./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a169a35b-5068-43de-aa5a-8b24412ec269/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a169a35b-5068-43de-aa5a-8b24412ec269/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_a169a35b-5068-43de-aa5a-8b24412ec269/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a169a35b-5068-43de-aa5a-8b24412ec269/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a169a35b-5068-43de-aa5a-8b24412ec269/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_a169a35b-5068-43de-aa5a-8b24412ec269/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 883ae562acbdc0ddaf57b9acda91c94407da87efc745325e9971c16b2e3730c3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:40:43,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:40:43,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:40:43,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:40:43,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:40:43,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:40:43,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:40:43,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:40:43,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:40:43,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:40:43,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:40:43,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:40:43,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:40:43,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:40:43,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:40:43,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:40:43,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:40:43,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:40:43,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:40:43,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:40:43,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:40:43,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:40:43,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:40:43,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:40:43,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:40:43,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:40:43,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:40:43,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:40:43,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:40:43,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:40:43,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:40:43,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:40:43,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:40:43,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:40:43,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:40:43,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:40:43,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:40:43,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:40:43,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:40:43,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:40:43,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:40:43,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a169a35b-5068-43de-aa5a-8b24412ec269/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:40:43,421 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:40:43,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:40:43,422 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:40:43,422 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:40:43,426 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:40:43,427 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:40:43,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:40:43,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:40:43,428 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:40:43,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:40:43,429 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:40:43,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:40:43,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:40:43,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:40:43,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:40:43,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:40:43,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:40:43,430 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:40:43,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:40:43,431 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:40:43,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:40:43,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:40:43,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:40:43,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:40:43,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:40:43,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:40:43,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:40:43,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:40:43,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:40:43,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:40:43,433 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:40:43,433 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:40:43,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:40:43,434 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_a169a35b-5068-43de-aa5a-8b24412ec269/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a169a35b-5068-43de-aa5a-8b24412ec269/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 883ae562acbdc0ddaf57b9acda91c94407da87efc745325e9971c16b2e3730c3 [2022-11-16 11:40:43,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:40:43,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:40:43,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:40:43,750 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:40:43,752 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:40:43,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a169a35b-5068-43de-aa5a-8b24412ec269/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-16 11:40:43,829 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a169a35b-5068-43de-aa5a-8b24412ec269/bin/uautomizer-tPACEb0tL8/data/0b6ed52ef/bb400d5da5d648439c0d99465319de27/FLAGf695f0ec2 [2022-11-16 11:40:44,423 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:40:44,426 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a169a35b-5068-43de-aa5a-8b24412ec269/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-16 11:40:44,440 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a169a35b-5068-43de-aa5a-8b24412ec269/bin/uautomizer-tPACEb0tL8/data/0b6ed52ef/bb400d5da5d648439c0d99465319de27/FLAGf695f0ec2 [2022-11-16 11:40:44,717 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a169a35b-5068-43de-aa5a-8b24412ec269/bin/uautomizer-tPACEb0tL8/data/0b6ed52ef/bb400d5da5d648439c0d99465319de27 [2022-11-16 11:40:44,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:40:44,721 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:40:44,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:40:44,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:40:44,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:40:44,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:40:44" (1/1) ... [2022-11-16 11:40:44,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e44362b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:44, skipping insertion in model container [2022-11-16 11:40:44,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:40:44" (1/1) ... [2022-11-16 11:40:44,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:40:44,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:40:45,082 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_a169a35b-5068-43de-aa5a-8b24412ec269/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7165,7178] [2022-11-16 11:40:45,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:40:45,133 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:40:45,214 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_a169a35b-5068-43de-aa5a-8b24412ec269/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7165,7178] [2022-11-16 11:40:45,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:40:45,256 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:40:45,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:45 WrapperNode [2022-11-16 11:40:45,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:40:45,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:40:45,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:40:45,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:40:45,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:45" (1/1) ... [2022-11-16 11:40:45,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:45" (1/1) ... [2022-11-16 11:40:45,309 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 556 [2022-11-16 11:40:45,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:40:45,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:40:45,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:40:45,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:40:45,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:45" (1/1) ... [2022-11-16 11:40:45,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:45" (1/1) ... [2022-11-16 11:40:45,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:45" (1/1) ... [2022-11-16 11:40:45,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:45" (1/1) ... [2022-11-16 11:40:45,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:45" (1/1) ... [2022-11-16 11:40:45,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:45" (1/1) ... [2022-11-16 11:40:45,353 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:45" (1/1) ... [2022-11-16 11:40:45,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:45" (1/1) ... [2022-11-16 11:40:45,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:40:45,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:40:45,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:40:45,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:40:45,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:45" (1/1) ... [2022-11-16 11:40:45,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:40:45,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a169a35b-5068-43de-aa5a-8b24412ec269/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:45,404 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a169a35b-5068-43de-aa5a-8b24412ec269/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:40:45,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a169a35b-5068-43de-aa5a-8b24412ec269/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:40:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:40:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:40:45,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:40:45,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:40:45,648 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:40:45,660 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:40:46,290 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:40:46,328 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:40:46,328 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:40:46,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:40:46 BoogieIcfgContainer [2022-11-16 11:40:46,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:40:46,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:40:46,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:40:46,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:40:46,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:40:44" (1/3) ... [2022-11-16 11:40:46,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c672649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:40:46, skipping insertion in model container [2022-11-16 11:40:46,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:45" (2/3) ... [2022-11-16 11:40:46,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c672649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:40:46, skipping insertion in model container [2022-11-16 11:40:46,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:40:46" (3/3) ... [2022-11-16 11:40:46,348 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-16 11:40:46,368 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:40:46,368 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:40:46,442 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:40:46,449 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;@43db8215, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:40:46,449 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:40:46,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.710344827586207) internal successors, (248), 146 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:46,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 11:40:46,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:46,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:46,464 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:46,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:46,470 INFO L85 PathProgramCache]: Analyzing trace with hash -235222256, now seen corresponding path program 1 times [2022-11-16 11:40:46,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:46,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196090120] [2022-11-16 11:40:46,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:46,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:46,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:46,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:46,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196090120] [2022-11-16 11:40:46,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196090120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:46,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:46,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:40:46,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176239262] [2022-11-16 11:40:46,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:47,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:40:47,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:47,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:40:47,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:40:47,060 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.710344827586207) internal successors, (248), 146 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:47,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:47,354 INFO L93 Difference]: Finished difference Result 467 states and 755 transitions. [2022-11-16 11:40:47,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:40:47,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-11-16 11:40:47,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:47,381 INFO L225 Difference]: With dead ends: 467 [2022-11-16 11:40:47,382 INFO L226 Difference]: Without dead ends: 393 [2022-11-16 11:40:47,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:40:47,393 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 824 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:47,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 865 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:40:47,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-16 11:40:47,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 231. [2022-11-16 11:40:47,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.508695652173913) internal successors, (347), 230 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:47,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 347 transitions. [2022-11-16 11:40:47,467 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 347 transitions. Word has length 48 [2022-11-16 11:40:47,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:47,468 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 347 transitions. [2022-11-16 11:40:47,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:47,469 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 347 transitions. [2022-11-16 11:40:47,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 11:40:47,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:47,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:47,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:40:47,472 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:47,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:47,473 INFO L85 PathProgramCache]: Analyzing trace with hash 407331856, now seen corresponding path program 1 times [2022-11-16 11:40:47,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:47,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377745514] [2022-11-16 11:40:47,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:47,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:47,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:47,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:47,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377745514] [2022-11-16 11:40:47,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377745514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:47,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:47,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:40:47,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893436554] [2022-11-16 11:40:47,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:47,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:40:47,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:47,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:40:47,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:40:47,615 INFO L87 Difference]: Start difference. First operand 231 states and 347 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:47,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:47,690 INFO L93 Difference]: Finished difference Result 569 states and 875 transitions. [2022-11-16 11:40:47,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:40:47,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-16 11:40:47,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:47,693 INFO L225 Difference]: With dead ends: 569 [2022-11-16 11:40:47,694 INFO L226 Difference]: Without dead ends: 401 [2022-11-16 11:40:47,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:40:47,696 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 143 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 392 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 11:40:47,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 392 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:40:47,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-11-16 11:40:47,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 399. [2022-11-16 11:40:47,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.5125628140703518) internal successors, (602), 398 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:47,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 602 transitions. [2022-11-16 11:40:47,772 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 602 transitions. Word has length 51 [2022-11-16 11:40:47,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:47,774 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 602 transitions. [2022-11-16 11:40:47,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:47,774 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 602 transitions. [2022-11-16 11:40:47,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 11:40:47,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:47,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:47,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:40:47,787 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:47,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:47,790 INFO L85 PathProgramCache]: Analyzing trace with hash 738781713, now seen corresponding path program 1 times [2022-11-16 11:40:47,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:47,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361458096] [2022-11-16 11:40:47,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:47,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:47,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:47,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361458096] [2022-11-16 11:40:47,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361458096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:47,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:47,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:40:47,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073865281] [2022-11-16 11:40:47,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:47,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:40:47,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:47,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:40:47,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:40:47,929 INFO L87 Difference]: Start difference. First operand 399 states and 602 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:48,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:48,040 INFO L93 Difference]: Finished difference Result 979 states and 1498 transitions. [2022-11-16 11:40:48,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:40:48,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-16 11:40:48,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:48,044 INFO L225 Difference]: With dead ends: 979 [2022-11-16 11:40:48,044 INFO L226 Difference]: Without dead ends: 691 [2022-11-16 11:40:48,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:40:48,055 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 130 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 392 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 11:40:48,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 392 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:40:48,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-11-16 11:40:48,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 689. [2022-11-16 11:40:48,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 1.502906976744186) internal successors, (1034), 688 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:48,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1034 transitions. [2022-11-16 11:40:48,142 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1034 transitions. Word has length 51 [2022-11-16 11:40:48,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:48,145 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 1034 transitions. [2022-11-16 11:40:48,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:48,145 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1034 transitions. [2022-11-16 11:40:48,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 11:40:48,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:48,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:48,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:40:48,150 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:48,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:48,153 INFO L85 PathProgramCache]: Analyzing trace with hash -865520847, now seen corresponding path program 1 times [2022-11-16 11:40:48,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:48,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343640550] [2022-11-16 11:40:48,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:48,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:48,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:48,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343640550] [2022-11-16 11:40:48,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343640550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:48,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:48,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:40:48,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97266224] [2022-11-16 11:40:48,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:48,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:40:48,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:48,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:40:48,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:40:48,275 INFO L87 Difference]: Start difference. First operand 689 states and 1034 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:48,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:48,424 INFO L93 Difference]: Finished difference Result 1811 states and 2729 transitions. [2022-11-16 11:40:48,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:40:48,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-16 11:40:48,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:48,429 INFO L225 Difference]: With dead ends: 1811 [2022-11-16 11:40:48,430 INFO L226 Difference]: Without dead ends: 1209 [2022-11-16 11:40:48,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:40:48,432 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 139 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:48,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 400 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:40:48,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2022-11-16 11:40:48,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1207. [2022-11-16 11:40:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1206 states have (on average 1.466832504145937) internal successors, (1769), 1206 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:48,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1769 transitions. [2022-11-16 11:40:48,571 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1769 transitions. Word has length 51 [2022-11-16 11:40:48,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:48,572 INFO L495 AbstractCegarLoop]: Abstraction has 1207 states and 1769 transitions. [2022-11-16 11:40:48,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:48,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1769 transitions. [2022-11-16 11:40:48,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-16 11:40:48,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:48,573 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] [2022-11-16 11:40:48,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:40:48,574 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:48,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:48,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1376619607, now seen corresponding path program 1 times [2022-11-16 11:40:48,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:48,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193164808] [2022-11-16 11:40:48,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:48,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:48,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:48,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193164808] [2022-11-16 11:40:48,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193164808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:48,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:48,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:40:48,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772117415] [2022-11-16 11:40:48,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:48,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:40:48,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:48,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:40:48,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:40:48,686 INFO L87 Difference]: Start difference. First operand 1207 states and 1769 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:48,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:48,988 INFO L93 Difference]: Finished difference Result 2347 states and 3506 transitions. [2022-11-16 11:40:48,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:40:48,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-11-16 11:40:48,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:48,999 INFO L225 Difference]: With dead ends: 2347 [2022-11-16 11:40:48,999 INFO L226 Difference]: Without dead ends: 2001 [2022-11-16 11:40:49,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:40:49,002 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 563 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:49,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 894 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:40:49,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2001 states. [2022-11-16 11:40:49,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2001 to 1611. [2022-11-16 11:40:49,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1611 states, 1610 states have (on average 1.4745341614906833) internal successors, (2374), 1610 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:49,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 2374 transitions. [2022-11-16 11:40:49,244 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 2374 transitions. Word has length 52 [2022-11-16 11:40:49,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:49,245 INFO L495 AbstractCegarLoop]: Abstraction has 1611 states and 2374 transitions. [2022-11-16 11:40:49,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:49,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 2374 transitions. [2022-11-16 11:40:49,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-16 11:40:49,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:49,249 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] [2022-11-16 11:40:49,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:40:49,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:49,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:49,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1542318405, now seen corresponding path program 1 times [2022-11-16 11:40:49,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:49,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169756599] [2022-11-16 11:40:49,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:49,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:49,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:49,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:49,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169756599] [2022-11-16 11:40:49,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169756599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:49,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:49,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:40:49,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312944334] [2022-11-16 11:40:49,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:49,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:40:49,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:49,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:40:49,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:40:49,384 INFO L87 Difference]: Start difference. First operand 1611 states and 2374 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:49,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:49,748 INFO L93 Difference]: Finished difference Result 2721 states and 4066 transitions. [2022-11-16 11:40:49,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:40:49,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-11-16 11:40:49,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:49,758 INFO L225 Difference]: With dead ends: 2721 [2022-11-16 11:40:49,759 INFO L226 Difference]: Without dead ends: 2375 [2022-11-16 11:40:49,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:40:49,764 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 567 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:49,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 928 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:40:49,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2022-11-16 11:40:49,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1921. [2022-11-16 11:40:49,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1921 states, 1920 states have (on average 1.4802083333333333) internal successors, (2842), 1920 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:49,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 2842 transitions. [2022-11-16 11:40:49,970 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 2842 transitions. Word has length 52 [2022-11-16 11:40:49,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:49,971 INFO L495 AbstractCegarLoop]: Abstraction has 1921 states and 2842 transitions. [2022-11-16 11:40:49,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:49,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 2842 transitions. [2022-11-16 11:40:49,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-16 11:40:49,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:49,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:49,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:40:49,974 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:49,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:49,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1268142435, now seen corresponding path program 1 times [2022-11-16 11:40:49,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:49,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136023682] [2022-11-16 11:40:49,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:49,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:50,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:50,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:50,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136023682] [2022-11-16 11:40:50,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136023682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:50,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:50,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:40:50,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143015133] [2022-11-16 11:40:50,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:50,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:40:50,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:50,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:40:50,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:40:50,105 INFO L87 Difference]: Start difference. First operand 1921 states and 2842 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:50,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:50,486 INFO L93 Difference]: Finished difference Result 3135 states and 4687 transitions. [2022-11-16 11:40:50,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:40:50,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-16 11:40:50,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:50,497 INFO L225 Difference]: With dead ends: 3135 [2022-11-16 11:40:50,497 INFO L226 Difference]: Without dead ends: 2789 [2022-11-16 11:40:50,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:40:50,499 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 571 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:50,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 1003 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:40:50,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2022-11-16 11:40:50,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2216. [2022-11-16 11:40:50,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 2215 states have (on average 1.4853273137697518) internal successors, (3290), 2215 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:50,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 3290 transitions. [2022-11-16 11:40:50,741 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 3290 transitions. Word has length 53 [2022-11-16 11:40:50,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:50,742 INFO L495 AbstractCegarLoop]: Abstraction has 2216 states and 3290 transitions. [2022-11-16 11:40:50,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:50,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 3290 transitions. [2022-11-16 11:40:50,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 11:40:50,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:50,744 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] [2022-11-16 11:40:50,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:40:50,744 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:50,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:50,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1868949312, now seen corresponding path program 1 times [2022-11-16 11:40:50,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:50,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440151095] [2022-11-16 11:40:50,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:50,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:50,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:50,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440151095] [2022-11-16 11:40:50,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440151095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:50,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:50,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:40:50,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139402619] [2022-11-16 11:40:50,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:50,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:40:50,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:50,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:40:50,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:40:50,848 INFO L87 Difference]: Start difference. First operand 2216 states and 3290 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:51,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:51,431 INFO L93 Difference]: Finished difference Result 5194 states and 7716 transitions. [2022-11-16 11:40:51,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:40:51,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-11-16 11:40:51,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:51,442 INFO L225 Difference]: With dead ends: 5194 [2022-11-16 11:40:51,442 INFO L226 Difference]: Without dead ends: 3055 [2022-11-16 11:40:51,444 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 11:40:51,445 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 774 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:51,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 213 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:40:51,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2022-11-16 11:40:51,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 3037. [2022-11-16 11:40:51,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3037 states, 3036 states have (on average 1.4720026350461133) internal successors, (4469), 3036 states have internal predecessors, (4469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:51,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 4469 transitions. [2022-11-16 11:40:51,794 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 4469 transitions. Word has length 56 [2022-11-16 11:40:51,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:51,794 INFO L495 AbstractCegarLoop]: Abstraction has 3037 states and 4469 transitions. [2022-11-16 11:40:51,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:51,795 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 4469 transitions. [2022-11-16 11:40:51,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 11:40:51,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:51,797 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] [2022-11-16 11:40:51,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:40:51,797 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:51,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:51,798 INFO L85 PathProgramCache]: Analyzing trace with hash -281542782, now seen corresponding path program 1 times [2022-11-16 11:40:51,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:51,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596133383] [2022-11-16 11:40:51,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:51,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:51,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:51,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:51,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596133383] [2022-11-16 11:40:51,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596133383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:51,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:51,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:40:51,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028018938] [2022-11-16 11:40:51,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:51,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:40:51,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:51,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:40:51,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:40:51,884 INFO L87 Difference]: Start difference. First operand 3037 states and 4469 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:52,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:52,582 INFO L93 Difference]: Finished difference Result 7096 states and 10425 transitions. [2022-11-16 11:40:52,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:40:52,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-11-16 11:40:52,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:52,598 INFO L225 Difference]: With dead ends: 7096 [2022-11-16 11:40:52,598 INFO L226 Difference]: Without dead ends: 4145 [2022-11-16 11:40:52,603 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 11:40:52,606 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 806 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:52,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 201 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:40:52,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4145 states. [2022-11-16 11:40:53,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4145 to 3037. [2022-11-16 11:40:53,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3037 states, 3036 states have (on average 1.4555335968379446) internal successors, (4419), 3036 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:53,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 4419 transitions. [2022-11-16 11:40:53,037 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 4419 transitions. Word has length 57 [2022-11-16 11:40:53,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:53,037 INFO L495 AbstractCegarLoop]: Abstraction has 3037 states and 4419 transitions. [2022-11-16 11:40:53,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:53,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 4419 transitions. [2022-11-16 11:40:53,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 11:40:53,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:53,040 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] [2022-11-16 11:40:53,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:40:53,040 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:53,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:53,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1520651092, now seen corresponding path program 1 times [2022-11-16 11:40:53,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:53,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769534428] [2022-11-16 11:40:53,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:53,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:53,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:53,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769534428] [2022-11-16 11:40:53,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769534428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:53,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:53,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:40:53,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109990674] [2022-11-16 11:40:53,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:53,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:40:53,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:53,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:40:53,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:40:53,160 INFO L87 Difference]: Start difference. First operand 3037 states and 4419 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:53,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:53,846 INFO L93 Difference]: Finished difference Result 7242 states and 10532 transitions. [2022-11-16 11:40:53,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:40:53,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-11-16 11:40:53,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:53,859 INFO L225 Difference]: With dead ends: 7242 [2022-11-16 11:40:53,860 INFO L226 Difference]: Without dead ends: 4246 [2022-11-16 11:40:53,863 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 11:40:53,863 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 783 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:53,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 211 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:40:53,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4246 states. [2022-11-16 11:40:54,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4246 to 4221. [2022-11-16 11:40:54,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4221 states, 4220 states have (on average 1.4417061611374407) internal successors, (6084), 4220 states have internal predecessors, (6084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:54,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4221 states to 4221 states and 6084 transitions. [2022-11-16 11:40:54,382 INFO L78 Accepts]: Start accepts. Automaton has 4221 states and 6084 transitions. Word has length 57 [2022-11-16 11:40:54,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:54,383 INFO L495 AbstractCegarLoop]: Abstraction has 4221 states and 6084 transitions. [2022-11-16 11:40:54,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:54,383 INFO L276 IsEmpty]: Start isEmpty. Operand 4221 states and 6084 transitions. [2022-11-16 11:40:54,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 11:40:54,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:54,386 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] [2022-11-16 11:40:54,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:40:54,386 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:54,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:54,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1438328999, now seen corresponding path program 1 times [2022-11-16 11:40:54,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:54,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504322919] [2022-11-16 11:40:54,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:54,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:54,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:54,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:54,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504322919] [2022-11-16 11:40:54,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504322919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:54,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:54,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:40:54,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34900295] [2022-11-16 11:40:54,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:54,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:40:54,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:54,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:40:54,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:40:54,514 INFO L87 Difference]: Start difference. First operand 4221 states and 6084 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:57,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:57,082 INFO L93 Difference]: Finished difference Result 17865 states and 25675 transitions. [2022-11-16 11:40:57,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:40:57,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-16 11:40:57,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:57,134 INFO L225 Difference]: With dead ends: 17865 [2022-11-16 11:40:57,134 INFO L226 Difference]: Without dead ends: 16495 [2022-11-16 11:40:57,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:40:57,140 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 2547 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2547 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:57,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2547 Valid, 391 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:40:57,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16495 states. [2022-11-16 11:40:57,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16495 to 4233. [2022-11-16 11:40:57,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4233 states, 4232 states have (on average 1.4413988657844992) internal successors, (6100), 4232 states have internal predecessors, (6100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:57,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4233 states to 4233 states and 6100 transitions. [2022-11-16 11:40:57,984 INFO L78 Accepts]: Start accepts. Automaton has 4233 states and 6100 transitions. Word has length 58 [2022-11-16 11:40:57,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:57,984 INFO L495 AbstractCegarLoop]: Abstraction has 4233 states and 6100 transitions. [2022-11-16 11:40:57,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:57,985 INFO L276 IsEmpty]: Start isEmpty. Operand 4233 states and 6100 transitions. [2022-11-16 11:40:57,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-16 11:40:57,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:57,987 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] [2022-11-16 11:40:57,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:40:57,988 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:57,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:57,988 INFO L85 PathProgramCache]: Analyzing trace with hash -497478917, now seen corresponding path program 1 times [2022-11-16 11:40:57,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:57,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633505803] [2022-11-16 11:40:57,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:57,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:58,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:58,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633505803] [2022-11-16 11:40:58,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633505803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:58,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:58,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:40:58,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438953541] [2022-11-16 11:40:58,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:58,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:40:58,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:58,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:40:58,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:40:58,120 INFO L87 Difference]: Start difference. First operand 4233 states and 6100 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:00,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:00,810 INFO L93 Difference]: Finished difference Result 16288 states and 23327 transitions. [2022-11-16 11:41:00,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:41:00,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-11-16 11:41:00,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:00,847 INFO L225 Difference]: With dead ends: 16288 [2022-11-16 11:41:00,847 INFO L226 Difference]: Without dead ends: 14074 [2022-11-16 11:41:00,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:41:00,853 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 1908 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1908 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:00,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1908 Valid, 333 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:41:00,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14074 states. [2022-11-16 11:41:01,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14074 to 4253. [2022-11-16 11:41:01,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4253 states, 4252 states have (on average 1.440263405456256) internal successors, (6124), 4252 states have internal predecessors, (6124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:01,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4253 states to 4253 states and 6124 transitions. [2022-11-16 11:41:01,599 INFO L78 Accepts]: Start accepts. Automaton has 4253 states and 6124 transitions. Word has length 59 [2022-11-16 11:41:01,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:01,600 INFO L495 AbstractCegarLoop]: Abstraction has 4253 states and 6124 transitions. [2022-11-16 11:41:01,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:01,600 INFO L276 IsEmpty]: Start isEmpty. Operand 4253 states and 6124 transitions. [2022-11-16 11:41:01,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-16 11:41:01,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:01,603 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] [2022-11-16 11:41:01,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:41:01,603 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:01,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:01,604 INFO L85 PathProgramCache]: Analyzing trace with hash -2094347044, now seen corresponding path program 1 times [2022-11-16 11:41:01,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:01,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754976308] [2022-11-16 11:41:01,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:01,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:01,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:01,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:01,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754976308] [2022-11-16 11:41:01,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754976308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:01,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:01,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:41:01,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706744574] [2022-11-16 11:41:01,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:01,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:41:01,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:01,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:41:01,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:41:01,752 INFO L87 Difference]: Start difference. First operand 4253 states and 6124 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:05,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:05,469 INFO L93 Difference]: Finished difference Result 19117 states and 27394 transitions. [2022-11-16 11:41:05,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:41:05,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-11-16 11:41:05,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:05,504 INFO L225 Difference]: With dead ends: 19117 [2022-11-16 11:41:05,505 INFO L226 Difference]: Without dead ends: 17075 [2022-11-16 11:41:05,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:41:05,511 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 2147 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2147 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:05,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2147 Valid, 373 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:41:05,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17075 states. [2022-11-16 11:41:06,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17075 to 4331. [2022-11-16 11:41:06,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4331 states, 4330 states have (on average 1.4374133949191685) internal successors, (6224), 4330 states have internal predecessors, (6224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4331 states to 4331 states and 6224 transitions. [2022-11-16 11:41:06,359 INFO L78 Accepts]: Start accepts. Automaton has 4331 states and 6224 transitions. Word has length 59 [2022-11-16 11:41:06,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:06,359 INFO L495 AbstractCegarLoop]: Abstraction has 4331 states and 6224 transitions. [2022-11-16 11:41:06,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:06,360 INFO L276 IsEmpty]: Start isEmpty. Operand 4331 states and 6224 transitions. [2022-11-16 11:41:06,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 11:41:06,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:06,362 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] [2022-11-16 11:41:06,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:41:06,363 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:06,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:06,363 INFO L85 PathProgramCache]: Analyzing trace with hash 740296785, now seen corresponding path program 1 times [2022-11-16 11:41:06,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:06,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768162819] [2022-11-16 11:41:06,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:06,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:06,747 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 11:41:06,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:06,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768162819] [2022-11-16 11:41:06,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768162819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:06,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:06,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:41:06,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495419249] [2022-11-16 11:41:06,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:06,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:41:06,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:06,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:41:06,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:41:06,749 INFO L87 Difference]: Start difference. First operand 4331 states and 6224 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:10,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:10,524 INFO L93 Difference]: Finished difference Result 14786 states and 21200 transitions. [2022-11-16 11:41:10,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 11:41:10,524 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-11-16 11:41:10,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:10,545 INFO L225 Difference]: With dead ends: 14786 [2022-11-16 11:41:10,545 INFO L226 Difference]: Without dead ends: 11209 [2022-11-16 11:41:10,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:41:10,552 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 2090 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2090 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:10,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2090 Valid, 1116 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:41:10,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11209 states. [2022-11-16 11:41:11,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11209 to 4331. [2022-11-16 11:41:11,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4331 states, 4330 states have (on average 1.4360277136258661) internal successors, (6218), 4330 states have internal predecessors, (6218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4331 states to 4331 states and 6218 transitions. [2022-11-16 11:41:11,802 INFO L78 Accepts]: Start accepts. Automaton has 4331 states and 6218 transitions. Word has length 61 [2022-11-16 11:41:11,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:11,802 INFO L495 AbstractCegarLoop]: Abstraction has 4331 states and 6218 transitions. [2022-11-16 11:41:11,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:11,802 INFO L276 IsEmpty]: Start isEmpty. Operand 4331 states and 6218 transitions. [2022-11-16 11:41:11,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 11:41:11,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:11,805 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] [2022-11-16 11:41:11,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:41:11,805 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:11,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:11,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1120228239, now seen corresponding path program 1 times [2022-11-16 11:41:11,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:11,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563500173] [2022-11-16 11:41:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:11,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:12,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:12,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:12,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563500173] [2022-11-16 11:41:12,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563500173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:12,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:12,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:41:12,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974570497] [2022-11-16 11:41:12,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:12,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:41:12,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:12,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:41:12,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:41:12,143 INFO L87 Difference]: Start difference. First operand 4331 states and 6218 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:15,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:15,851 INFO L93 Difference]: Finished difference Result 14337 states and 20585 transitions. [2022-11-16 11:41:15,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:41:15,851 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-11-16 11:41:15,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:15,868 INFO L225 Difference]: With dead ends: 14337 [2022-11-16 11:41:15,868 INFO L226 Difference]: Without dead ends: 10893 [2022-11-16 11:41:15,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:41:15,876 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 2176 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2176 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:15,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2176 Valid, 1095 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:41:15,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10893 states. [2022-11-16 11:41:17,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10893 to 4249. [2022-11-16 11:41:17,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4249 states, 4248 states have (on average 1.4324387947269304) internal successors, (6085), 4248 states have internal predecessors, (6085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:17,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4249 states to 4249 states and 6085 transitions. [2022-11-16 11:41:17,135 INFO L78 Accepts]: Start accepts. Automaton has 4249 states and 6085 transitions. Word has length 61 [2022-11-16 11:41:17,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:17,135 INFO L495 AbstractCegarLoop]: Abstraction has 4249 states and 6085 transitions. [2022-11-16 11:41:17,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:17,136 INFO L276 IsEmpty]: Start isEmpty. Operand 4249 states and 6085 transitions. [2022-11-16 11:41:17,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 11:41:17,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:17,138 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] [2022-11-16 11:41:17,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:41:17,139 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:17,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:17,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1451678096, now seen corresponding path program 1 times [2022-11-16 11:41:17,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:17,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685972808] [2022-11-16 11:41:17,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:17,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:17,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:17,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:17,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685972808] [2022-11-16 11:41:17,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685972808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:17,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:17,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:41:17,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092378481] [2022-11-16 11:41:17,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:17,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:41:17,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:17,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:41:17,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:41:17,503 INFO L87 Difference]: Start difference. First operand 4249 states and 6085 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:21,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:21,990 INFO L93 Difference]: Finished difference Result 14864 states and 21312 transitions. [2022-11-16 11:41:21,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:41:21,990 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-11-16 11:41:21,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:22,001 INFO L225 Difference]: With dead ends: 14864 [2022-11-16 11:41:22,001 INFO L226 Difference]: Without dead ends: 11292 [2022-11-16 11:41:22,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:41:22,007 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 1585 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:22,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 1587 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:41:22,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11292 states. [2022-11-16 11:41:23,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11292 to 4074. [2022-11-16 11:41:23,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4074 states, 4073 states have (on average 1.4286766511171127) internal successors, (5819), 4073 states have internal predecessors, (5819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:23,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4074 states to 4074 states and 5819 transitions. [2022-11-16 11:41:23,155 INFO L78 Accepts]: Start accepts. Automaton has 4074 states and 5819 transitions. Word has length 61 [2022-11-16 11:41:23,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:23,155 INFO L495 AbstractCegarLoop]: Abstraction has 4074 states and 5819 transitions. [2022-11-16 11:41:23,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:23,156 INFO L276 IsEmpty]: Start isEmpty. Operand 4074 states and 5819 transitions. [2022-11-16 11:41:23,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:41:23,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:23,157 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] [2022-11-16 11:41:23,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:41:23,157 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:23,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:23,158 INFO L85 PathProgramCache]: Analyzing trace with hash 218587336, now seen corresponding path program 1 times [2022-11-16 11:41:23,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:23,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892978286] [2022-11-16 11:41:23,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:23,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:23,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:23,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:23,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892978286] [2022-11-16 11:41:23,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892978286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:23,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:23,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:41:23,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902754663] [2022-11-16 11:41:23,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:23,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:41:23,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:23,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:41:23,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:23,207 INFO L87 Difference]: Start difference. First operand 4074 states and 5819 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:24,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:24,446 INFO L93 Difference]: Finished difference Result 6080 states and 8710 transitions. [2022-11-16 11:41:24,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:41:24,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-11-16 11:41:24,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:24,450 INFO L225 Difference]: With dead ends: 6080 [2022-11-16 11:41:24,450 INFO L226 Difference]: Without dead ends: 3967 [2022-11-16 11:41:24,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:24,452 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 132 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:24,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 476 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:41:24,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3967 states. [2022-11-16 11:41:25,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3967 to 3965. [2022-11-16 11:41:25,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3965 states, 3964 states have (on average 1.4129667003027244) internal successors, (5601), 3964 states have internal predecessors, (5601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:25,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3965 states to 3965 states and 5601 transitions. [2022-11-16 11:41:25,479 INFO L78 Accepts]: Start accepts. Automaton has 3965 states and 5601 transitions. Word has length 62 [2022-11-16 11:41:25,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:25,480 INFO L495 AbstractCegarLoop]: Abstraction has 3965 states and 5601 transitions. [2022-11-16 11:41:25,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:25,480 INFO L276 IsEmpty]: Start isEmpty. Operand 3965 states and 5601 transitions. [2022-11-16 11:41:25,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:41:25,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:25,483 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] [2022-11-16 11:41:25,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:41:25,483 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:25,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:25,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1004137309, now seen corresponding path program 1 times [2022-11-16 11:41:25,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:25,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059921848] [2022-11-16 11:41:25,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:25,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:25,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:25,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:25,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059921848] [2022-11-16 11:41:25,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059921848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:25,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:25,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:41:25,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655960409] [2022-11-16 11:41:25,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:25,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:41:25,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:25,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:41:25,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:25,534 INFO L87 Difference]: Start difference. First operand 3965 states and 5601 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:26,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:26,534 INFO L93 Difference]: Finished difference Result 5467 states and 7722 transitions. [2022-11-16 11:41:26,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:41:26,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-11-16 11:41:26,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:26,538 INFO L225 Difference]: With dead ends: 5467 [2022-11-16 11:41:26,538 INFO L226 Difference]: Without dead ends: 3372 [2022-11-16 11:41:26,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:26,541 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 120 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:26,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 465 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:41:26,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3372 states. [2022-11-16 11:41:27,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3372 to 3370. [2022-11-16 11:41:27,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3370 states, 3369 states have (on average 1.3864648263579697) internal successors, (4671), 3369 states have internal predecessors, (4671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:27,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3370 states to 3370 states and 4671 transitions. [2022-11-16 11:41:27,601 INFO L78 Accepts]: Start accepts. Automaton has 3370 states and 4671 transitions. Word has length 62 [2022-11-16 11:41:27,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:27,602 INFO L495 AbstractCegarLoop]: Abstraction has 3370 states and 4671 transitions. [2022-11-16 11:41:27,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:27,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3370 states and 4671 transitions. [2022-11-16 11:41:27,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:41:27,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:27,605 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] [2022-11-16 11:41:27,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:41:27,606 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:27,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:27,607 INFO L85 PathProgramCache]: Analyzing trace with hash -17959571, now seen corresponding path program 1 times [2022-11-16 11:41:27,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:27,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105071097] [2022-11-16 11:41:27,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:27,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:27,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:27,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105071097] [2022-11-16 11:41:27,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105071097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:27,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:27,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:41:27,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977623845] [2022-11-16 11:41:27,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:27,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:41:27,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:27,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:41:27,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:27,665 INFO L87 Difference]: Start difference. First operand 3370 states and 4671 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:28,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:28,597 INFO L93 Difference]: Finished difference Result 4119 states and 5686 transitions. [2022-11-16 11:41:28,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:41:28,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-11-16 11:41:28,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:28,600 INFO L225 Difference]: With dead ends: 4119 [2022-11-16 11:41:28,600 INFO L226 Difference]: Without dead ends: 2782 [2022-11-16 11:41:28,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:28,601 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 150 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:28,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 481 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:41:28,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2022-11-16 11:41:29,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2780. [2022-11-16 11:41:29,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 2779 states have (on average 1.3537243612810363) internal successors, (3762), 2779 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:29,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 3762 transitions. [2022-11-16 11:41:29,339 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 3762 transitions. Word has length 62 [2022-11-16 11:41:29,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:29,339 INFO L495 AbstractCegarLoop]: Abstraction has 2780 states and 3762 transitions. [2022-11-16 11:41:29,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:29,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 3762 transitions. [2022-11-16 11:41:29,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 11:41:29,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:29,341 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 11:41:29,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:41:29,342 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:29,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:29,342 INFO L85 PathProgramCache]: Analyzing trace with hash -467159905, now seen corresponding path program 1 times [2022-11-16 11:41:29,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:29,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137892157] [2022-11-16 11:41:29,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:29,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:30,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:30,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137892157] [2022-11-16 11:41:30,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137892157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:30,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:30,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 11:41:30,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981469558] [2022-11-16 11:41:30,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:30,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:41:30,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:30,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:41:30,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:41:30,088 INFO L87 Difference]: Start difference. First operand 2780 states and 3762 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 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 11:41:34,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:34,858 INFO L93 Difference]: Finished difference Result 8466 states and 11629 transitions. [2022-11-16 11:41:34,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:41:34,859 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 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 11:41:34,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:34,866 INFO L225 Difference]: With dead ends: 8466 [2022-11-16 11:41:34,866 INFO L226 Difference]: Without dead ends: 8078 [2022-11-16 11:41:34,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=238, Invalid=632, Unknown=0, NotChecked=0, Total=870 [2022-11-16 11:41:34,869 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 2863 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2863 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:34,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2863 Valid, 2649 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:41:34,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8078 states. [2022-11-16 11:41:35,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8078 to 2691. [2022-11-16 11:41:35,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2691 states, 2690 states have (on average 1.3535315985130112) internal successors, (3641), 2690 states have internal predecessors, (3641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:35,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2691 states to 2691 states and 3641 transitions. [2022-11-16 11:41:35,881 INFO L78 Accepts]: Start accepts. Automaton has 2691 states and 3641 transitions. Word has length 63 [2022-11-16 11:41:35,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:35,881 INFO L495 AbstractCegarLoop]: Abstraction has 2691 states and 3641 transitions. [2022-11-16 11:41:35,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 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 11:41:35,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2691 states and 3641 transitions. [2022-11-16 11:41:35,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 11:41:35,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:35,884 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 11:41:35,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:41:35,885 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:35,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:35,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1791049563, now seen corresponding path program 1 times [2022-11-16 11:41:35,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:35,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825021141] [2022-11-16 11:41:35,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:35,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:36,489 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 11:41:36,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:36,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825021141] [2022-11-16 11:41:36,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825021141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:36,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:36,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 11:41:36,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775982957] [2022-11-16 11:41:36,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:36,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:41:36,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:36,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:41:36,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:41:36,492 INFO L87 Difference]: Start difference. First operand 2691 states and 3641 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 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 11:41:40,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:40,539 INFO L93 Difference]: Finished difference Result 6769 states and 9275 transitions. [2022-11-16 11:41:40,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:41:40,540 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 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 11:41:40,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:40,547 INFO L225 Difference]: With dead ends: 6769 [2022-11-16 11:41:40,547 INFO L226 Difference]: Without dead ends: 6405 [2022-11-16 11:41:40,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2022-11-16 11:41:40,550 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1820 mSDsluCounter, 2662 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1820 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:40,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1820 Valid, 3094 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:41:40,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6405 states. [2022-11-16 11:41:41,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6405 to 2606. [2022-11-16 11:41:41,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2606 states, 2605 states have (on average 1.3531669865642995) internal successors, (3525), 2605 states have internal predecessors, (3525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:41,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2606 states to 2606 states and 3525 transitions. [2022-11-16 11:41:41,645 INFO L78 Accepts]: Start accepts. Automaton has 2606 states and 3525 transitions. Word has length 63 [2022-11-16 11:41:41,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:41,645 INFO L495 AbstractCegarLoop]: Abstraction has 2606 states and 3525 transitions. [2022-11-16 11:41:41,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 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 11:41:41,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2606 states and 3525 transitions. [2022-11-16 11:41:41,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 11:41:41,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:41,648 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 11:41:41,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:41:41,648 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:41,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:41,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1695928295, now seen corresponding path program 1 times [2022-11-16 11:41:41,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:41,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92115449] [2022-11-16 11:41:41,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:41,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:41,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:41,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:41,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92115449] [2022-11-16 11:41:41,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92115449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:41,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:41,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:41:41,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296640385] [2022-11-16 11:41:41,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:41,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:41:41,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:41,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:41:41,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:41:41,753 INFO L87 Difference]: Start difference. First operand 2606 states and 3525 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 11:41:43,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:43,216 INFO L93 Difference]: Finished difference Result 2612 states and 3528 transitions. [2022-11-16 11:41:43,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:41:43,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 11:41:43,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:43,220 INFO L225 Difference]: With dead ends: 2612 [2022-11-16 11:41:43,220 INFO L226 Difference]: Without dead ends: 2386 [2022-11-16 11:41:43,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:41:43,221 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 566 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:43,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 628 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:41:43,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2022-11-16 11:41:44,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 2382. [2022-11-16 11:41:44,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2381 states have (on average 1.3548929021419571) internal successors, (3226), 2381 states have internal predecessors, (3226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:44,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3226 transitions. [2022-11-16 11:41:44,185 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3226 transitions. Word has length 65 [2022-11-16 11:41:44,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:44,186 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 3226 transitions. [2022-11-16 11:41:44,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 11:41:44,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3226 transitions. [2022-11-16 11:41:44,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:41:44,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:44,188 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 11:41:44,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 11:41:44,188 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:44,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:44,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1507814999, now seen corresponding path program 1 times [2022-11-16 11:41:44,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:44,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497180450] [2022-11-16 11:41:44,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:44,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:44,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:44,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:44,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497180450] [2022-11-16 11:41:44,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497180450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:44,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:44,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:41:44,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836650628] [2022-11-16 11:41:44,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:44,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:41:44,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:44,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:41:44,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:44,280 INFO L87 Difference]: Start difference. First operand 2382 states and 3226 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:46,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:46,480 INFO L93 Difference]: Finished difference Result 5821 states and 8010 transitions. [2022-11-16 11:41:46,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:41:46,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-16 11:41:46,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:46,485 INFO L225 Difference]: With dead ends: 5821 [2022-11-16 11:41:46,485 INFO L226 Difference]: Without dead ends: 4024 [2022-11-16 11:41:46,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:46,488 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 103 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:46,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 413 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:41:46,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2022-11-16 11:41:48,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3756. [2022-11-16 11:41:48,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3756 states, 3755 states have (on average 1.363515312916112) internal successors, (5120), 3755 states have internal predecessors, (5120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:48,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3756 states to 3756 states and 5120 transitions. [2022-11-16 11:41:48,090 INFO L78 Accepts]: Start accepts. Automaton has 3756 states and 5120 transitions. Word has length 68 [2022-11-16 11:41:48,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:48,091 INFO L495 AbstractCegarLoop]: Abstraction has 3756 states and 5120 transitions. [2022-11-16 11:41:48,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:48,091 INFO L276 IsEmpty]: Start isEmpty. Operand 3756 states and 5120 transitions. [2022-11-16 11:41:48,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 11:41:48,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:48,093 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 11:41:48,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 11:41:48,094 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:48,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:48,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1724760844, now seen corresponding path program 1 times [2022-11-16 11:41:48,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:48,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774281874] [2022-11-16 11:41:48,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:48,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:48,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:48,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:48,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774281874] [2022-11-16 11:41:48,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774281874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:48,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:48,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:41:48,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660117914] [2022-11-16 11:41:48,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:48,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:41:48,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:48,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:41:48,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:48,186 INFO L87 Difference]: Start difference. First operand 3756 states and 5120 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:51,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:51,160 INFO L93 Difference]: Finished difference Result 9788 states and 13454 transitions. [2022-11-16 11:41:51,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:41:51,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-16 11:41:51,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:51,173 INFO L225 Difference]: With dead ends: 9788 [2022-11-16 11:41:51,173 INFO L226 Difference]: Without dead ends: 6617 [2022-11-16 11:41:51,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:51,176 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 92 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:51,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 405 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:41:51,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6617 states. [2022-11-16 11:41:53,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6617 to 6083. [2022-11-16 11:41:53,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6083 states, 6082 states have (on average 1.3633673133837554) internal successors, (8292), 6082 states have internal predecessors, (8292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:53,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6083 states to 6083 states and 8292 transitions. [2022-11-16 11:41:53,898 INFO L78 Accepts]: Start accepts. Automaton has 6083 states and 8292 transitions. Word has length 69 [2022-11-16 11:41:53,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:53,898 INFO L495 AbstractCegarLoop]: Abstraction has 6083 states and 8292 transitions. [2022-11-16 11:41:53,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:53,899 INFO L276 IsEmpty]: Start isEmpty. Operand 6083 states and 8292 transitions. [2022-11-16 11:41:53,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 11:41:53,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:53,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:53,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 11:41:53,902 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:53,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:53,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1274692746, now seen corresponding path program 1 times [2022-11-16 11:41:53,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:53,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072015393] [2022-11-16 11:41:53,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:53,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:54,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:41:54,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:54,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072015393] [2022-11-16 11:41:54,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072015393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:54,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:54,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:41:54,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089571999] [2022-11-16 11:41:54,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:54,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:41:54,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:54,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:41:54,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:41:54,079 INFO L87 Difference]: Start difference. First operand 6083 states and 8292 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 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 11:42:00,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:42:00,938 INFO L93 Difference]: Finished difference Result 12863 states and 17294 transitions. [2022-11-16 11:42:00,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:42:00,939 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 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 11:42:00,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:42:00,956 INFO L225 Difference]: With dead ends: 12863 [2022-11-16 11:42:00,956 INFO L226 Difference]: Without dead ends: 12861 [2022-11-16 11:42:00,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:42:00,959 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 312 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:42:00,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 999 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:42:00,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12861 states. [2022-11-16 11:42:04,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12861 to 6575. [2022-11-16 11:42:04,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6575 states, 6574 states have (on average 1.3361728019470642) internal successors, (8784), 6574 states have internal predecessors, (8784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:42:04,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6575 states to 6575 states and 8784 transitions. [2022-11-16 11:42:04,217 INFO L78 Accepts]: Start accepts. Automaton has 6575 states and 8784 transitions. Word has length 72 [2022-11-16 11:42:04,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:42:04,217 INFO L495 AbstractCegarLoop]: Abstraction has 6575 states and 8784 transitions. [2022-11-16 11:42:04,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 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 11:42:04,217 INFO L276 IsEmpty]: Start isEmpty. Operand 6575 states and 8784 transitions. [2022-11-16 11:42:04,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 11:42:04,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:42:04,220 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] [2022-11-16 11:42:04,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 11:42:04,220 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:42:04,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:42:04,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1392355153, now seen corresponding path program 1 times [2022-11-16 11:42:04,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:42:04,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275129874] [2022-11-16 11:42:04,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:42:04,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:42:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:04,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:42:04,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:42:04,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275129874] [2022-11-16 11:42:04,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275129874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:42:04,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:42:04,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:42:04,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065940177] [2022-11-16 11:42:04,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:42:04,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:42:04,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:42:04,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:42:04,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:42:04,269 INFO L87 Difference]: Start difference. First operand 6575 states and 8784 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:42:10,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:42:10,175 INFO L93 Difference]: Finished difference Result 17171 states and 22931 transitions. [2022-11-16 11:42:10,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:42:10,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-11-16 11:42:10,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:42:10,186 INFO L225 Difference]: With dead ends: 17171 [2022-11-16 11:42:10,187 INFO L226 Difference]: Without dead ends: 11089 [2022-11-16 11:42:10,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:42:10,191 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 122 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:42:10,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 317 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:42:10,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11089 states. [2022-11-16 11:42:16,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11089 to 10923. [2022-11-16 11:42:16,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10923 states, 10922 states have (on average 1.3022340230726972) internal successors, (14223), 10922 states have internal predecessors, (14223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:42:16,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10923 states to 10923 states and 14223 transitions. [2022-11-16 11:42:16,144 INFO L78 Accepts]: Start accepts. Automaton has 10923 states and 14223 transitions. Word has length 73 [2022-11-16 11:42:16,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:42:16,145 INFO L495 AbstractCegarLoop]: Abstraction has 10923 states and 14223 transitions. [2022-11-16 11:42:16,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:42:16,145 INFO L276 IsEmpty]: Start isEmpty. Operand 10923 states and 14223 transitions. [2022-11-16 11:42:16,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-16 11:42:16,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:42:16,147 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 11:42:16,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 11:42:16,148 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:42:16,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:42:16,148 INFO L85 PathProgramCache]: Analyzing trace with hash 2638653, now seen corresponding path program 1 times [2022-11-16 11:42:16,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:42:16,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242743185] [2022-11-16 11:42:16,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:42:16,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:42:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:16,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:42:16,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:42:16,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242743185] [2022-11-16 11:42:16,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242743185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:42:16,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:42:16,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:42:16,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239495781] [2022-11-16 11:42:16,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:42:16,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:42:16,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:42:16,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:42:16,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:42:16,252 INFO L87 Difference]: Start difference. First operand 10923 states and 14223 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2022-11-16 11:42:25,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:42:25,532 INFO L93 Difference]: Finished difference Result 27479 states and 35765 transitions. [2022-11-16 11:42:25,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:42:25,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) Word has length 74 [2022-11-16 11:42:25,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:42:25,549 INFO L225 Difference]: With dead ends: 27479 [2022-11-16 11:42:25,549 INFO L226 Difference]: Without dead ends: 17032 [2022-11-16 11:42:25,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:42:25,557 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 96 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:42:25,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 400 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:42:25,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17032 states. [2022-11-16 11:42:33,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17032 to 15446. [2022-11-16 11:42:33,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15446 states, 15445 states have (on average 1.2905147296859825) internal successors, (19932), 15445 states have internal predecessors, (19932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:42:34,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15446 states to 15446 states and 19932 transitions. [2022-11-16 11:42:34,003 INFO L78 Accepts]: Start accepts. Automaton has 15446 states and 19932 transitions. Word has length 74 [2022-11-16 11:42:34,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:42:34,004 INFO L495 AbstractCegarLoop]: Abstraction has 15446 states and 19932 transitions. [2022-11-16 11:42:34,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2022-11-16 11:42:34,004 INFO L276 IsEmpty]: Start isEmpty. Operand 15446 states and 19932 transitions. [2022-11-16 11:42:34,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-16 11:42:34,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:42:34,007 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:42:34,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 11:42:34,007 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:42:34,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:42:34,008 INFO L85 PathProgramCache]: Analyzing trace with hash -786165995, now seen corresponding path program 1 times [2022-11-16 11:42:34,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:42:34,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325334659] [2022-11-16 11:42:34,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:42:34,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:42:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:34,294 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:42:34,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:42:34,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325334659] [2022-11-16 11:42:34,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325334659] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:42:34,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627739666] [2022-11-16 11:42:34,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:42:34,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:42:34,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a169a35b-5068-43de-aa5a-8b24412ec269/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:42:34,301 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a169a35b-5068-43de-aa5a-8b24412ec269/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:42:34,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a169a35b-5068-43de-aa5a-8b24412ec269/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:42:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:34,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 11:42:34,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:42:36,537 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:42:36,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:42:37,669 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:42:37,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627739666] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:42:37,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:42:37,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 31 [2022-11-16 11:42:37,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023288991] [2022-11-16 11:42:37,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:42:37,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 11:42:37,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:42:37,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 11:42:37,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:42:37,672 INFO L87 Difference]: Start difference. First operand 15446 states and 19932 transitions. Second operand has 32 states, 32 states have (on average 7.65625) internal successors, (245), 31 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:58,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:58,796 INFO L93 Difference]: Finished difference Result 161413 states and 204558 transitions. [2022-11-16 11:44:58,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 310 states. [2022-11-16 11:44:58,797 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.65625) internal successors, (245), 31 states have internal predecessors, (245), 0 states have call successors, (0), 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 92 [2022-11-16 11:44:58,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:59,050 INFO L225 Difference]: With dead ends: 161413 [2022-11-16 11:44:59,050 INFO L226 Difference]: Without dead ends: 153703 [2022-11-16 11:44:59,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 338 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51474 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=17824, Invalid=97436, Unknown=0, NotChecked=0, Total=115260 [2022-11-16 11:44:59,110 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 8486 mSDsluCounter, 7382 mSDsCounter, 0 mSdLazyCounter, 6811 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8486 SdHoareTripleChecker+Valid, 7759 SdHoareTripleChecker+Invalid, 6939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 6811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:59,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8486 Valid, 7759 Invalid, 6939 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [128 Valid, 6811 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-16 11:44:59,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153703 states.