34:40,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4635 to 3910. [2022-11-16 11:34:40,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3910 states, 3909 states have (on average 1.3624968022512152) internal successors, (5326), 3909 states have internal predecessors, (5326), 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) [2022-11-16 11:34:40,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3910 states to 3910 states and 5326 transitions. [2022-11-16 11:34:40,975 INFO L78 Accepts]: Start accepts. Automaton has 3910 states and 5326 transitions. Word has length 65 [2022-11-16 11:34:40,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:40,975 INFO L495 AbstractCegarLoop]: Abstraction has 3910 states and 5326 transitions. [2022-11-16 11:34:40,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2022-11-16 11:34:40,976 INFO L276 IsEmpty]: Start isEmpty. Operand 3910 states and 5326 transitions. [2022-11-16 11:34:40,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 11:34:40,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:40,977 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:34:40,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:34:40,978 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:40,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:40,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1099704894, now seen corresponding path program 1 times [2022-11-16 11:34:40,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:40,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470856116] [2022-11-16 11:34:40,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:40,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:41,064 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:41,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:41,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470856116] [2022-11-16 11:34:41,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470856116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:34:41,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:34:41,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:34:41,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804837574] [2022-11-16 11:34:41,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:34:41,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:34:41,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:41,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:34:41,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:34:41,069 INFO L87 Difference]: Start difference. First operand 3910 states and 5326 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2022-11-16 11:34:41,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:41,298 INFO L93 Difference]: Finished difference Result 5585 states and 7561 transitions. [2022-11-16 11:34:41,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:34:41,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2022-11-16 11:34:41,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:41,305 INFO L225 Difference]: With dead ends: 5585 [2022-11-16 11:34:41,305 INFO L226 Difference]: Without dead ends: 1700 [2022-11-16 11:34:41,310 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 [2022-11-16 11:34:41,311 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 24 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 152 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 [2022-11-16 11:34:41,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 152 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:34:41,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2022-11-16 11:34:41,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1698. [2022-11-16 11:34:41,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1697 states have (on average 1.3040659988214496) internal successors, (2213), 1697 states have internal predecessors, (2213), 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) [2022-11-16 11:34:41,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2213 transitions. [2022-11-16 11:34:41,533 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2213 transitions. Word has length 66 [2022-11-16 11:34:41,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:41,533 INFO L495 AbstractCegarLoop]: Abstraction has 1698 states and 2213 transitions. [2022-11-16 11:34:41,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2022-11-16 11:34:41,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2213 transitions. [2022-11-16 11:34:41,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:34:41,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:41,535 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] [2022-11-16 11:34:41,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:34:41,535 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:41,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:41,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1052509478, now seen corresponding path program 1 times [2022-11-16 11:34:41,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:41,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759155224] [2022-11-16 11:34:41,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:41,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:41,848 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:41,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:41,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759155224] [2022-11-16 11:34:41,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759155224] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:41,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624413045] [2022-11-16 11:34:41,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:41,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:41,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:41,851 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:41,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:34:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:42,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 11:34:42,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:42,999 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:43,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:44,490 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:44,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624413045] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:44,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:34:44,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2022-11-16 11:34:44,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029085390] [2022-11-16 11:34:44,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:44,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 11:34:44,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:44,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 11:34:44,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2022-11-16 11:34:44,494 INFO L87 Difference]: Start difference. First operand 1698 states and 2213 transitions. Second operand has 29 states, 29 states have (on average 5.931034482758621) internal successors, (172), 29 states have internal predecessors, (172), 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) [2022-11-16 11:34:47,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:47,060 INFO L93 Difference]: Finished difference Result 8409 states and 10853 transitions. [2022-11-16 11:34:47,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 11:34:47,061 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.931034482758621) internal successors, (172), 29 states have internal predecessors, (172), 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 68 [2022-11-16 11:34:47,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:47,085 INFO L225 Difference]: With dead ends: 8409 [2022-11-16 11:34:47,085 INFO L226 Difference]: Without dead ends: 6955 [2022-11-16 11:34:47,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 114 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=642, Invalid=1908, Unknown=0, NotChecked=0, Total=2550 [2022-11-16 11:34:47,090 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 1098 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:47,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 1053 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:34:47,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6955 states. [2022-11-16 11:34:47,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6955 to 4339. [2022-11-16 11:34:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4339 states, 4338 states have (on average 1.2886122637159982) internal successors, (5590), 4338 states have internal predecessors, (5590), 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) [2022-11-16 11:34:47,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4339 states to 4339 states and 5590 transitions. [2022-11-16 11:34:47,765 INFO L78 Accepts]: Start accepts. Automaton has 4339 states and 5590 transitions. Word has length 68 [2022-11-16 11:34:47,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:47,766 INFO L495 AbstractCegarLoop]: Abstraction has 4339 states and 5590 transitions. [2022-11-16 11:34:47,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.931034482758621) internal successors, (172), 29 states have internal predecessors, (172), 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) [2022-11-16 11:34:47,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4339 states and 5590 transitions. [2022-11-16 11:34:47,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:34:47,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:47,768 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] [2022-11-16 11:34:47,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:47,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:47,975 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:47,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:47,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1127112472, now seen corresponding path program 1 times [2022-11-16 11:34:47,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:47,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447279370] [2022-11-16 11:34:47,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:47,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:48,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:48,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447279370] [2022-11-16 11:34:48,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447279370] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:34:48,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117645234] [2022-11-16 11:34:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:48,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:48,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:48,664 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:48,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:34:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:48,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 11:34:48,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:49,911 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:49,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:51,212 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:51,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117645234] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:51,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:34:51,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2022-11-16 11:34:51,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619881568] [2022-11-16 11:34:51,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:51,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 11:34:51,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:51,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 11:34:51,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:34:51,216 INFO L87 Difference]: Start difference. First operand 4339 states and 5590 transitions. Second operand has 28 states, 28 states have (on average 6.607142857142857) internal successors, (185), 28 states have internal predecessors, (185), 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) [2022-11-16 11:34:59,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:59,001 INFO L93 Difference]: Finished difference Result 36319 states and 46107 transitions. [2022-11-16 11:34:59,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-16 11:34:59,002 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.607142857142857) internal successors, (185), 28 states have internal predecessors, (185), 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 68 [2022-11-16 11:34:59,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:59,084 INFO L225 Difference]: With dead ends: 36319 [2022-11-16 11:34:59,084 INFO L226 Difference]: Without dead ends: 32016 [2022-11-16 11:34:59,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1498 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1100, Invalid=4012, Unknown=0, NotChecked=0, Total=5112 [2022-11-16 11:34:59,099 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 1610 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:59,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 1829 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 11:34:59,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32016 states. [2022-11-16 11:35:02,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32016 to 21737. [2022-11-16 11:35:02,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21737 states, 21736 states have (on average 1.2816065513433934) internal successors, (27857), 21736 states have internal predecessors, (27857), 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) [2022-11-16 11:35:02,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21737 states to 21737 states and 27857 transitions. [2022-11-16 11:35:02,370 INFO L78 Accepts]: Start accepts. Automaton has 21737 states and 27857 transitions. Word has length 68 [2022-11-16 11:35:02,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:02,371 INFO L495 AbstractCegarLoop]: Abstraction has 21737 states and 27857 transitions. [2022-11-16 11:35:02,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.607142857142857) internal successors, (185), 28 states have internal predecessors, (185), 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) [2022-11-16 11:35:02,372 INFO L276 IsEmpty]: Start isEmpty. Operand 21737 states and 27857 transitions. [2022-11-16 11:35:02,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:35:02,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:02,374 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] [2022-11-16 11:35:02,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:35:02,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83be5ab5-819e-49eb-820e-af7543b552b3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:35:02,580 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:35:02,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:02,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1949902756, now seen corresponding path program 1 times [2022-11-16 11:35:02,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:35:02,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964218637] [2022-11-16 11:35:02,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:02,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:35:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:02,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:35:02,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964218637] [2022-11-16 11:35:02,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964218637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:02,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:35:02,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:35:02,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563800842] [2022-11-16 11:35:02,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:02,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:35:02,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:35:02,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:35:02,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:02,636 INFO L87 Difference]: Start difference. First operand 21737 states and 27857 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2022-11-16 11:35:07,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:07,063 INFO L93 Difference]: Finished difference Result 53304 states and 68356 transitions. [2022-11-16 11:35:07,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:35:07,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2022-11-16 11:35:07,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:07,116 INFO L225 Difference]: With dead ends: 53304 [2022-11-16 11:35:07,117 INFO L226 Difference]: Without dead ends: 31759 [2022-11-16 11:35:07,139 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 [2022-11-16 11:35:07,140 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 36 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:07,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 197 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:35:07,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31759 states. [2022-11-16 11:35:10,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31759 to 24302. [2022-11-16 11:35:10,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24302 states, 24301 states have (on average 1.2722933212624994) internal successors, (30918), 24301 states have internal predecessors, (30918), 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) [2022-11-16 11:35:10,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24302 states to 24302 states and 30918 transitions. [2022-11-16 11:35:10,910 INFO L78 Accepts]: Start accepts. Automaton has 24302 states and 30918 transitions. Word has length 68 [2022-11-16 11:35:10,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:10,910 INFO L495 AbstractCegarLoop]: Abstraction has 24302 states and 30918 transitions. [2022-11-16 11:35:10,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2022-11-16 11:35:10,911 INFO L276 IsEmpty]: Start isEmpty. Operand 24302 states and 30918 transitions. [2022-11-16 11:35:10,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 11:35:10,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:10,913 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] [2022-11-16 11:35:10,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:35:10,913 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:35:10,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:10,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1333455858, now seen corresponding path program 1 times [2022-11-16 11:35:10,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:35:10,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370051125] [2022-11-16 11:35:10,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:10,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:35:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:10,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:35:10,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370051125] [2022-11-16 11:35:10,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370051125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:10,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:35:10,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:35:10,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164237020] [2022-11-16 11:35:10,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:10,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:35:10,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:35:10,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:35:10,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:10,963 INFO L87 Difference]: Start difference. First operand 24302 states and 30918 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2022-11-16 11:35:13,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:13,620 INFO L93 Difference]: Finished difference Result 30276 states and 38421 transitions. [2022-11-16 11:35:13,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:35:13,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 69 [2022-11-16 11:35:13,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:13,662 INFO L225 Difference]: With dead ends: 30276 [2022-11-16 11:35:13,662 INFO L226 Difference]: Without dead ends: 22178 [2022-11-16 11:35:13,673 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 [2022-11-16 11:35:13,674 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 41 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:13,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 180 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:35:13,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22178 states. [2022-11-16 11:35:17,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22178 to 22176. [2022-11-16 11:35:17,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22176 states, 22175 states have (on average 1.2597519729425029) internal successors, (27935), 22175 states have internal predecessors, (27935), 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) [2022-11-16 11:35:17,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22176 states to 22176 states and 27935 transitions. [2022-11-16 11:35:17,477 INFO L78 Accepts]: Start accepts. Automaton has 22176 states and 27935 transitions. Word has length 69 [2022-11-16 11:35:17,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:17,477 INFO L495 AbstractCegarLoop]: Abstraction has 22176 states and 27935 transitions. [2022-11-16 11:35:17,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2022-11-16 11:35:17,478 INFO L276 IsEmpty]: Start isEmpty. Operand 22176 states and 27935 transitions. [2022-11-16 11:35:17,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 11:35:17,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:17,480 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] [2022-11-16 11:35:17,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:35:17,480 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:35:17,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:17,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2070858514, now seen corresponding path program 1 times [2022-11-16 11:35:17,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:35:17,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265613985] [2022-11-16 11:35:17,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:17,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:35:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,540 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:17,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:35:17,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265613985] [2022-11-16 11:35:17,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265613985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:17,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:35:17,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:35:17,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586448504] [2022-11-16 11:35:17,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:17,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:35:17,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:35:17,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:35:17,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:17,545 INFO L87 Difference]: Start difference. First operand 22176 states and 27935 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2022-11-16 11:35:22,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:22,054 INFO L93 Difference]: Finished difference Result 55322 states and 69428 transitions. [2022-11-16 11:35:22,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:35:22,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 69 [2022-11-16 11:35:22,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:22,117 INFO L225 Difference]: With dead ends: 55322 [2022-11-16 11:35:22,117 INFO L226 Difference]: Without dead ends: 33986 [2022-11-16 11:35:22,136 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 [2022-11-16 11:35:22,137 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 33 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:22,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 189 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:35:22,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33986 states. [2022-11-16 11:35:27,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33986 to 33984. [2022-11-16 11:35:27,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33984 states, 33983 states have (on average 1.2306153076538269) internal successors, (41820), 33983 states have internal predecessors, (41820), 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) [2022-11-16 11:35:27,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33984 states to 33984 states and 41820 transitions. [2022-11-16 11:35:27,126 INFO L78 Accepts]: Start accepts. Automaton has 33984 states and 41820 transitions. Word has length 69 [2022-11-16 11:35:27,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:27,126 INFO L495 AbstractCegarLoop]: Abstraction has 33984 states and 41820 transitions. [2022-11-16 11:35:27,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2022-11-16 11:35:27,127 INFO L276 IsEmpty]: Start isEmpty. Operand 33984 states and 41820 transitions. [2022-11-16 11:35:27,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 11:35:27,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:27,130 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] [2022-11-16 11:35:27,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:35:27,130 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:35:27,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:27,131 INFO L85 PathProgramCache]: Analyzing trace with hash 391870310, now seen corresponding path program 1 times [2022-11-16 11:35:27,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:35:27,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065552717] [2022-11-16 11:35:27,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:27,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:35:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:27,178 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:27,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:35:27,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065552717] [2022-11-16 11:35:27,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065552717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:27,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:35:27,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:35:27,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118947635] [2022-11-16 11:35:27,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:27,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:35:27,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:35:27,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:35:27,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:27,180 INFO L87 Difference]: Start difference. First operand 33984 states and 41820 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2022-11-16 11:35:33,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:33,057 INFO L93 Difference]: Finished difference Result 70951 states and 86971 transitions. [2022-11-16 11:35:33,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:35:33,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 69 [2022-11-16 11:35:33,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:33,111 INFO L225 Difference]: With dead ends: 70951 [2022-11-16 11:35:33,111 INFO L226 Difference]: Without dead ends: 39545 [2022-11-16 11:35:33,129 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 [2022-11-16 11:35:33,130 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 36 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:33,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 172 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:35:33,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39545 states.