./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af62a9c-41ce-4044-a834-d6ecaa8cee88/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af62a9c-41ce-4044-a834-d6ecaa8cee88/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_5af62a9c-41ce-4044-a834-d6ecaa8cee88/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af62a9c-41ce-4044-a834-d6ecaa8cee88/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af62a9c-41ce-4044-a834-d6ecaa8cee88/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_5af62a9c-41ce-4044-a834-d6ecaa8cee88/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 e1221f43edcd55fb28cc2c33b3cd78828237d81c097e561fccaa486cdd56e141 --- 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 12:02:41,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:02:41,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:02:41,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:02:41,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:02:41,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:02:41,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:02:41,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:02:41,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:02:41,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:02:41,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:02:41,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:02:41,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:02:41,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:02:41,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:02:41,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:02:41,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:02:41,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:02:41,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:02:41,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:02:41,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:02:41,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:02:41,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:02:41,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:02:41,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:02:41,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:02:41,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:02:41,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:02:41,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:02:41,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:02:41,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:02:41,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:02:41,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:02:41,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:02:41,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:02:41,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:02:41,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:02:41,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:02:41,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:02:41,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:02:41,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:02:41,177 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af62a9c-41ce-4044-a834-d6ecaa8cee88/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:02:41,202 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:02:41,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:02:41,203 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:02:41,203 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:02:41,204 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:02:41,204 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:02:41,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:02:41,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:02:41,205 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:02:41,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:02:41,206 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:02:41,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:02:41,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:02:41,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:02:41,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:02:41,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:02:41,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:02:41,208 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:02:41,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:02:41,208 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:02:41,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:02:41,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:02:41,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:02:41,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:02:41,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:02:41,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:02:41,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:02:41,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:02:41,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:02:41,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:02:41,211 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:02:41,211 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:02:41,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:02:41,212 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_5af62a9c-41ce-4044-a834-d6ecaa8cee88/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af62a9c-41ce-4044-a834-d6ecaa8cee88/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1221f43edcd55fb28cc2c33b3cd78828237d81c097e561fccaa486cdd56e141 [2022-11-16 12:02:41,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:02:41,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:02:41,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:02:41,612 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:02:41,613 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:02:41,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af62a9c-41ce-4044-a834-d6ecaa8cee88/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-16 12:02:41,710 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af62a9c-41ce-4044-a834-d6ecaa8cee88/bin/uautomizer-tPACEb0tL8/data/187e4d917/1d9d3f8919654daea58d3e6ad226a147/FLAG0da8dde9d [2022-11-16 12:02:42,398 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:02:42,411 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af62a9c-41ce-4044-a834-d6ecaa8cee88/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-16 12:02:42,422 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af62a9c-41ce-4044-a834-d6ecaa8cee88/bin/uautomizer-tPACEb0tL8/data/187e4d917/1d9d3f8919654daea58d3e6ad226a147/FLAG0da8dde9d [2022-11-16 12:02:42,667 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af62a9c-41ce-4044-a834-d6ecaa8cee88/bin/uautomizer-tPACEb0tL8/data/187e4d917/1d9d3f8919654daea58d3e6ad226a147 [2022-11-16 12:02:42,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:02:42,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:02:42,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:02:42,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:02:42,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:02:42,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:02:42" (1/1) ... [2022-11-16 12:02:42,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d69357e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:42, skipping insertion in model container [2022-11-16 12:02:42,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:02:42" (1/1) ... [2022-11-16 12:02:42,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:02:42,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:02:43,108 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_5af62a9c-41ce-4044-a834-d6ecaa8cee88/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7107,7120] [2022-11-16 12:02:43,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:02:43,230 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:02:43,299 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_5af62a9c-41ce-4044-a834-d6ecaa8cee88/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7107,7120] [2022-11-16 12:02:43,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:02:43,389 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:02:43,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:43 WrapperNode [2022-11-16 12:02:43,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:02:43,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:02:43,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:02:43,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:02:43,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:43" (1/1) ... [2022-11-16 12:02:43,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:43" (1/1) ... [2022-11-16 12:02:43,465 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 636 [2022-11-16 12:02:43,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:02:43,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:02:43,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:02:43,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:02:43,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:43" (1/1) ... [2022-11-16 12:02:43,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:43" (1/1) ... [2022-11-16 12:02:43,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:43" (1/1) ... [2022-11-16 12:02:43,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:43" (1/1) ... [2022-11-16 12:02:43,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:43" (1/1) ... [2022-11-16 12:02:43,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:43" (1/1) ... [2022-11-16 12:02:43,493 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:43" (1/1) ... [2022-11-16 12:02:43,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:43" (1/1) ... [2022-11-16 12:02:43,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:02:43,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:02:43,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:02:43,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:02:43,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:43" (1/1) ... [2022-11-16 12:02:43,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:02:43,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af62a9c-41ce-4044-a834-d6ecaa8cee88/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:02:43,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af62a9c-41ce-4044-a834-d6ecaa8cee88/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:02:43,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af62a9c-41ce-4044-a834-d6ecaa8cee88/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:02:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:02:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:02:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:02:43,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:02:43,820 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:02:43,822 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:02:44,534 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:02:44,544 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:02:44,544 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:02:44,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:02:44 BoogieIcfgContainer [2022-11-16 12:02:44,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:02:44,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:02:44,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:02:44,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:02:44,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:02:42" (1/3) ... [2022-11-16 12:02:44,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ffe064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:02:44, skipping insertion in model container [2022-11-16 12:02:44,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:43" (2/3) ... [2022-11-16 12:02:44,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ffe064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:02:44, skipping insertion in model container [2022-11-16 12:02:44,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:02:44" (3/3) ... [2022-11-16 12:02:44,571 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-16 12:02:44,592 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:02:44,592 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:02:44,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:02:44,659 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;@7bd45cf3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:02:44,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:02:44,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 168 states have (on average 1.7202380952380953) internal successors, (289), 169 states have internal predecessors, (289), 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 12:02:44,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 12:02:44,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:02:44,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:02:44,702 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:02:44,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:44,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1270648051, now seen corresponding path program 1 times [2022-11-16 12:02:44,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:44,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933570379] [2022-11-16 12:02:44,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:44,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:45,534 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 12:02:45,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:45,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933570379] [2022-11-16 12:02:45,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933570379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:45,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:45,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:02:45,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379361839] [2022-11-16 12:02:45,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:45,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:02:45,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:45,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:02:45,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:02:45,605 INFO L87 Difference]: Start difference. First operand has 170 states, 168 states have (on average 1.7202380952380953) internal successors, (289), 169 states have internal predecessors, (289), 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 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 12:02:46,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:02:46,006 INFO L93 Difference]: Finished difference Result 605 states and 979 transitions. [2022-11-16 12:02:46,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:02:46,012 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 12:02:46,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:02:46,039 INFO L225 Difference]: With dead ends: 605 [2022-11-16 12:02:46,039 INFO L226 Difference]: Without dead ends: 511 [2022-11-16 12:02:46,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:02:46,050 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 1748 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:02:46,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1748 Valid, 958 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:02:46,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2022-11-16 12:02:46,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 260. [2022-11-16 12:02:46,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.5096525096525097) internal successors, (391), 259 states have internal predecessors, (391), 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 12:02:46,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 391 transitions. [2022-11-16 12:02:46,227 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 391 transitions. Word has length 63 [2022-11-16 12:02:46,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:02:46,228 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 391 transitions. [2022-11-16 12:02:46,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 12:02:46,230 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 391 transitions. [2022-11-16 12:02:46,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-16 12:02:46,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:02:46,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:02:46,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:02:46,237 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:02:46,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:46,238 INFO L85 PathProgramCache]: Analyzing trace with hash 473041692, now seen corresponding path program 1 times [2022-11-16 12:02:46,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:46,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730916650] [2022-11-16 12:02:46,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:46,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:46,664 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 12:02:46,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:46,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730916650] [2022-11-16 12:02:46,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730916650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:46,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:46,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:02:46,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038409736] [2022-11-16 12:02:46,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:46,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:02:46,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:46,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:02:46,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:02:46,673 INFO L87 Difference]: Start difference. First operand 260 states and 391 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 12:02:47,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:02:47,101 INFO L93 Difference]: Finished difference Result 968 states and 1495 transitions. [2022-11-16 12:02:47,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:02:47,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 12:02:47,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:02:47,107 INFO L225 Difference]: With dead ends: 968 [2022-11-16 12:02:47,107 INFO L226 Difference]: Without dead ends: 766 [2022-11-16 12:02:47,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:02:47,111 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 897 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:02:47,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 963 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:02:47,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-11-16 12:02:47,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 760. [2022-11-16 12:02:47,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 759 states have (on average 1.533596837944664) internal successors, (1164), 759 states have internal predecessors, (1164), 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 12:02:47,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1164 transitions. [2022-11-16 12:02:47,258 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1164 transitions. Word has length 64 [2022-11-16 12:02:47,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:02:47,259 INFO L495 AbstractCegarLoop]: Abstraction has 760 states and 1164 transitions. [2022-11-16 12:02:47,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 12:02:47,259 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1164 transitions. [2022-11-16 12:02:47,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:02:47,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:02:47,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:02:47,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:02:47,263 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:02:47,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:47,264 INFO L85 PathProgramCache]: Analyzing trace with hash -222648813, now seen corresponding path program 1 times [2022-11-16 12:02:47,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:47,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678719645] [2022-11-16 12:02:47,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:47,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:47,489 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 12:02:47,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:47,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678719645] [2022-11-16 12:02:47,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678719645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:47,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:47,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:02:47,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412088514] [2022-11-16 12:02:47,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:47,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:02:47,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:47,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:02:47,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:02:47,496 INFO L87 Difference]: Start difference. First operand 760 states and 1164 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 12:02:48,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:02:48,107 INFO L93 Difference]: Finished difference Result 2032 states and 3154 transitions. [2022-11-16 12:02:48,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:02:48,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 12:02:48,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:02:48,118 INFO L225 Difference]: With dead ends: 2032 [2022-11-16 12:02:48,118 INFO L226 Difference]: Without dead ends: 1318 [2022-11-16 12:02:48,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:02:48,132 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 944 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:02:48,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 235 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:02:48,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2022-11-16 12:02:48,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1316. [2022-11-16 12:02:48,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1315 states have (on average 1.5429657794676805) internal successors, (2029), 1315 states have internal predecessors, (2029), 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 12:02:48,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 2029 transitions. [2022-11-16 12:02:48,374 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 2029 transitions. Word has length 65 [2022-11-16 12:02:48,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:02:48,375 INFO L495 AbstractCegarLoop]: Abstraction has 1316 states and 2029 transitions. [2022-11-16 12:02:48,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 12:02:48,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 2029 transitions. [2022-11-16 12:02:48,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:02:48,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:02:48,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:02:48,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:02:48,384 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:02:48,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:48,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1106030069, now seen corresponding path program 1 times [2022-11-16 12:02:48,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:48,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502531179] [2022-11-16 12:02:48,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:48,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:48,592 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 12:02:48,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:48,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502531179] [2022-11-16 12:02:48,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502531179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:48,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:48,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:02:48,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136729146] [2022-11-16 12:02:48,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:48,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:02:48,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:48,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:02:48,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:02:48,596 INFO L87 Difference]: Start difference. First operand 1316 states and 2029 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 12:02:49,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:02:49,344 INFO L93 Difference]: Finished difference Result 3528 states and 5495 transitions. [2022-11-16 12:02:49,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:02:49,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 12:02:49,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:02:49,356 INFO L225 Difference]: With dead ends: 3528 [2022-11-16 12:02:49,356 INFO L226 Difference]: Without dead ends: 2308 [2022-11-16 12:02:49,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:02:49,371 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 870 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:02:49,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 241 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:02:49,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2308 states. [2022-11-16 12:02:49,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2308 to 2306. [2022-11-16 12:02:49,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2305 states have (on average 1.5475054229934924) internal successors, (3567), 2305 states have internal predecessors, (3567), 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 12:02:49,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 3567 transitions. [2022-11-16 12:02:49,772 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 3567 transitions. Word has length 65 [2022-11-16 12:02:49,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:02:49,772 INFO L495 AbstractCegarLoop]: Abstraction has 2306 states and 3567 transitions. [2022-11-16 12:02:49,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 12:02:49,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 3567 transitions. [2022-11-16 12:02:49,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:02:49,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:02:49,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:02:49,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:02:49,775 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:02:49,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:49,776 INFO L85 PathProgramCache]: Analyzing trace with hash 244768548, now seen corresponding path program 1 times [2022-11-16 12:02:49,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:49,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140326091] [2022-11-16 12:02:49,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:49,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:49,895 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 12:02:49,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:49,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140326091] [2022-11-16 12:02:49,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140326091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:49,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:49,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:02:49,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772847206] [2022-11-16 12:02:49,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:49,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:02:49,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:49,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:02:49,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:02:49,898 INFO L87 Difference]: Start difference. First operand 2306 states and 3567 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 12:02:50,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:02:50,850 INFO L93 Difference]: Finished difference Result 6569 states and 10218 transitions. [2022-11-16 12:02:50,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:02:50,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 12:02:50,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:02:50,870 INFO L225 Difference]: With dead ends: 6569 [2022-11-16 12:02:50,870 INFO L226 Difference]: Without dead ends: 4332 [2022-11-16 12:02:50,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:02:50,877 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 900 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:02:50,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 237 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:02:50,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2022-11-16 12:02:51,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 4330. [2022-11-16 12:02:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4330 states, 4329 states have (on average 1.5456225456225456) internal successors, (6691), 4329 states have internal predecessors, (6691), 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 12:02:51,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4330 states to 4330 states and 6691 transitions. [2022-11-16 12:02:51,570 INFO L78 Accepts]: Start accepts. Automaton has 4330 states and 6691 transitions. Word has length 65 [2022-11-16 12:02:51,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:02:51,572 INFO L495 AbstractCegarLoop]: Abstraction has 4330 states and 6691 transitions. [2022-11-16 12:02:51,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 12:02:51,576 INFO L276 IsEmpty]: Start isEmpty. Operand 4330 states and 6691 transitions. [2022-11-16 12:02:51,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 12:02:51,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:02:51,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:02:51,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:02:51,579 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:02:51,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:51,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2050472616, now seen corresponding path program 1 times [2022-11-16 12:02:51,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:51,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000540167] [2022-11-16 12:02:51,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:51,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:51,902 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 12:02:51,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:51,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000540167] [2022-11-16 12:02:51,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000540167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:51,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:51,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:02:51,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914385657] [2022-11-16 12:02:51,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:51,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:02:51,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:51,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:02:51,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:02:51,904 INFO L87 Difference]: Start difference. First operand 4330 states and 6691 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 12:02:53,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:02:53,333 INFO L93 Difference]: Finished difference Result 8380 states and 12940 transitions. [2022-11-16 12:02:53,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:02:53,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 12:02:53,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:02:53,363 INFO L225 Difference]: With dead ends: 8380 [2022-11-16 12:02:53,364 INFO L226 Difference]: Without dead ends: 8378 [2022-11-16 12:02:53,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:02:53,368 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 230 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:02:53,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 939 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:02:53,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8378 states. [2022-11-16 12:02:54,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8378 to 4458. [2022-11-16 12:02:54,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4457 states have (on average 1.5299528831052278) internal successors, (6819), 4457 states have internal predecessors, (6819), 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 12:02:54,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 6819 transitions. [2022-11-16 12:02:54,257 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 6819 transitions. Word has length 66 [2022-11-16 12:02:54,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:02:54,259 INFO L495 AbstractCegarLoop]: Abstraction has 4458 states and 6819 transitions. [2022-11-16 12:02:54,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 12:02:54,260 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 6819 transitions. [2022-11-16 12:02:54,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 12:02:54,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:02:54,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:02:54,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:02:54,262 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:02:54,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:54,263 INFO L85 PathProgramCache]: Analyzing trace with hash -598564162, now seen corresponding path program 1 times [2022-11-16 12:02:54,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:54,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543654743] [2022-11-16 12:02:54,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:54,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:54,693 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 12:02:54,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:54,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543654743] [2022-11-16 12:02:54,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543654743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:54,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:54,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:02:54,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825404887] [2022-11-16 12:02:54,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:54,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:02:54,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:54,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:02:54,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:02:54,697 INFO L87 Difference]: Start difference. First operand 4458 states and 6819 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 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 12:02:59,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:02:59,777 INFO L93 Difference]: Finished difference Result 19541 states and 29686 transitions. [2022-11-16 12:02:59,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:02:59,777 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 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 67 [2022-11-16 12:02:59,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:02:59,852 INFO L225 Difference]: With dead ends: 19541 [2022-11-16 12:02:59,852 INFO L226 Difference]: Without dead ends: 16827 [2022-11-16 12:02:59,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:02:59,862 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 2075 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2075 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:02:59,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2075 Valid, 1096 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 12:02:59,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16827 states. [2022-11-16 12:03:01,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16827 to 4553. [2022-11-16 12:03:01,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4553 states, 4552 states have (on average 1.5259226713532512) internal successors, (6946), 4552 states have internal predecessors, (6946), 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 12:03:01,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 6946 transitions. [2022-11-16 12:03:01,315 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 6946 transitions. Word has length 67 [2022-11-16 12:03:01,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:01,315 INFO L495 AbstractCegarLoop]: Abstraction has 4553 states and 6946 transitions. [2022-11-16 12:03:01,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 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 12:03:01,316 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 6946 transitions. [2022-11-16 12:03:01,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 12:03:01,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:01,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:01,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:03:01,319 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:01,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:01,319 INFO L85 PathProgramCache]: Analyzing trace with hash -354598274, now seen corresponding path program 1 times [2022-11-16 12:03:01,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:01,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030849856] [2022-11-16 12:03:01,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:01,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:01,729 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 12:03:01,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:01,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030849856] [2022-11-16 12:03:01,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030849856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:01,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:01,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:03:01,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872563201] [2022-11-16 12:03:01,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:01,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:03:01,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:01,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:03:01,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:03:01,732 INFO L87 Difference]: Start difference. First operand 4553 states and 6946 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 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 12:03:05,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:05,655 INFO L93 Difference]: Finished difference Result 12008 states and 18213 transitions. [2022-11-16 12:03:05,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:03:05,656 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 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 67 [2022-11-16 12:03:05,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:05,687 INFO L225 Difference]: With dead ends: 12008 [2022-11-16 12:03:05,687 INFO L226 Difference]: Without dead ends: 11349 [2022-11-16 12:03:05,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:03:05,693 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 1927 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1927 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:05,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1927 Valid, 1252 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 12:03:05,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11349 states. [2022-11-16 12:03:06,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11349 to 4553. [2022-11-16 12:03:06,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4553 states, 4552 states have (on average 1.5254833040421794) internal successors, (6944), 4552 states have internal predecessors, (6944), 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 12:03:06,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 6944 transitions. [2022-11-16 12:03:06,676 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 6944 transitions. Word has length 67 [2022-11-16 12:03:06,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:06,677 INFO L495 AbstractCegarLoop]: Abstraction has 4553 states and 6944 transitions. [2022-11-16 12:03:06,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 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 12:03:06,677 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 6944 transitions. [2022-11-16 12:03:06,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 12:03:06,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:06,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:06,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:03:06,682 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:06,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:06,683 INFO L85 PathProgramCache]: Analyzing trace with hash 878399134, now seen corresponding path program 1 times [2022-11-16 12:03:06,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:06,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260083484] [2022-11-16 12:03:06,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:06,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:07,211 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 12:03:07,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:07,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260083484] [2022-11-16 12:03:07,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260083484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:07,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:07,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:03:07,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358855067] [2022-11-16 12:03:07,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:07,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:03:07,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:07,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:03:07,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:03:07,216 INFO L87 Difference]: Start difference. First operand 4553 states and 6944 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 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 12:03:11,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:11,617 INFO L93 Difference]: Finished difference Result 15862 states and 24064 transitions. [2022-11-16 12:03:11,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:03:11,618 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 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 67 [2022-11-16 12:03:11,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:11,651 INFO L225 Difference]: With dead ends: 15862 [2022-11-16 12:03:11,651 INFO L226 Difference]: Without dead ends: 14192 [2022-11-16 12:03:11,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:03:11,659 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 2115 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2115 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:11,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2115 Valid, 1200 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 12:03:11,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14192 states. [2022-11-16 12:03:12,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14192 to 4694. [2022-11-16 12:03:12,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4694 states, 4693 states have (on average 1.5201363733219688) internal successors, (7134), 4693 states have internal predecessors, (7134), 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 12:03:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 7134 transitions. [2022-11-16 12:03:12,744 INFO L78 Accepts]: Start accepts. Automaton has 4694 states and 7134 transitions. Word has length 67 [2022-11-16 12:03:12,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:12,745 INFO L495 AbstractCegarLoop]: Abstraction has 4694 states and 7134 transitions. [2022-11-16 12:03:12,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 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 12:03:12,745 INFO L276 IsEmpty]: Start isEmpty. Operand 4694 states and 7134 transitions. [2022-11-16 12:03:12,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 12:03:12,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:12,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:12,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:03:12,747 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:12,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:12,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1495323364, now seen corresponding path program 1 times [2022-11-16 12:03:12,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:12,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109180433] [2022-11-16 12:03:12,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:12,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:12,886 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 12:03:12,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:12,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109180433] [2022-11-16 12:03:12,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109180433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:12,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:12,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:03:12,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977087413] [2022-11-16 12:03:12,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:12,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:03:12,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:12,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:03:12,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:03:12,890 INFO L87 Difference]: Start difference. First operand 4694 states and 7134 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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 12:03:14,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:14,843 INFO L93 Difference]: Finished difference Result 12742 states and 19425 transitions. [2022-11-16 12:03:14,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:03:14,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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 67 [2022-11-16 12:03:14,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:14,859 INFO L225 Difference]: With dead ends: 12742 [2022-11-16 12:03:14,860 INFO L226 Difference]: Without dead ends: 8096 [2022-11-16 12:03:14,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:03:14,868 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 961 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:14,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 240 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:03:14,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8096 states. [2022-11-16 12:03:16,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8096 to 8094. [2022-11-16 12:03:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8094 states, 8093 states have (on average 1.517237118497467) internal successors, (12279), 8093 states have internal predecessors, (12279), 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 12:03:17,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8094 states to 8094 states and 12279 transitions. [2022-11-16 12:03:17,001 INFO L78 Accepts]: Start accepts. Automaton has 8094 states and 12279 transitions. Word has length 67 [2022-11-16 12:03:17,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:17,001 INFO L495 AbstractCegarLoop]: Abstraction has 8094 states and 12279 transitions. [2022-11-16 12:03:17,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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 12:03:17,002 INFO L276 IsEmpty]: Start isEmpty. Operand 8094 states and 12279 transitions. [2022-11-16 12:03:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 12:03:17,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:17,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:17,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:03:17,006 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:17,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:17,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1249029969, now seen corresponding path program 1 times [2022-11-16 12:03:17,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:17,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285054765] [2022-11-16 12:03:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:17,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:17,176 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 12:03:17,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:17,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285054765] [2022-11-16 12:03:17,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285054765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:17,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:17,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:03:17,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490396415] [2022-11-16 12:03:17,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:17,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:03:17,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:17,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:03:17,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:03:17,179 INFO L87 Difference]: Start difference. First operand 8094 states and 12279 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 12:03:19,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:19,761 INFO L93 Difference]: Finished difference Result 21234 states and 32297 transitions. [2022-11-16 12:03:19,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:03:19,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 12:03:19,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:19,778 INFO L225 Difference]: With dead ends: 21234 [2022-11-16 12:03:19,778 INFO L226 Difference]: Without dead ends: 14064 [2022-11-16 12:03:19,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:03:19,789 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 158 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:19,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 571 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:03:19,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14064 states. [2022-11-16 12:03:22,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14064 to 13958. [2022-11-16 12:03:22,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13958 states, 13957 states have (on average 1.5034033101669413) internal successors, (20983), 13957 states have internal predecessors, (20983), 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 12:03:22,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13958 states to 13958 states and 20983 transitions. [2022-11-16 12:03:22,788 INFO L78 Accepts]: Start accepts. Automaton has 13958 states and 20983 transitions. Word has length 68 [2022-11-16 12:03:22,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:22,788 INFO L495 AbstractCegarLoop]: Abstraction has 13958 states and 20983 transitions. [2022-11-16 12:03:22,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 12:03:22,789 INFO L276 IsEmpty]: Start isEmpty. Operand 13958 states and 20983 transitions. [2022-11-16 12:03:22,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 12:03:22,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:22,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:22,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:03:22,792 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:22,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:22,792 INFO L85 PathProgramCache]: Analyzing trace with hash -264834943, now seen corresponding path program 1 times [2022-11-16 12:03:22,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:22,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742572033] [2022-11-16 12:03:22,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:22,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:22,862 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 12:03:22,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:22,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742572033] [2022-11-16 12:03:22,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742572033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:22,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:22,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:03:22,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054744559] [2022-11-16 12:03:22,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:22,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:03:22,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:22,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:03:22,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:03:22,865 INFO L87 Difference]: Start difference. First operand 13958 states and 20983 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 12:03:27,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:27,140 INFO L93 Difference]: Finished difference Result 25362 states and 38160 transitions. [2022-11-16 12:03:27,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:03:27,140 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 12:03:27,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:27,174 INFO L225 Difference]: With dead ends: 25362 [2022-11-16 12:03:27,174 INFO L226 Difference]: Without dead ends: 17036 [2022-11-16 12:03:27,183 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 12:03:27,184 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 148 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:27,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 454 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:03:27,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17036 states. [2022-11-16 12:03:30,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17036 to 16818. [2022-11-16 12:03:30,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16818 states, 16817 states have (on average 1.4811202949396445) internal successors, (24908), 16817 states have internal predecessors, (24908), 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 12:03:30,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16818 states to 16818 states and 24908 transitions. [2022-11-16 12:03:30,917 INFO L78 Accepts]: Start accepts. Automaton has 16818 states and 24908 transitions. Word has length 68 [2022-11-16 12:03:30,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:30,918 INFO L495 AbstractCegarLoop]: Abstraction has 16818 states and 24908 transitions. [2022-11-16 12:03:30,918 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 12:03:30,918 INFO L276 IsEmpty]: Start isEmpty. Operand 16818 states and 24908 transitions. [2022-11-16 12:03:30,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 12:03:30,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:30,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:30,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:03:30,923 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:30,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:30,924 INFO L85 PathProgramCache]: Analyzing trace with hash -660438559, now seen corresponding path program 1 times [2022-11-16 12:03:30,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:30,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701008875] [2022-11-16 12:03:30,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:30,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:30,993 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 12:03:30,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:30,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701008875] [2022-11-16 12:03:30,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701008875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:30,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:30,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:03:30,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401231932] [2022-11-16 12:03:30,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:30,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:03:30,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:30,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:03:30,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:03:30,996 INFO L87 Difference]: Start difference. First operand 16818 states and 24908 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 12:03:36,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:36,264 INFO L93 Difference]: Finished difference Result 37671 states and 55842 transitions. [2022-11-16 12:03:36,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:03:36,265 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 12:03:36,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:36,297 INFO L225 Difference]: With dead ends: 37671 [2022-11-16 12:03:36,297 INFO L226 Difference]: Without dead ends: 23115 [2022-11-16 12:03:36,308 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 12:03:36,309 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 163 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:36,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 452 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:03:36,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23115 states. [2022-11-16 12:03:40,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23115 to 16687. [2022-11-16 12:03:40,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16687 states, 16686 states have (on average 1.4625434495984657) internal successors, (24404), 16686 states have internal predecessors, (24404), 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 12:03:40,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16687 states to 16687 states and 24404 transitions. [2022-11-16 12:03:40,248 INFO L78 Accepts]: Start accepts. Automaton has 16687 states and 24404 transitions. Word has length 68 [2022-11-16 12:03:40,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:40,248 INFO L495 AbstractCegarLoop]: Abstraction has 16687 states and 24404 transitions. [2022-11-16 12:03:40,249 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 12:03:40,249 INFO L276 IsEmpty]: Start isEmpty. Operand 16687 states and 24404 transitions. [2022-11-16 12:03:40,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 12:03:40,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:40,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:40,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:03:40,254 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:40,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:40,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1777284032, now seen corresponding path program 1 times [2022-11-16 12:03:40,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:40,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840332100] [2022-11-16 12:03:40,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:40,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:40,327 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 12:03:40,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:40,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840332100] [2022-11-16 12:03:40,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840332100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:40,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:40,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:03:40,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944003926] [2022-11-16 12:03:40,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:40,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:03:40,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:40,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:03:40,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:03:40,331 INFO L87 Difference]: Start difference. First operand 16687 states and 24404 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 12:03:44,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:44,351 INFO L93 Difference]: Finished difference Result 22883 states and 33321 transitions. [2022-11-16 12:03:44,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:03:44,352 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 12:03:44,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:44,374 INFO L225 Difference]: With dead ends: 22883 [2022-11-16 12:03:44,375 INFO L226 Difference]: Without dead ends: 17041 [2022-11-16 12:03:44,383 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 12:03:44,383 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 135 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:44,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 436 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:03:44,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17041 states. [2022-11-16 12:03:48,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17041 to 15375. [2022-11-16 12:03:48,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15375 states, 15374 states have (on average 1.432548458436321) internal successors, (22024), 15374 states have internal predecessors, (22024), 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 12:03:48,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15375 states to 15375 states and 22024 transitions. [2022-11-16 12:03:48,110 INFO L78 Accepts]: Start accepts. Automaton has 15375 states and 22024 transitions. Word has length 68 [2022-11-16 12:03:48,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:03:48,110 INFO L495 AbstractCegarLoop]: Abstraction has 15375 states and 22024 transitions. [2022-11-16 12:03:48,111 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 12:03:48,111 INFO L276 IsEmpty]: Start isEmpty. Operand 15375 states and 22024 transitions. [2022-11-16 12:03:48,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 12:03:48,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:03:48,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:03:48,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:03:48,115 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:03:48,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:03:48,116 INFO L85 PathProgramCache]: Analyzing trace with hash -450188991, now seen corresponding path program 1 times [2022-11-16 12:03:48,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:03:48,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17587363] [2022-11-16 12:03:48,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:03:48,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:03:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:03:48,253 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 12:03:48,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:48,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17587363] [2022-11-16 12:03:48,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17587363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:03:48,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:03:48,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:03:48,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972133978] [2022-11-16 12:03:48,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:03:48,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:03:48,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:48,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:03:48,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:03:48,256 INFO L87 Difference]: Start difference. First operand 15375 states and 22024 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:54,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:03:54,869 INFO L93 Difference]: Finished difference Result 32728 states and 47289 transitions. [2022-11-16 12:03:54,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:03:54,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-16 12:03:54,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:03:54,903 INFO L225 Difference]: With dead ends: 32728 [2022-11-16 12:03:54,903 INFO L226 Difference]: Without dead ends: 26334 [2022-11-16 12:03:54,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:03:54,912 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1033 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:03:54,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 1070 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:03:54,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26334 states. [2022-11-16 12:04:00,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26334 to 21734. [2022-11-16 12:04:00,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21734 states, 21733 states have (on average 1.4334882436847192) internal successors, (31154), 21733 states have internal predecessors, (31154), 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 12:04:00,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21734 states to 21734 states and 31154 transitions. [2022-11-16 12:04:00,595 INFO L78 Accepts]: Start accepts. Automaton has 21734 states and 31154 transitions. Word has length 69 [2022-11-16 12:04:00,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:00,595 INFO L495 AbstractCegarLoop]: Abstraction has 21734 states and 31154 transitions. [2022-11-16 12:04:00,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:00,595 INFO L276 IsEmpty]: Start isEmpty. Operand 21734 states and 31154 transitions. [2022-11-16 12:04:00,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 12:04:00,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:00,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:00,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:04:00,599 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:00,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:00,600 INFO L85 PathProgramCache]: Analyzing trace with hash 558054915, now seen corresponding path program 1 times [2022-11-16 12:04:00,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:00,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557897184] [2022-11-16 12:04:00,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:00,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:00,747 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 12:04:00,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:00,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557897184] [2022-11-16 12:04:00,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557897184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:00,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:00,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:04:00,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674624883] [2022-11-16 12:04:00,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:00,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:04:00,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:00,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:04:00,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:04:00,751 INFO L87 Difference]: Start difference. First operand 21734 states and 31154 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:08,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:08,148 INFO L93 Difference]: Finished difference Result 30900 states and 44495 transitions. [2022-11-16 12:04:08,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:04:08,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-16 12:04:08,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:08,193 INFO L225 Difference]: With dead ends: 30900 [2022-11-16 12:04:08,193 INFO L226 Difference]: Without dead ends: 29482 [2022-11-16 12:04:08,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:04:08,198 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 1052 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:08,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 1107 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:04:08,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29482 states. [2022-11-16 12:04:13,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29482 to 23136. [2022-11-16 12:04:13,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23136 states, 23135 states have (on average 1.4337583747568619) internal successors, (33170), 23135 states have internal predecessors, (33170), 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 12:04:13,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23136 states to 23136 states and 33170 transitions. [2022-11-16 12:04:13,765 INFO L78 Accepts]: Start accepts. Automaton has 23136 states and 33170 transitions. Word has length 69 [2022-11-16 12:04:13,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:13,765 INFO L495 AbstractCegarLoop]: Abstraction has 23136 states and 33170 transitions. [2022-11-16 12:04:13,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:13,765 INFO L276 IsEmpty]: Start isEmpty. Operand 23136 states and 33170 transitions. [2022-11-16 12:04:13,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 12:04:13,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:13,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:13,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:04:13,770 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:13,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:13,770 INFO L85 PathProgramCache]: Analyzing trace with hash 362024722, now seen corresponding path program 1 times [2022-11-16 12:04:13,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:13,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840513563] [2022-11-16 12:04:13,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:13,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:13,885 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 12:04:13,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:13,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840513563] [2022-11-16 12:04:13,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840513563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:13,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:13,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:04:13,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895890675] [2022-11-16 12:04:13,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:13,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:04:13,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:13,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:04:13,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:04:13,888 INFO L87 Difference]: Start difference. First operand 23136 states and 33170 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:21,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:21,700 INFO L93 Difference]: Finished difference Result 33992 states and 48977 transitions. [2022-11-16 12:04:21,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:04:21,701 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-16 12:04:21,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:21,746 INFO L225 Difference]: With dead ends: 33992 [2022-11-16 12:04:21,746 INFO L226 Difference]: Without dead ends: 30846 [2022-11-16 12:04:21,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:04:21,755 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 963 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:21,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 1284 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:04:21,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30846 states. [2022-11-16 12:04:28,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30846 to 26261. [2022-11-16 12:04:28,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26261 states, 26260 states have (on average 1.4340822543792842) internal successors, (37659), 26260 states have internal predecessors, (37659), 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 12:04:28,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26261 states to 26261 states and 37659 transitions. [2022-11-16 12:04:28,508 INFO L78 Accepts]: Start accepts. Automaton has 26261 states and 37659 transitions. Word has length 69 [2022-11-16 12:04:28,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:28,508 INFO L495 AbstractCegarLoop]: Abstraction has 26261 states and 37659 transitions. [2022-11-16 12:04:28,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:28,509 INFO L276 IsEmpty]: Start isEmpty. Operand 26261 states and 37659 transitions. [2022-11-16 12:04:28,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 12:04:28,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:28,512 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:28,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:04:28,512 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:28,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:28,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1608289607, now seen corresponding path program 1 times [2022-11-16 12:04:28,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:28,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292117923] [2022-11-16 12:04:28,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:28,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:28,626 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 12:04:28,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:28,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292117923] [2022-11-16 12:04:28,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292117923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:28,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:28,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:04:28,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615323299] [2022-11-16 12:04:28,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:28,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:04:28,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:28,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:04:28,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:04:28,629 INFO L87 Difference]: Start difference. First operand 26261 states and 37659 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:38,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:38,115 INFO L93 Difference]: Finished difference Result 44439 states and 64123 transitions. [2022-11-16 12:04:38,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:04:38,116 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-16 12:04:38,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:38,171 INFO L225 Difference]: With dead ends: 44439 [2022-11-16 12:04:38,171 INFO L226 Difference]: Without dead ends: 37189 [2022-11-16 12:04:38,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:04:38,182 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1038 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:38,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 1247 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:04:38,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37189 states. [2022-11-16 12:04:46,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37189 to 31796. [2022-11-16 12:04:46,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31796 states, 31795 states have (on average 1.434596634690989) internal successors, (45613), 31795 states have internal predecessors, (45613), 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 12:04:46,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31796 states to 31796 states and 45613 transitions. [2022-11-16 12:04:46,297 INFO L78 Accepts]: Start accepts. Automaton has 31796 states and 45613 transitions. Word has length 69 [2022-11-16 12:04:46,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:04:46,297 INFO L495 AbstractCegarLoop]: Abstraction has 31796 states and 45613 transitions. [2022-11-16 12:04:46,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:04:46,297 INFO L276 IsEmpty]: Start isEmpty. Operand 31796 states and 45613 transitions. [2022-11-16 12:04:46,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 12:04:46,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:04:46,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:46,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:04:46,302 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:04:46,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:46,302 INFO L85 PathProgramCache]: Analyzing trace with hash 534789540, now seen corresponding path program 1 times [2022-11-16 12:04:46,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:46,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277116574] [2022-11-16 12:04:46,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:46,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:46,359 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 12:04:46,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:46,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277116574] [2022-11-16 12:04:46,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277116574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:46,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:46,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:04:46,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274499792] [2022-11-16 12:04:46,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:46,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:04:46,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:46,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:04:46,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:04:46,363 INFO L87 Difference]: Start difference. First operand 31796 states and 45613 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 12:04:56,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:04:56,033 INFO L93 Difference]: Finished difference Result 64005 states and 91471 transitions. [2022-11-16 12:04:56,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:04:56,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2022-11-16 12:04:56,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:04:56,082 INFO L225 Difference]: With dead ends: 64005 [2022-11-16 12:04:56,082 INFO L226 Difference]: Without dead ends: 34689 [2022-11-16 12:04:56,103 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 12:04:56,104 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 150 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:04:56,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 522 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:04:56,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34689 states. [2022-11-16 12:05:05,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34689 to 31691. [2022-11-16 12:05:05,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31691 states, 31690 states have (on average 1.3971284316819186) internal successors, (44275), 31690 states have internal predecessors, (44275), 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 12:05:05,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31691 states to 31691 states and 44275 transitions. [2022-11-16 12:05:05,313 INFO L78 Accepts]: Start accepts. Automaton has 31691 states and 44275 transitions. Word has length 72 [2022-11-16 12:05:05,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:05:05,313 INFO L495 AbstractCegarLoop]: Abstraction has 31691 states and 44275 transitions. [2022-11-16 12:05:05,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 12:05:05,314 INFO L276 IsEmpty]: Start isEmpty. Operand 31691 states and 44275 transitions. [2022-11-16 12:05:05,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-16 12:05:05,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:05:05,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:05,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:05:05,319 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:05:05,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:05,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1186485623, now seen corresponding path program 1 times [2022-11-16 12:05:05,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:05,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520824484] [2022-11-16 12:05:05,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:05,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:05,436 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 12:05:05,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:05,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520824484] [2022-11-16 12:05:05,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520824484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:05,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:05,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:05:05,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908578056] [2022-11-16 12:05:05,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:05,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:05:05,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:05,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:05:05,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:05:05,439 INFO L87 Difference]: Start difference. First operand 31691 states and 44275 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 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)