./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e09370-3002-47ac-93a3-92753b4e8957/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e09370-3002-47ac-93a3-92753b4e8957/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_c2e09370-3002-47ac-93a3-92753b4e8957/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e09370-3002-47ac-93a3-92753b4e8957/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e09370-3002-47ac-93a3-92753b4e8957/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_c2e09370-3002-47ac-93a3-92753b4e8957/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 c056d4e57d61d37550728f0e28e1a5e47ebeedfd3e4791c23bdeb0bab1210358 --- 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 11:12:49,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:12:49,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:12:49,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:12:49,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:12:49,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:12:49,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:12:49,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:12:49,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:12:49,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:12:49,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:12:49,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:12:49,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:12:49,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:12:49,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:12:49,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:12:49,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:12:49,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:12:49,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:12:49,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:12:49,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:12:49,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:12:49,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:12:49,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:12:49,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:12:49,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:12:49,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:12:49,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:12:49,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:12:49,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:12:49,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:12:49,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:12:49,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:12:49,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:12:49,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:12:49,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:12:49,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:12:49,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:12:49,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:12:49,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:12:49,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:12:49,736 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e09370-3002-47ac-93a3-92753b4e8957/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:12:49,777 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:12:49,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:12:49,781 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:12:49,781 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:12:49,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:12:49,783 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:12:49,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:12:49,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:12:49,784 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:12:49,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:12:49,785 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:12:49,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:12:49,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:12:49,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:12:49,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:12:49,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:12:49,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:12:49,787 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:12:49,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:12:49,787 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:12:49,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:12:49,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:12:49,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:12:49,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:12:49,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:12:49,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:12:49,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:12:49,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:12:49,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:12:49,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:12:49,791 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:12:49,791 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:12:49,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:12:49,792 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_c2e09370-3002-47ac-93a3-92753b4e8957/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e09370-3002-47ac-93a3-92753b4e8957/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c056d4e57d61d37550728f0e28e1a5e47ebeedfd3e4791c23bdeb0bab1210358 [2022-11-16 11:12:50,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:12:50,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:12:50,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:12:50,120 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:12:50,121 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:12:50,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e09370-3002-47ac-93a3-92753b4e8957/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-11-16 11:12:50,196 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e09370-3002-47ac-93a3-92753b4e8957/bin/uautomizer-tPACEb0tL8/data/e8583781b/6692cf5f655242dc8f54c1fc4107bfc6/FLAG82633fdae [2022-11-16 11:12:50,805 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:12:50,806 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e09370-3002-47ac-93a3-92753b4e8957/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-11-16 11:12:50,817 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e09370-3002-47ac-93a3-92753b4e8957/bin/uautomizer-tPACEb0tL8/data/e8583781b/6692cf5f655242dc8f54c1fc4107bfc6/FLAG82633fdae [2022-11-16 11:12:51,112 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e09370-3002-47ac-93a3-92753b4e8957/bin/uautomizer-tPACEb0tL8/data/e8583781b/6692cf5f655242dc8f54c1fc4107bfc6 [2022-11-16 11:12:51,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:12:51,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:12:51,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:12:51,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:12:51,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:12:51,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:12:51" (1/1) ... [2022-11-16 11:12:51,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72e3bb4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:51, skipping insertion in model container [2022-11-16 11:12:51,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:12:51" (1/1) ... [2022-11-16 11:12:51,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:12:51,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:12:51,435 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_c2e09370-3002-47ac-93a3-92753b4e8957/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[5769,5782] [2022-11-16 11:12:51,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:12:51,476 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:12:51,523 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_c2e09370-3002-47ac-93a3-92753b4e8957/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[5769,5782] [2022-11-16 11:12:51,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:12:51,573 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:12:51,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:51 WrapperNode [2022-11-16 11:12:51,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:12:51,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:12:51,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:12:51,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:12:51,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:51" (1/1) ... [2022-11-16 11:12:51,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:51" (1/1) ... [2022-11-16 11:12:51,636 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 417 [2022-11-16 11:12:51,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:12:51,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:12:51,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:12:51,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:12:51,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:51" (1/1) ... [2022-11-16 11:12:51,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:51" (1/1) ... [2022-11-16 11:12:51,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:51" (1/1) ... [2022-11-16 11:12:51,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:51" (1/1) ... [2022-11-16 11:12:51,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:51" (1/1) ... [2022-11-16 11:12:51,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:51" (1/1) ... [2022-11-16 11:12:51,680 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:51" (1/1) ... [2022-11-16 11:12:51,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:51" (1/1) ... [2022-11-16 11:12:51,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:12:51,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:12:51,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:12:51,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:12:51,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:51" (1/1) ... [2022-11-16 11:12:51,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:12:51,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e09370-3002-47ac-93a3-92753b4e8957/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:51,775 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e09370-3002-47ac-93a3-92753b4e8957/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:12:51,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e09370-3002-47ac-93a3-92753b4e8957/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:12:51,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:12:51,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:12:51,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:12:51,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:12:51,975 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:12:51,977 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:12:52,594 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:12:52,609 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:12:52,610 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:12:52,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:12:52 BoogieIcfgContainer [2022-11-16 11:12:52,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:12:52,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:12:52,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:12:52,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:12:52,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:12:51" (1/3) ... [2022-11-16 11:12:52,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673d414c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:12:52, skipping insertion in model container [2022-11-16 11:12:52,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:51" (2/3) ... [2022-11-16 11:12:52,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673d414c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:12:52, skipping insertion in model container [2022-11-16 11:12:52,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:12:52" (3/3) ... [2022-11-16 11:12:52,623 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2022-11-16 11:12:52,643 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:12:52,644 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:12:52,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:12:52,743 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;@3309ae4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:12:52,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:12:52,758 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 95 states have (on average 1.736842105263158) internal successors, (165), 96 states have internal predecessors, (165), 0 states have call successors, (0), 0 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 11:12:52,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-16 11:12:52,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:52,768 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 11:12:52,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:52,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:52,775 INFO L85 PathProgramCache]: Analyzing trace with hash -857023919, now seen corresponding path program 1 times [2022-11-16 11:12:52,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:52,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195233876] [2022-11-16 11:12:52,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:52,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:53,380 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 11:12:53,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:53,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195233876] [2022-11-16 11:12:53,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195233876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:53,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:53,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:12:53,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596118767] [2022-11-16 11:12:53,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:53,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:53,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:53,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:53,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:12:53,434 INFO L87 Difference]: Start difference. First operand has 97 states, 95 states have (on average 1.736842105263158) internal successors, (165), 96 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 11:12:53,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:53,589 INFO L93 Difference]: Finished difference Result 215 states and 350 transitions. [2022-11-16 11:12:53,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:12:53,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 11:12:53,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:53,615 INFO L225 Difference]: With dead ends: 215 [2022-11-16 11:12:53,615 INFO L226 Difference]: Without dead ends: 146 [2022-11-16 11:12:53,620 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 11:12:53,624 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 115 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:53,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 341 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:12:53,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-16 11:12:53,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2022-11-16 11:12:53,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.4615384615384615) internal successors, (209), 143 states have internal predecessors, (209), 0 states have call successors, (0), 0 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 11:12:53,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 209 transitions. [2022-11-16 11:12:53,728 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 209 transitions. Word has length 59 [2022-11-16 11:12:53,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:53,728 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 209 transitions. [2022-11-16 11:12:53,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 11:12:53,730 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 209 transitions. [2022-11-16 11:12:53,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-16 11:12:53,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:53,733 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] [2022-11-16 11:12:53,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:12:53,734 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:53,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:53,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1265777508, now seen corresponding path program 1 times [2022-11-16 11:12:53,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:53,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498596884] [2022-11-16 11:12:53,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:53,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:53,950 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 11:12:53,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:53,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498596884] [2022-11-16 11:12:53,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498596884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:53,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:53,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:12:53,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143799704] [2022-11-16 11:12:53,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:53,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:53,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:53,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:53,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:12:53,982 INFO L87 Difference]: Start difference. First operand 144 states and 209 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 11:12:54,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:54,095 INFO L93 Difference]: Finished difference Result 348 states and 533 transitions. [2022-11-16 11:12:54,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:12:54,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-11-16 11:12:54,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:54,102 INFO L225 Difference]: With dead ends: 348 [2022-11-16 11:12:54,102 INFO L226 Difference]: Without dead ends: 238 [2022-11-16 11:12:54,106 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 11:12:54,107 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 80 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:54,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 293 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:12:54,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-16 11:12:54,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2022-11-16 11:12:54,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.5106382978723405) internal successors, (355), 235 states have internal predecessors, (355), 0 states have call successors, (0), 0 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 11:12:54,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 355 transitions. [2022-11-16 11:12:54,165 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 355 transitions. Word has length 60 [2022-11-16 11:12:54,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:54,167 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 355 transitions. [2022-11-16 11:12:54,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 11:12:54,167 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 355 transitions. [2022-11-16 11:12:54,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 11:12:54,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:54,176 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 11:12:54,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:12:54,176 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:54,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:54,177 INFO L85 PathProgramCache]: Analyzing trace with hash -943758039, now seen corresponding path program 1 times [2022-11-16 11:12:54,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:54,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750339270] [2022-11-16 11:12:54,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:54,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:54,329 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 11:12:54,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:54,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750339270] [2022-11-16 11:12:54,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750339270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:54,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:54,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:12:54,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405420604] [2022-11-16 11:12:54,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:54,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:54,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:54,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:54,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:12:54,334 INFO L87 Difference]: Start difference. First operand 236 states and 355 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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 11:12:54,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:54,417 INFO L93 Difference]: Finished difference Result 608 states and 945 transitions. [2022-11-16 11:12:54,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:12:54,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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 11:12:54,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:54,421 INFO L225 Difference]: With dead ends: 608 [2022-11-16 11:12:54,421 INFO L226 Difference]: Without dead ends: 406 [2022-11-16 11:12:54,428 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 11:12:54,433 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 75 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:54,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 289 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:12:54,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-11-16 11:12:54,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 404. [2022-11-16 11:12:54,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 1.5359801488833746) internal successors, (619), 403 states have internal predecessors, (619), 0 states have call successors, (0), 0 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 11:12:54,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 619 transitions. [2022-11-16 11:12:54,497 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 619 transitions. Word has length 61 [2022-11-16 11:12:54,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:54,499 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 619 transitions. [2022-11-16 11:12:54,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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 11:12:54,500 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 619 transitions. [2022-11-16 11:12:54,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:12:54,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:54,501 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 11:12:54,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:12:54,502 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:54,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:54,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1997598018, now seen corresponding path program 1 times [2022-11-16 11:12:54,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:54,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884055803] [2022-11-16 11:12:54,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:54,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:54,635 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 11:12:54,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:54,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884055803] [2022-11-16 11:12:54,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884055803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:54,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:54,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:12:54,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893063440] [2022-11-16 11:12:54,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:54,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:54,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:54,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:54,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:12:54,638 INFO L87 Difference]: Start difference. First operand 404 states and 619 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 11:12:54,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:54,749 INFO L93 Difference]: Finished difference Result 1080 states and 1685 transitions. [2022-11-16 11:12:54,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:12:54,751 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 11:12:54,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:54,755 INFO L225 Difference]: With dead ends: 1080 [2022-11-16 11:12:54,755 INFO L226 Difference]: Without dead ends: 710 [2022-11-16 11:12:54,758 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 11:12:54,766 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 70 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:54,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 285 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:12:54,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-11-16 11:12:54,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 708. [2022-11-16 11:12:54,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 707 states have (on average 1.5431400282885432) internal successors, (1091), 707 states have internal predecessors, (1091), 0 states have call successors, (0), 0 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 11:12:54,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1091 transitions. [2022-11-16 11:12:54,858 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1091 transitions. Word has length 62 [2022-11-16 11:12:54,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:54,861 INFO L495 AbstractCegarLoop]: Abstraction has 708 states and 1091 transitions. [2022-11-16 11:12:54,861 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 11:12:54,862 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1091 transitions. [2022-11-16 11:12:54,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 11:12:54,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:54,868 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 11:12:54,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:12:54,869 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:54,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:54,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1910647641, now seen corresponding path program 1 times [2022-11-16 11:12:54,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:54,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154260091] [2022-11-16 11:12:54,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:54,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:54,997 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 11:12:54,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:54,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154260091] [2022-11-16 11:12:54,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154260091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:54,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:54,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:12:54,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657781396] [2022-11-16 11:12:54,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:55,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:55,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:55,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:55,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:12:55,001 INFO L87 Difference]: Start difference. First operand 708 states and 1091 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 11:12:55,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:55,173 INFO L93 Difference]: Finished difference Result 1928 states and 2997 transitions. [2022-11-16 11:12:55,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:12:55,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 11:12:55,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:55,179 INFO L225 Difference]: With dead ends: 1928 [2022-11-16 11:12:55,179 INFO L226 Difference]: Without dead ends: 1254 [2022-11-16 11:12:55,181 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 11:12:55,181 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 65 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:55,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 281 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:12:55,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-11-16 11:12:55,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1252. [2022-11-16 11:12:55,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 1.5371702637889688) internal successors, (1923), 1251 states have internal predecessors, (1923), 0 states have call successors, (0), 0 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 11:12:55,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1923 transitions. [2022-11-16 11:12:55,338 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1923 transitions. Word has length 63 [2022-11-16 11:12:55,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:55,339 INFO L495 AbstractCegarLoop]: Abstraction has 1252 states and 1923 transitions. [2022-11-16 11:12:55,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 11:12:55,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1923 transitions. [2022-11-16 11:12:55,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-16 11:12:55,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:55,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:55,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:12:55,344 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:55,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:55,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2007440880, now seen corresponding path program 1 times [2022-11-16 11:12:55,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:55,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631128223] [2022-11-16 11:12:55,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:55,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:55,551 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 11:12:55,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:55,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631128223] [2022-11-16 11:12:55,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631128223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:55,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:55,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:12:55,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885256821] [2022-11-16 11:12:55,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:55,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:12:55,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:55,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:12:55,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:12:55,554 INFO L87 Difference]: Start difference. First operand 1252 states and 1923 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:57,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:57,345 INFO L93 Difference]: Finished difference Result 13432 states and 20813 transitions. [2022-11-16 11:12:57,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:12:57,345 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-16 11:12:57,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:57,389 INFO L225 Difference]: With dead ends: 13432 [2022-11-16 11:12:57,390 INFO L226 Difference]: Without dead ends: 12214 [2022-11-16 11:12:57,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:12:57,397 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 1155 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:57,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 1423 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:12:57,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12214 states. [2022-11-16 11:12:58,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12214 to 2468. [2022-11-16 11:12:58,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2467 states have (on average 1.5188488042156465) internal successors, (3747), 2467 states have internal predecessors, (3747), 0 states have call successors, (0), 0 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 11:12:58,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3747 transitions. [2022-11-16 11:12:58,062 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3747 transitions. Word has length 64 [2022-11-16 11:12:58,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:58,063 INFO L495 AbstractCegarLoop]: Abstraction has 2468 states and 3747 transitions. [2022-11-16 11:12:58,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:58,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3747 transitions. [2022-11-16 11:12:58,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 11:12:58,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:58,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:58,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:12:58,065 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:58,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:58,066 INFO L85 PathProgramCache]: Analyzing trace with hash -190448501, now seen corresponding path program 1 times [2022-11-16 11:12:58,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:58,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810871936] [2022-11-16 11:12:58,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:58,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:58,462 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 11:12:58,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:58,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810871936] [2022-11-16 11:12:58,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810871936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:58,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:58,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:12:58,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542009488] [2022-11-16 11:12:58,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:58,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:12:58,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:58,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:12:58,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:12:58,465 INFO L87 Difference]: Start difference. First operand 2468 states and 3747 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:59,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:59,112 INFO L93 Difference]: Finished difference Result 4904 states and 7461 transitions. [2022-11-16 11:12:59,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:12:59,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-16 11:12:59,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:59,121 INFO L225 Difference]: With dead ends: 4904 [2022-11-16 11:12:59,121 INFO L226 Difference]: Without dead ends: 2470 [2022-11-16 11:12:59,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:12:59,125 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 251 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:59,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 582 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:12:59,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2022-11-16 11:12:59,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2468. [2022-11-16 11:12:59,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2467 states have (on average 1.5058775841102554) internal successors, (3715), 2467 states have internal predecessors, (3715), 0 states have call successors, (0), 0 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 11:12:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3715 transitions. [2022-11-16 11:12:59,570 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3715 transitions. Word has length 66 [2022-11-16 11:12:59,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:59,571 INFO L495 AbstractCegarLoop]: Abstraction has 2468 states and 3715 transitions. [2022-11-16 11:12:59,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:59,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3715 transitions. [2022-11-16 11:12:59,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 11:12:59,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:59,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:59,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:12:59,572 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:59,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:59,573 INFO L85 PathProgramCache]: Analyzing trace with hash -211451156, now seen corresponding path program 1 times [2022-11-16 11:12:59,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:59,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669171361] [2022-11-16 11:12:59,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:59,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:59,638 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 11:12:59,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:59,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669171361] [2022-11-16 11:12:59,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669171361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:59,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:59,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:12:59,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335797655] [2022-11-16 11:12:59,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:59,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:59,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:59,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:59,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:12:59,640 INFO L87 Difference]: Start difference. First operand 2468 states and 3715 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:00,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:00,201 INFO L93 Difference]: Finished difference Result 6074 states and 9159 transitions. [2022-11-16 11:13:00,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:00,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-16 11:13:00,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:00,215 INFO L225 Difference]: With dead ends: 6074 [2022-11-16 11:13:00,215 INFO L226 Difference]: Without dead ends: 3640 [2022-11-16 11:13:00,219 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 11:13:00,220 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 56 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 250 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 11:13:00,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 250 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:13:00,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2022-11-16 11:13:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3638. [2022-11-16 11:13:00,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 1.4927137750893593) internal successors, (5429), 3637 states have internal predecessors, (5429), 0 states have call successors, (0), 0 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 11:13:00,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5429 transitions. [2022-11-16 11:13:00,854 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5429 transitions. Word has length 66 [2022-11-16 11:13:00,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:00,854 INFO L495 AbstractCegarLoop]: Abstraction has 3638 states and 5429 transitions. [2022-11-16 11:13:00,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:00,855 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5429 transitions. [2022-11-16 11:13:00,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 11:13:00,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:00,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:00,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:13:00,856 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:00,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:00,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1610845590, now seen corresponding path program 1 times [2022-11-16 11:13:00,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:00,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267622897] [2022-11-16 11:13:00,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:00,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:00,982 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 11:13:00,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:00,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267622897] [2022-11-16 11:13:00,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267622897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:00,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:00,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:13:00,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540200891] [2022-11-16 11:13:00,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:00,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:13:00,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:00,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:13:00,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:00,985 INFO L87 Difference]: Start difference. First operand 3638 states and 5429 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:01,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:01,696 INFO L93 Difference]: Finished difference Result 7240 states and 10822 transitions. [2022-11-16 11:13:01,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:13:01,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-16 11:13:01,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:01,728 INFO L225 Difference]: With dead ends: 7240 [2022-11-16 11:13:01,735 INFO L226 Difference]: Without dead ends: 3638 [2022-11-16 11:13:01,741 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 11:13:01,742 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 339 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:01,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 82 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:13:01,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3638 states. [2022-11-16 11:13:02,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3638 to 3638. [2022-11-16 11:13:02,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 1.4751168545504536) internal successors, (5365), 3637 states have internal predecessors, (5365), 0 states have call successors, (0), 0 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 11:13:02,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5365 transitions. [2022-11-16 11:13:02,379 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5365 transitions. Word has length 67 [2022-11-16 11:13:02,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:02,380 INFO L495 AbstractCegarLoop]: Abstraction has 3638 states and 5365 transitions. [2022-11-16 11:13:02,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:02,380 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5365 transitions. [2022-11-16 11:13:02,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 11:13:02,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:02,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:02,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:13:02,382 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:02,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:02,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1242574363, now seen corresponding path program 1 times [2022-11-16 11:13:02,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:02,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622431305] [2022-11-16 11:13:02,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:02,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:02,483 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 11:13:02,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:02,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622431305] [2022-11-16 11:13:02,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622431305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:02,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:02,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:13:02,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473550121] [2022-11-16 11:13:02,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:02,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:13:02,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:02,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:13:02,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:02,486 INFO L87 Difference]: Start difference. First operand 3638 states and 5365 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:03,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:03,121 INFO L93 Difference]: Finished difference Result 7240 states and 10694 transitions. [2022-11-16 11:13:03,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:13:03,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-16 11:13:03,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:03,137 INFO L225 Difference]: With dead ends: 7240 [2022-11-16 11:13:03,138 INFO L226 Difference]: Without dead ends: 3638 [2022-11-16 11:13:03,143 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 11:13:03,144 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 284 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:03,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 114 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:13:03,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3638 states. [2022-11-16 11:13:03,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3638 to 3638. [2022-11-16 11:13:03,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 1.4619191641462743) internal successors, (5317), 3637 states have internal predecessors, (5317), 0 states have call successors, (0), 0 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 11:13:03,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5317 transitions. [2022-11-16 11:13:03,995 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5317 transitions. Word has length 67 [2022-11-16 11:13:03,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:03,995 INFO L495 AbstractCegarLoop]: Abstraction has 3638 states and 5317 transitions. [2022-11-16 11:13:03,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:03,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5317 transitions. [2022-11-16 11:13:03,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 11:13:03,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:03,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:03,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:13:03,998 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:03,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:03,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1771864864, now seen corresponding path program 1 times [2022-11-16 11:13:03,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:03,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347343861] [2022-11-16 11:13:03,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:04,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:04,126 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 11:13:04,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:04,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347343861] [2022-11-16 11:13:04,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347343861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:04,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:04,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:13:04,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577290692] [2022-11-16 11:13:04,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:04,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:13:04,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:04,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:13:04,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:04,129 INFO L87 Difference]: Start difference. First operand 3638 states and 5317 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:04,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:04,853 INFO L93 Difference]: Finished difference Result 7240 states and 10598 transitions. [2022-11-16 11:13:04,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:13:04,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-16 11:13:04,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:04,863 INFO L225 Difference]: With dead ends: 7240 [2022-11-16 11:13:04,863 INFO L226 Difference]: Without dead ends: 3638 [2022-11-16 11:13:04,868 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 11:13:04,869 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 307 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:04,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 98 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:13:04,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3638 states. [2022-11-16 11:13:05,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3638 to 3638. [2022-11-16 11:13:05,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 1.448721473742095) internal successors, (5269), 3637 states have internal predecessors, (5269), 0 states have call successors, (0), 0 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 11:13:05,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5269 transitions. [2022-11-16 11:13:05,565 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5269 transitions. Word has length 67 [2022-11-16 11:13:05,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:05,565 INFO L495 AbstractCegarLoop]: Abstraction has 3638 states and 5269 transitions. [2022-11-16 11:13:05,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:05,566 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5269 transitions. [2022-11-16 11:13:05,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 11:13:05,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:05,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:05,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:13:05,567 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:05,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:05,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1643779557, now seen corresponding path program 1 times [2022-11-16 11:13:05,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:05,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664735237] [2022-11-16 11:13:05,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:05,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:05,777 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 11:13:05,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:05,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664735237] [2022-11-16 11:13:05,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664735237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:05,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:05,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:13:05,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812450499] [2022-11-16 11:13:05,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:05,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:13:05,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:05,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:13:05,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:05,780 INFO L87 Difference]: Start difference. First operand 3638 states and 5269 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:07,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:07,070 INFO L93 Difference]: Finished difference Result 6558 states and 9468 transitions. [2022-11-16 11:13:07,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:13:07,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-16 11:13:07,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:07,084 INFO L225 Difference]: With dead ends: 6558 [2022-11-16 11:13:07,085 INFO L226 Difference]: Without dead ends: 6556 [2022-11-16 11:13:07,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:13:07,088 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 168 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:07,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 569 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:13:07,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6556 states. [2022-11-16 11:13:07,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6556 to 3766. [2022-11-16 11:13:07,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3766 states, 3765 states have (on average 1.4292164674634795) internal successors, (5381), 3765 states have internal predecessors, (5381), 0 states have call successors, (0), 0 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 11:13:07,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 5381 transitions. [2022-11-16 11:13:07,678 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 5381 transitions. Word has length 67 [2022-11-16 11:13:07,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:07,679 INFO L495 AbstractCegarLoop]: Abstraction has 3766 states and 5381 transitions. [2022-11-16 11:13:07,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:07,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 5381 transitions. [2022-11-16 11:13:07,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:13:07,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:07,682 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:07,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:13:07,682 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:07,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:07,683 INFO L85 PathProgramCache]: Analyzing trace with hash 2083961666, now seen corresponding path program 1 times [2022-11-16 11:13:07,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:07,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542801292] [2022-11-16 11:13:07,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:07,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:13:07,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:07,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542801292] [2022-11-16 11:13:07,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542801292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:07,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:07,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:13:07,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362124254] [2022-11-16 11:13:07,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:07,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:13:07,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:07,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:13:07,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:13:07,858 INFO L87 Difference]: Start difference. First operand 3766 states and 5381 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 11:13:11,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:11,513 INFO L93 Difference]: Finished difference Result 23122 states and 33083 transitions. [2022-11-16 11:13:11,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:13:11,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 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 93 [2022-11-16 11:13:11,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:11,564 INFO L225 Difference]: With dead ends: 23122 [2022-11-16 11:13:11,565 INFO L226 Difference]: Without dead ends: 19392 [2022-11-16 11:13:11,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:13:11,575 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 788 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:11,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 872 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:13:11,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19392 states. [2022-11-16 11:13:12,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19392 to 7494. [2022-11-16 11:13:12,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7494 states, 7493 states have (on average 1.4249299346056319) internal successors, (10677), 7493 states have internal predecessors, (10677), 0 states have call successors, (0), 0 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 11:13:12,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7494 states to 7494 states and 10677 transitions. [2022-11-16 11:13:12,926 INFO L78 Accepts]: Start accepts. Automaton has 7494 states and 10677 transitions. Word has length 93 [2022-11-16 11:13:12,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:12,927 INFO L495 AbstractCegarLoop]: Abstraction has 7494 states and 10677 transitions. [2022-11-16 11:13:12,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 11:13:12,927 INFO L276 IsEmpty]: Start isEmpty. Operand 7494 states and 10677 transitions. [2022-11-16 11:13:12,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:13:12,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:12,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:12,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:13:12,931 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:12,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:12,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1513365710, now seen corresponding path program 1 times [2022-11-16 11:13:12,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:12,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715859043] [2022-11-16 11:13:12,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:12,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:13:13,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:13,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715859043] [2022-11-16 11:13:13,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715859043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:13,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:13,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:13:13,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050692796] [2022-11-16 11:13:13,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:13,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:13:13,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:13,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:13:13,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:13:13,138 INFO L87 Difference]: Start difference. First operand 7494 states and 10677 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 11:13:17,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:17,263 INFO L93 Difference]: Finished difference Result 26850 states and 38379 transitions. [2022-11-16 11:13:17,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:13:17,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 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 93 [2022-11-16 11:13:17,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:17,320 INFO L225 Difference]: With dead ends: 26850 [2022-11-16 11:13:17,320 INFO L226 Difference]: Without dead ends: 23120 [2022-11-16 11:13:17,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:13:17,331 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 841 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:17,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 853 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:13:17,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23120 states. [2022-11-16 11:13:19,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23120 to 13094. [2022-11-16 11:13:19,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13094 states, 13093 states have (on average 1.4191552738104332) internal successors, (18581), 13093 states have internal predecessors, (18581), 0 states have call successors, (0), 0 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 11:13:19,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13094 states to 13094 states and 18581 transitions. [2022-11-16 11:13:19,865 INFO L78 Accepts]: Start accepts. Automaton has 13094 states and 18581 transitions. Word has length 93 [2022-11-16 11:13:19,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:19,866 INFO L495 AbstractCegarLoop]: Abstraction has 13094 states and 18581 transitions. [2022-11-16 11:13:19,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 11:13:19,866 INFO L276 IsEmpty]: Start isEmpty. Operand 13094 states and 18581 transitions. [2022-11-16 11:13:19,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:13:19,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:19,870 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:19,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:13:19,871 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:19,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:19,871 INFO L85 PathProgramCache]: Analyzing trace with hash 359419604, now seen corresponding path program 1 times [2022-11-16 11:13:19,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:19,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254622120] [2022-11-16 11:13:19,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:19,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:20,060 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:13:20,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:20,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254622120] [2022-11-16 11:13:20,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254622120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:20,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:20,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:13:20,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537916392] [2022-11-16 11:13:20,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:20,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:13:20,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:20,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:13:20,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:13:20,063 INFO L87 Difference]: Start difference. First operand 13094 states and 18581 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:25,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:25,969 INFO L93 Difference]: Finished difference Result 30578 states and 43675 transitions. [2022-11-16 11:13:25,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:13:25,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-11-16 11:13:25,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:26,035 INFO L225 Difference]: With dead ends: 30578 [2022-11-16 11:13:26,035 INFO L226 Difference]: Without dead ends: 26848 [2022-11-16 11:13:26,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:13:26,047 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 782 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:26,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 890 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:13:26,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26848 states. [2022-11-16 11:13:29,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26848 to 16822. [2022-11-16 11:13:29,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16822 states, 16821 states have (on average 1.4194756554307115) internal successors, (23877), 16821 states have internal predecessors, (23877), 0 states have call successors, (0), 0 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 11:13:30,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16822 states to 16822 states and 23877 transitions. [2022-11-16 11:13:30,025 INFO L78 Accepts]: Start accepts. Automaton has 16822 states and 23877 transitions. Word has length 93 [2022-11-16 11:13:30,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:30,026 INFO L495 AbstractCegarLoop]: Abstraction has 16822 states and 23877 transitions. [2022-11-16 11:13:30,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:30,026 INFO L276 IsEmpty]: Start isEmpty. Operand 16822 states and 23877 transitions. [2022-11-16 11:13:30,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:13:30,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:30,032 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:30,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:13:30,032 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:30,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:30,033 INFO L85 PathProgramCache]: Analyzing trace with hash 655465032, now seen corresponding path program 1 times [2022-11-16 11:13:30,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:30,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960296884] [2022-11-16 11:13:30,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:30,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:30,216 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:13:30,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:30,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960296884] [2022-11-16 11:13:30,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960296884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:30,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:30,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:13:30,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477147650] [2022-11-16 11:13:30,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:30,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:13:30,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:30,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:13:30,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:13:30,219 INFO L87 Difference]: Start difference. First operand 16822 states and 23877 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 11:13:36,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:36,299 INFO L93 Difference]: Finished difference Result 34306 states and 48971 transitions. [2022-11-16 11:13:36,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:13:36,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 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 93 [2022-11-16 11:13:36,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:36,354 INFO L225 Difference]: With dead ends: 34306 [2022-11-16 11:13:36,355 INFO L226 Difference]: Without dead ends: 30576 [2022-11-16 11:13:36,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:13:36,370 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 725 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:36,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 978 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:13:36,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30576 states. [2022-11-16 11:13:40,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30576 to 20550. [2022-11-16 11:13:40,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20550 states, 20549 states have (on average 1.4196797897707918) internal successors, (29173), 20549 states have internal predecessors, (29173), 0 states have call successors, (0), 0 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 11:13:40,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20550 states to 20550 states and 29173 transitions. [2022-11-16 11:13:40,778 INFO L78 Accepts]: Start accepts. Automaton has 20550 states and 29173 transitions. Word has length 93 [2022-11-16 11:13:40,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:40,779 INFO L495 AbstractCegarLoop]: Abstraction has 20550 states and 29173 transitions. [2022-11-16 11:13:40,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 11:13:40,779 INFO L276 IsEmpty]: Start isEmpty. Operand 20550 states and 29173 transitions. [2022-11-16 11:13:40,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 11:13:40,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:40,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:40,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:13:40,785 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:40,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:40,786 INFO L85 PathProgramCache]: Analyzing trace with hash -235568196, now seen corresponding path program 1 times [2022-11-16 11:13:40,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:40,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35570047] [2022-11-16 11:13:40,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:40,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:40,980 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:13:40,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:40,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35570047] [2022-11-16 11:13:40,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35570047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:40,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:40,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:13:40,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001602345] [2022-11-16 11:13:40,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:40,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:13:40,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:40,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:13:40,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:13:40,983 INFO L87 Difference]: Start difference. First operand 20550 states and 29173 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 11:13:48,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:48,950 INFO L93 Difference]: Finished difference Result 35698 states and 51003 transitions. [2022-11-16 11:13:48,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:13:48,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 93 [2022-11-16 11:13:48,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:49,005 INFO L225 Difference]: With dead ends: 35698 [2022-11-16 11:13:49,005 INFO L226 Difference]: Without dead ends: 33136 [2022-11-16 11:13:49,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:13:49,015 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 787 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:49,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1016 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:13:49,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33136 states. [2022-11-16 11:13:54,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33136 to 23110. [2022-11-16 11:13:54,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23110 states, 23109 states have (on average 1.4216539010775022) internal successors, (32853), 23109 states have internal predecessors, (32853), 0 states have call successors, (0), 0 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 11:13:54,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23110 states to 23110 states and 32853 transitions. [2022-11-16 11:13:54,089 INFO L78 Accepts]: Start accepts. Automaton has 23110 states and 32853 transitions. Word has length 93 [2022-11-16 11:13:54,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:54,090 INFO L495 AbstractCegarLoop]: Abstraction has 23110 states and 32853 transitions. [2022-11-16 11:13:54,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 11:13:54,090 INFO L276 IsEmpty]: Start isEmpty. Operand 23110 states and 32853 transitions. [2022-11-16 11:13:54,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-16 11:13:54,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:54,096 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:54,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:13:54,096 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:54,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:54,097 INFO L85 PathProgramCache]: Analyzing trace with hash -2095026606, now seen corresponding path program 1 times [2022-11-16 11:13:54,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:54,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135702330] [2022-11-16 11:13:54,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:54,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:54,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:54,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135702330] [2022-11-16 11:13:54,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135702330] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:13:54,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205570930] [2022-11-16 11:13:54,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:54,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:13:54,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e09370-3002-47ac-93a3-92753b4e8957/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:13:54,739 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e09370-3002-47ac-93a3-92753b4e8957/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:13:54,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2e09370-3002-47ac-93a3-92753b4e8957/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:13:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:54,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 11:13:54,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:13:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:55,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:13:55,933 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:55,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205570930] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:13:55,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:13:55,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 22 [2022-11-16 11:13:55,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79367609] [2022-11-16 11:13:55,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:13:55,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:13:55,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:55,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:13:55,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:13:55,937 INFO L87 Difference]: Start difference. First operand 23110 states and 32853 transitions. Second operand has 22 states, 22 states have (on average 12.363636363636363) internal successors, (272), 22 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)