./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92069d5b-4e42-4e14-bcae-e2395cf5b74e/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92069d5b-4e42-4e14-bcae-e2395cf5b74e/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92069d5b-4e42-4e14-bcae-e2395cf5b74e/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92069d5b-4e42-4e14-bcae-e2395cf5b74e/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92069d5b-4e42-4e14-bcae-e2395cf5b74e/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92069d5b-4e42-4e14-bcae-e2395cf5b74e/bin/uautomizer-vX5HgA9Q3a --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 93af4e6a9c0eb04ce4865a35985b5a12937072c2a8c22ec9da868c5c828002bb --- 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-b5237d8 [2022-11-21 16:57:12,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:57:12,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:57:12,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:57:12,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:57:12,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:57:12,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:57:12,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:57:12,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:57:12,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:57:12,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:57:12,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:57:12,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:57:12,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:57:12,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:57:12,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:57:12,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:57:12,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:57:12,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:57:12,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:57:12,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:57:12,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:57:12,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:57:12,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:57:12,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:57:12,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:57:12,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:57:12,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:57:12,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:57:12,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:57:12,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:57:12,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:57:12,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:57:12,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:57:12,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:57:12,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:57:12,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:57:12,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:57:12,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:57:12,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:57:12,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:57:12,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92069d5b-4e42-4e14-bcae-e2395cf5b74e/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:57:12,606 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:57:12,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:57:12,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:57:12,607 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:57:12,608 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:57:12,608 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:57:12,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:57:12,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:57:12,609 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:57:12,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:57:12,610 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:57:12,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:57:12,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:57:12,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:57:12,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:57:12,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:57:12,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:57:12,611 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:57:12,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:57:12,612 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:57:12,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:57:12,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:57:12,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:57:12,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:57:12,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:57:12,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:57:12,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:57:12,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:57:12,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:57:12,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:57:12,614 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:57:12,615 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:57:12,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:57:12,615 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_92069d5b-4e42-4e14-bcae-e2395cf5b74e/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92069d5b-4e42-4e14-bcae-e2395cf5b74e/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93af4e6a9c0eb04ce4865a35985b5a12937072c2a8c22ec9da868c5c828002bb [2022-11-21 16:57:12,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:57:12,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:57:12,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:57:12,960 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:57:12,960 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:57:12,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92069d5b-4e42-4e14-bcae-e2395cf5b74e/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-21 16:57:16,666 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:57:17,035 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:57:17,036 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92069d5b-4e42-4e14-bcae-e2395cf5b74e/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-21 16:57:17,049 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92069d5b-4e42-4e14-bcae-e2395cf5b74e/bin/uautomizer-vX5HgA9Q3a/data/fc3a3f1f9/01470ff857f8453e8b6edc983e2dcb65/FLAG027b497b7 [2022-11-21 16:57:17,068 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92069d5b-4e42-4e14-bcae-e2395cf5b74e/bin/uautomizer-vX5HgA9Q3a/data/fc3a3f1f9/01470ff857f8453e8b6edc983e2dcb65 [2022-11-21 16:57:17,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:57:17,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:57:17,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:57:17,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:57:17,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:57:17,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:57:17" (1/1) ... [2022-11-21 16:57:17,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510b32d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:57:17, skipping insertion in model container [2022-11-21 16:57:17,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:57:17" (1/1) ... [2022-11-21 16:57:17,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:57:17,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:57:17,643 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92069d5b-4e42-4e14-bcae-e2395cf5b74e/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10668,10681] [2022-11-21 16:57:17,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:57:17,747 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:57:17,854 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92069d5b-4e42-4e14-bcae-e2395cf5b74e/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10668,10681] [2022-11-21 16:57:17,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:57:17,952 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:57:17,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:57:17 WrapperNode [2022-11-21 16:57:17,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:57:17,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:57:17,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:57:17,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:57:17,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:57:17" (1/1) ... [2022-11-21 16:57:17,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:57:17" (1/1) ... [2022-11-21 16:57:18,045 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 952 [2022-11-21 16:57:18,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:57:18,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:57:18,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:57:18,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:57:18,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:57:17" (1/1) ... [2022-11-21 16:57:18,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:57:17" (1/1) ... [2022-11-21 16:57:18,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:57:17" (1/1) ... [2022-11-21 16:57:18,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:57:17" (1/1) ... [2022-11-21 16:57:18,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:57:17" (1/1) ... [2022-11-21 16:57:18,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:57:17" (1/1) ... [2022-11-21 16:57:18,099 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:57:17" (1/1) ... [2022-11-21 16:57:18,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:57:17" (1/1) ... [2022-11-21 16:57:18,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:57:18,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:57:18,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:57:18,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:57:18,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:57:17" (1/1) ... [2022-11-21 16:57:18,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:57:18,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92069d5b-4e42-4e14-bcae-e2395cf5b74e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:57:18,199 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92069d5b-4e42-4e14-bcae-e2395cf5b74e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:57:18,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92069d5b-4e42-4e14-bcae-e2395cf5b74e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:57:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:57:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:57:18,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:57:18,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:57:18,476 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:57:18,478 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:57:19,617 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:57:19,629 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:57:19,643 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 16:57:19,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:57:19 BoogieIcfgContainer [2022-11-21 16:57:19,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:57:19,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:57:19,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:57:19,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:57:19,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:57:17" (1/3) ... [2022-11-21 16:57:19,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511f1647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:57:19, skipping insertion in model container [2022-11-21 16:57:19,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:57:17" (2/3) ... [2022-11-21 16:57:19,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511f1647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:57:19, skipping insertion in model container [2022-11-21 16:57:19,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:57:19" (3/3) ... [2022-11-21 16:57:19,675 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-21 16:57:19,703 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:57:19,704 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:57:19,791 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:57:19,800 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;@7c5cf7e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:57:19,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:57:19,809 INFO L276 IsEmpty]: Start isEmpty. Operand has 247 states, 245 states have (on average 1.7591836734693878) internal successors, (431), 246 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:19,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-21 16:57:19,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:19,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:19,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:19,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:19,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1005429677, now seen corresponding path program 1 times [2022-11-21 16:57:19,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:19,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028675579] [2022-11-21 16:57:19,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:19,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:20,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:20,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028675579] [2022-11-21 16:57:20,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028675579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:20,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:20,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:57:20,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404462313] [2022-11-21 16:57:20,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:20,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:57:20,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:20,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:57:20,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:57:20,972 INFO L87 Difference]: Start difference. First operand has 247 states, 245 states have (on average 1.7591836734693878) internal successors, (431), 246 states have internal predecessors, (431), 0 states have call successors, (0), 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 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:21,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:21,341 INFO L93 Difference]: Finished difference Result 714 states and 1248 transitions. [2022-11-21 16:57:21,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:57:21,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2022-11-21 16:57:21,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:21,376 INFO L225 Difference]: With dead ends: 714 [2022-11-21 16:57:21,376 INFO L226 Difference]: Without dead ends: 470 [2022-11-21 16:57:21,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:57:21,396 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 1005 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:21,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 993 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:57:21,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-11-21 16:57:21,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 468. [2022-11-21 16:57:21,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 467 states have (on average 1.4753747323340471) internal successors, (689), 467 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:21,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 689 transitions. [2022-11-21 16:57:21,515 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 689 transitions. Word has length 101 [2022-11-21 16:57:21,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:21,516 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 689 transitions. [2022-11-21 16:57:21,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:21,517 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 689 transitions. [2022-11-21 16:57:21,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-21 16:57:21,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:21,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:21,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:57:21,521 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:21,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:21,522 INFO L85 PathProgramCache]: Analyzing trace with hash -769716679, now seen corresponding path program 1 times [2022-11-21 16:57:21,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:21,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711807110] [2022-11-21 16:57:21,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:21,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:21,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:21,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711807110] [2022-11-21 16:57:21,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711807110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:21,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:21,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:57:21,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998967284] [2022-11-21 16:57:21,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:21,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:57:21,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:21,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:57:21,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:57:21,657 INFO L87 Difference]: Start difference. First operand 468 states and 689 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:21,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:21,753 INFO L93 Difference]: Finished difference Result 1366 states and 2005 transitions. [2022-11-21 16:57:21,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:57:21,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-11-21 16:57:21,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:21,759 INFO L225 Difference]: With dead ends: 1366 [2022-11-21 16:57:21,760 INFO L226 Difference]: Without dead ends: 926 [2022-11-21 16:57:21,762 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 [2022-11-21 16:57:21,764 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 352 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:21,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 1041 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:57:21,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-11-21 16:57:21,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 470. [2022-11-21 16:57:21,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 1.4733475479744136) internal successors, (691), 469 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:21,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 691 transitions. [2022-11-21 16:57:21,868 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 691 transitions. Word has length 102 [2022-11-21 16:57:21,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:21,870 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 691 transitions. [2022-11-21 16:57:21,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:21,871 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 691 transitions. [2022-11-21 16:57:21,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-21 16:57:21,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:21,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:21,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:57:21,887 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:21,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:21,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1142488916, now seen corresponding path program 1 times [2022-11-21 16:57:21,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:21,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269830139] [2022-11-21 16:57:21,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:21,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:22,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:22,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269830139] [2022-11-21 16:57:22,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269830139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:22,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:22,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:57:22,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047066892] [2022-11-21 16:57:22,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:22,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:57:22,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:22,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:57:22,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:57:22,166 INFO L87 Difference]: Start difference. First operand 470 states and 691 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:22,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:22,326 INFO L93 Difference]: Finished difference Result 977 states and 1492 transitions. [2022-11-21 16:57:22,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:57:22,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-11-21 16:57:22,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:22,331 INFO L225 Difference]: With dead ends: 977 [2022-11-21 16:57:22,332 INFO L226 Difference]: Without dead ends: 634 [2022-11-21 16:57:22,333 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 [2022-11-21 16:57:22,335 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 233 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:22,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 745 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:57:22,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-11-21 16:57:22,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 618. [2022-11-21 16:57:22,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 617 states have (on average 1.5153970826580228) internal successors, (935), 617 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:22,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 935 transitions. [2022-11-21 16:57:22,444 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 935 transitions. Word has length 103 [2022-11-21 16:57:22,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:22,445 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 935 transitions. [2022-11-21 16:57:22,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:22,445 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 935 transitions. [2022-11-21 16:57:22,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-21 16:57:22,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:22,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:22,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:57:22,448 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:22,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:22,448 INFO L85 PathProgramCache]: Analyzing trace with hash -362955380, now seen corresponding path program 1 times [2022-11-21 16:57:22,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:22,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716457033] [2022-11-21 16:57:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:22,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:22,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:22,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716457033] [2022-11-21 16:57:22,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716457033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:22,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:22,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:57:22,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759516801] [2022-11-21 16:57:22,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:22,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:57:22,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:22,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:57:22,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:57:22,833 INFO L87 Difference]: Start difference. First operand 618 states and 935 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:23,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:23,129 INFO L93 Difference]: Finished difference Result 1766 states and 2661 transitions. [2022-11-21 16:57:23,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:57:23,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-11-21 16:57:23,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:23,139 INFO L225 Difference]: With dead ends: 1766 [2022-11-21 16:57:23,139 INFO L226 Difference]: Without dead ends: 1178 [2022-11-21 16:57:23,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:57:23,155 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 760 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:23,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 858 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:57:23,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2022-11-21 16:57:23,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1176. [2022-11-21 16:57:23,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1175 states have (on average 1.4978723404255319) internal successors, (1760), 1175 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:23,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1760 transitions. [2022-11-21 16:57:23,387 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1760 transitions. Word has length 103 [2022-11-21 16:57:23,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:23,389 INFO L495 AbstractCegarLoop]: Abstraction has 1176 states and 1760 transitions. [2022-11-21 16:57:23,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:23,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1760 transitions. [2022-11-21 16:57:23,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-21 16:57:23,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:23,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:23,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:57:23,393 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:23,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:23,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1797210952, now seen corresponding path program 1 times [2022-11-21 16:57:23,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:23,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43126150] [2022-11-21 16:57:23,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:23,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:23,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:23,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:23,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43126150] [2022-11-21 16:57:23,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43126150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:23,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:23,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:57:23,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615577604] [2022-11-21 16:57:23,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:23,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:57:23,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:23,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:57:23,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:57:23,479 INFO L87 Difference]: Start difference. First operand 1176 states and 1760 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:23,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:23,923 INFO L93 Difference]: Finished difference Result 3452 states and 5160 transitions. [2022-11-21 16:57:23,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:57:23,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-11-21 16:57:23,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:23,936 INFO L225 Difference]: With dead ends: 3452 [2022-11-21 16:57:23,936 INFO L226 Difference]: Without dead ends: 2320 [2022-11-21 16:57:23,938 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 [2022-11-21 16:57:23,942 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 336 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:23,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 1046 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:57:23,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2022-11-21 16:57:24,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 1180. [2022-11-21 16:57:24,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1179 states have (on average 1.4961832061068703) internal successors, (1764), 1179 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:24,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1764 transitions. [2022-11-21 16:57:24,182 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1764 transitions. Word has length 104 [2022-11-21 16:57:24,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:24,183 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1764 transitions. [2022-11-21 16:57:24,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:24,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1764 transitions. [2022-11-21 16:57:24,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-21 16:57:24,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:24,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:24,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:57:24,191 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:24,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:24,192 INFO L85 PathProgramCache]: Analyzing trace with hash 978474865, now seen corresponding path program 1 times [2022-11-21 16:57:24,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:24,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270069203] [2022-11-21 16:57:24,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:24,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:24,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:24,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270069203] [2022-11-21 16:57:24,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270069203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:24,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:24,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:57:24,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043757499] [2022-11-21 16:57:24,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:24,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:57:24,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:24,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:57:24,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:57:24,308 INFO L87 Difference]: Start difference. First operand 1180 states and 1764 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:24,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:24,808 INFO L93 Difference]: Finished difference Result 2640 states and 4114 transitions. [2022-11-21 16:57:24,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:57:24,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-11-21 16:57:24,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:24,816 INFO L225 Difference]: With dead ends: 2640 [2022-11-21 16:57:24,817 INFO L226 Difference]: Without dead ends: 1744 [2022-11-21 16:57:24,819 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 [2022-11-21 16:57:24,820 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 241 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:24,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 729 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:57:24,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2022-11-21 16:57:25,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1690. [2022-11-21 16:57:25,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1689 states have (on average 1.5429248075784487) internal successors, (2606), 1689 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:25,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2606 transitions. [2022-11-21 16:57:25,237 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2606 transitions. Word has length 105 [2022-11-21 16:57:25,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:25,238 INFO L495 AbstractCegarLoop]: Abstraction has 1690 states and 2606 transitions. [2022-11-21 16:57:25,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:25,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2606 transitions. [2022-11-21 16:57:25,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-21 16:57:25,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:25,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:25,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:57:25,244 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:25,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:25,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1850549439, now seen corresponding path program 1 times [2022-11-21 16:57:25,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:25,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654843044] [2022-11-21 16:57:25,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:25,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:25,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:25,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:25,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654843044] [2022-11-21 16:57:25,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654843044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:25,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:25,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:57:25,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760688012] [2022-11-21 16:57:25,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:25,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:57:25,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:25,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:57:25,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:57:25,385 INFO L87 Difference]: Start difference. First operand 1690 states and 2606 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:26,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:26,102 INFO L93 Difference]: Finished difference Result 4594 states and 7162 transitions. [2022-11-21 16:57:26,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:57:26,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-11-21 16:57:26,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:26,136 INFO L225 Difference]: With dead ends: 4594 [2022-11-21 16:57:26,136 INFO L226 Difference]: Without dead ends: 3236 [2022-11-21 16:57:26,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:57:26,139 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 280 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:26,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 980 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:57:26,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2022-11-21 16:57:26,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 3234. [2022-11-21 16:57:26,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3233 states have (on average 1.530467058459635) internal successors, (4948), 3233 states have internal predecessors, (4948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:26,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 4948 transitions. [2022-11-21 16:57:26,885 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 4948 transitions. Word has length 105 [2022-11-21 16:57:26,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:26,885 INFO L495 AbstractCegarLoop]: Abstraction has 3234 states and 4948 transitions. [2022-11-21 16:57:26,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:26,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 4948 transitions. [2022-11-21 16:57:26,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-21 16:57:26,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:26,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:26,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:57:26,890 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:26,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:26,891 INFO L85 PathProgramCache]: Analyzing trace with hash -417340030, now seen corresponding path program 1 times [2022-11-21 16:57:26,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:26,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619913485] [2022-11-21 16:57:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:26,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:27,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:27,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619913485] [2022-11-21 16:57:27,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619913485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:27,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:27,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:57:27,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257699840] [2022-11-21 16:57:27,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:27,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:57:27,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:27,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:57:27,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:57:27,273 INFO L87 Difference]: Start difference. First operand 3234 states and 4948 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:28,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:28,589 INFO L93 Difference]: Finished difference Result 8716 states and 13341 transitions. [2022-11-21 16:57:28,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:57:28,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-11-21 16:57:28,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:28,610 INFO L225 Difference]: With dead ends: 8716 [2022-11-21 16:57:28,610 INFO L226 Difference]: Without dead ends: 5519 [2022-11-21 16:57:28,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:57:28,616 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 653 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:28,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 1218 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:57:28,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2022-11-21 16:57:29,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 5517. [2022-11-21 16:57:29,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5517 states, 5516 states have (on average 1.5159535895576504) internal successors, (8362), 5516 states have internal predecessors, (8362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:29,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5517 states to 5517 states and 8362 transitions. [2022-11-21 16:57:29,841 INFO L78 Accepts]: Start accepts. Automaton has 5517 states and 8362 transitions. Word has length 105 [2022-11-21 16:57:29,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:29,842 INFO L495 AbstractCegarLoop]: Abstraction has 5517 states and 8362 transitions. [2022-11-21 16:57:29,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:29,842 INFO L276 IsEmpty]: Start isEmpty. Operand 5517 states and 8362 transitions. [2022-11-21 16:57:29,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-21 16:57:29,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:29,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:29,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:57:29,847 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:29,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:29,848 INFO L85 PathProgramCache]: Analyzing trace with hash 540693227, now seen corresponding path program 1 times [2022-11-21 16:57:29,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:29,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417824949] [2022-11-21 16:57:29,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:29,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:30,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:30,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417824949] [2022-11-21 16:57:30,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417824949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:30,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:30,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:57:30,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514050470] [2022-11-21 16:57:30,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:30,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:57:30,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:30,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:57:30,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:57:30,146 INFO L87 Difference]: Start difference. First operand 5517 states and 8362 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:31,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:31,265 INFO L93 Difference]: Finished difference Result 11296 states and 16989 transitions. [2022-11-21 16:57:31,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:57:31,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-11-21 16:57:31,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:31,292 INFO L225 Difference]: With dead ends: 11296 [2022-11-21 16:57:31,292 INFO L226 Difference]: Without dead ends: 5896 [2022-11-21 16:57:31,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:57:31,302 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 698 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:31,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 881 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:57:31,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5896 states. [2022-11-21 16:57:32,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5896 to 5741. [2022-11-21 16:57:32,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5741 states, 5740 states have (on average 1.4993031358885018) internal successors, (8606), 5740 states have internal predecessors, (8606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:32,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5741 states to 5741 states and 8606 transitions. [2022-11-21 16:57:32,376 INFO L78 Accepts]: Start accepts. Automaton has 5741 states and 8606 transitions. Word has length 105 [2022-11-21 16:57:32,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:32,376 INFO L495 AbstractCegarLoop]: Abstraction has 5741 states and 8606 transitions. [2022-11-21 16:57:32,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:32,377 INFO L276 IsEmpty]: Start isEmpty. Operand 5741 states and 8606 transitions. [2022-11-21 16:57:32,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-21 16:57:32,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:32,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:32,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:57:32,384 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:32,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:32,385 INFO L85 PathProgramCache]: Analyzing trace with hash 138743479, now seen corresponding path program 1 times [2022-11-21 16:57:32,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:32,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093547832] [2022-11-21 16:57:32,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:32,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:32,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:32,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:32,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093547832] [2022-11-21 16:57:32,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093547832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:32,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:32,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:57:32,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722783201] [2022-11-21 16:57:32,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:32,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:57:32,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:32,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:57:32,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:57:32,485 INFO L87 Difference]: Start difference. First operand 5741 states and 8606 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:34,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:34,308 INFO L93 Difference]: Finished difference Result 16497 states and 24904 transitions. [2022-11-21 16:57:34,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:57:34,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-11-21 16:57:34,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:34,371 INFO L225 Difference]: With dead ends: 16497 [2022-11-21 16:57:34,371 INFO L226 Difference]: Without dead ends: 11357 [2022-11-21 16:57:34,380 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 [2022-11-21 16:57:34,381 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 320 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:34,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 826 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:57:34,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11357 states. [2022-11-21 16:57:35,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11357 to 5757. [2022-11-21 16:57:35,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5757 states, 5756 states have (on average 1.4979152189020153) internal successors, (8622), 5756 states have internal predecessors, (8622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:35,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5757 states to 5757 states and 8622 transitions. [2022-11-21 16:57:35,516 INFO L78 Accepts]: Start accepts. Automaton has 5757 states and 8622 transitions. Word has length 106 [2022-11-21 16:57:35,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:35,517 INFO L495 AbstractCegarLoop]: Abstraction has 5757 states and 8622 transitions. [2022-11-21 16:57:35,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:35,517 INFO L276 IsEmpty]: Start isEmpty. Operand 5757 states and 8622 transitions. [2022-11-21 16:57:35,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-21 16:57:35,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:35,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:35,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:57:35,523 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:35,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:35,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2082987062, now seen corresponding path program 1 times [2022-11-21 16:57:35,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:35,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538321276] [2022-11-21 16:57:35,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:35,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:35,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:35,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:35,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538321276] [2022-11-21 16:57:35,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538321276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:35,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:35,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:57:35,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189114903] [2022-11-21 16:57:35,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:35,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:57:35,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:35,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:57:35,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:57:35,817 INFO L87 Difference]: Start difference. First operand 5757 states and 8622 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:37,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:37,315 INFO L93 Difference]: Finished difference Result 11504 states and 17230 transitions. [2022-11-21 16:57:37,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:57:37,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-11-21 16:57:37,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:37,335 INFO L225 Difference]: With dead ends: 11504 [2022-11-21 16:57:37,336 INFO L226 Difference]: Without dead ends: 5755 [2022-11-21 16:57:37,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:57:37,346 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 65 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:37,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1110 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:57:37,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5755 states. [2022-11-21 16:57:38,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5755 to 5755. [2022-11-21 16:57:38,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5755 states, 5754 states have (on average 1.4977407021202642) internal successors, (8618), 5754 states have internal predecessors, (8618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:38,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5755 states to 5755 states and 8618 transitions. [2022-11-21 16:57:38,589 INFO L78 Accepts]: Start accepts. Automaton has 5755 states and 8618 transitions. Word has length 107 [2022-11-21 16:57:38,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:38,589 INFO L495 AbstractCegarLoop]: Abstraction has 5755 states and 8618 transitions. [2022-11-21 16:57:38,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:38,590 INFO L276 IsEmpty]: Start isEmpty. Operand 5755 states and 8618 transitions. [2022-11-21 16:57:38,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-21 16:57:38,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:38,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:38,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:57:38,596 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:38,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:38,597 INFO L85 PathProgramCache]: Analyzing trace with hash 248103490, now seen corresponding path program 1 times [2022-11-21 16:57:38,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:38,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549734681] [2022-11-21 16:57:38,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:38,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:38,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:38,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:38,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549734681] [2022-11-21 16:57:38,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549734681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:38,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:38,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:57:38,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154893233] [2022-11-21 16:57:38,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:38,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:57:38,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:38,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:57:38,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:57:38,705 INFO L87 Difference]: Start difference. First operand 5755 states and 8618 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:40,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:40,121 INFO L93 Difference]: Finished difference Result 13045 states and 19796 transitions. [2022-11-21 16:57:40,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:57:40,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-11-21 16:57:40,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:40,142 INFO L225 Difference]: With dead ends: 13045 [2022-11-21 16:57:40,142 INFO L226 Difference]: Without dead ends: 8501 [2022-11-21 16:57:40,148 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 [2022-11-21 16:57:40,149 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 288 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:40,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 748 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:57:40,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8501 states. [2022-11-21 16:57:41,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8501 to 8499. [2022-11-21 16:57:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8499 states, 8498 states have (on average 1.476818074841139) internal successors, (12550), 8498 states have internal predecessors, (12550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:41,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8499 states to 8499 states and 12550 transitions. [2022-11-21 16:57:41,396 INFO L78 Accepts]: Start accepts. Automaton has 8499 states and 12550 transitions. Word has length 107 [2022-11-21 16:57:41,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:41,397 INFO L495 AbstractCegarLoop]: Abstraction has 8499 states and 12550 transitions. [2022-11-21 16:57:41,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:41,397 INFO L276 IsEmpty]: Start isEmpty. Operand 8499 states and 12550 transitions. [2022-11-21 16:57:41,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-21 16:57:41,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:41,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:41,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:57:41,405 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:41,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:41,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1043025895, now seen corresponding path program 1 times [2022-11-21 16:57:41,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:41,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435717443] [2022-11-21 16:57:41,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:41,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:41,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:41,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:41,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435717443] [2022-11-21 16:57:41,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435717443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:41,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:41,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:57:41,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296023013] [2022-11-21 16:57:41,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:41,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:57:41,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:41,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:57:41,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:57:41,508 INFO L87 Difference]: Start difference. First operand 8499 states and 12550 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:43,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:43,620 INFO L93 Difference]: Finished difference Result 18359 states and 28094 transitions. [2022-11-21 16:57:43,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:57:43,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-11-21 16:57:43,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:43,656 INFO L225 Difference]: With dead ends: 18359 [2022-11-21 16:57:43,656 INFO L226 Difference]: Without dead ends: 12642 [2022-11-21 16:57:43,666 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 [2022-11-21 16:57:43,667 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 245 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:43,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 712 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:57:43,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12642 states. [2022-11-21 16:57:45,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12642 to 12180. [2022-11-21 16:57:45,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12180 states, 12179 states have (on average 1.5104688398062238) internal successors, (18396), 12179 states have internal predecessors, (18396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:45,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12180 states to 12180 states and 18396 transitions. [2022-11-21 16:57:45,676 INFO L78 Accepts]: Start accepts. Automaton has 12180 states and 18396 transitions. Word has length 109 [2022-11-21 16:57:45,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:45,676 INFO L495 AbstractCegarLoop]: Abstraction has 12180 states and 18396 transitions. [2022-11-21 16:57:45,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:45,677 INFO L276 IsEmpty]: Start isEmpty. Operand 12180 states and 18396 transitions. [2022-11-21 16:57:45,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-21 16:57:45,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:45,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:45,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:57:45,685 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:45,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:45,685 INFO L85 PathProgramCache]: Analyzing trace with hash 211922380, now seen corresponding path program 1 times [2022-11-21 16:57:45,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:45,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678236024] [2022-11-21 16:57:45,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:45,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:45,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:45,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678236024] [2022-11-21 16:57:45,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678236024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:45,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:45,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:57:45,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774610310] [2022-11-21 16:57:45,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:45,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:57:45,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:45,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:57:45,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:57:45,855 INFO L87 Difference]: Start difference. First operand 12180 states and 18396 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:48,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:48,329 INFO L93 Difference]: Finished difference Result 23210 states and 35482 transitions. [2022-11-21 16:57:48,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:57:48,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-11-21 16:57:48,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:48,364 INFO L225 Difference]: With dead ends: 23210 [2022-11-21 16:57:48,364 INFO L226 Difference]: Without dead ends: 12180 [2022-11-21 16:57:48,379 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 [2022-11-21 16:57:48,380 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 894 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:48,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 374 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:57:48,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12180 states. [2022-11-21 16:57:51,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12180 to 12180. [2022-11-21 16:57:51,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12180 states, 12179 states have (on average 1.496838820921258) internal successors, (18230), 12179 states have internal predecessors, (18230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:51,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12180 states to 12180 states and 18230 transitions. [2022-11-21 16:57:51,064 INFO L78 Accepts]: Start accepts. Automaton has 12180 states and 18230 transitions. Word has length 110 [2022-11-21 16:57:51,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:51,064 INFO L495 AbstractCegarLoop]: Abstraction has 12180 states and 18230 transitions. [2022-11-21 16:57:51,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:51,065 INFO L276 IsEmpty]: Start isEmpty. Operand 12180 states and 18230 transitions. [2022-11-21 16:57:51,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-21 16:57:51,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:51,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:51,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 16:57:51,075 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:51,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:51,076 INFO L85 PathProgramCache]: Analyzing trace with hash 410270887, now seen corresponding path program 1 times [2022-11-21 16:57:51,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:51,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476092921] [2022-11-21 16:57:51,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:51,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:51,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:51,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476092921] [2022-11-21 16:57:51,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476092921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:51,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:51,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:57:51,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509574333] [2022-11-21 16:57:51,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:51,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:57:51,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:51,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:57:51,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:57:51,341 INFO L87 Difference]: Start difference. First operand 12180 states and 18230 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:55,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:57:55,148 INFO L93 Difference]: Finished difference Result 30759 states and 46380 transitions. [2022-11-21 16:57:55,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:57:55,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-11-21 16:57:55,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:57:55,189 INFO L225 Difference]: With dead ends: 30759 [2022-11-21 16:57:55,190 INFO L226 Difference]: Without dead ends: 18927 [2022-11-21 16:57:55,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:57:55,205 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 695 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:57:55,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 890 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:57:55,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18927 states. [2022-11-21 16:57:58,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18927 to 18925. [2022-11-21 16:57:58,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18925 states, 18924 states have (on average 1.4930247305009512) internal successors, (28254), 18924 states have internal predecessors, (28254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:58,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18925 states to 18925 states and 28254 transitions. [2022-11-21 16:57:58,717 INFO L78 Accepts]: Start accepts. Automaton has 18925 states and 28254 transitions. Word has length 110 [2022-11-21 16:57:58,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:57:58,717 INFO L495 AbstractCegarLoop]: Abstraction has 18925 states and 28254 transitions. [2022-11-21 16:57:58,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:57:58,717 INFO L276 IsEmpty]: Start isEmpty. Operand 18925 states and 28254 transitions. [2022-11-21 16:57:58,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-21 16:57:58,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:57:58,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:57:58,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 16:57:58,726 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:57:58,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:57:58,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2110822017, now seen corresponding path program 1 times [2022-11-21 16:57:58,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:57:58,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495394909] [2022-11-21 16:57:58,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:57:58,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:57:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:57:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:57:59,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:57:59,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495394909] [2022-11-21 16:57:59,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495394909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:57:59,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:57:59,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:57:59,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027701938] [2022-11-21 16:57:59,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:57:59,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:57:59,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:57:59,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:57:59,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:57:59,015 INFO L87 Difference]: Start difference. First operand 18925 states and 28254 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:02,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:58:02,653 INFO L93 Difference]: Finished difference Result 29923 states and 44851 transitions. [2022-11-21 16:58:02,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:58:02,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-11-21 16:58:02,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:58:02,679 INFO L225 Difference]: With dead ends: 29923 [2022-11-21 16:58:02,680 INFO L226 Difference]: Without dead ends: 15895 [2022-11-21 16:58:02,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:58:02,691 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 53 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:58:02,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1076 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:58:02,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15895 states. [2022-11-21 16:58:05,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15895 to 15895. [2022-11-21 16:58:05,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15895 states, 15894 states have (on average 1.4882345539197182) internal successors, (23654), 15894 states have internal predecessors, (23654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:05,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15895 states to 15895 states and 23654 transitions. [2022-11-21 16:58:05,410 INFO L78 Accepts]: Start accepts. Automaton has 15895 states and 23654 transitions. Word has length 112 [2022-11-21 16:58:05,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:58:05,411 INFO L495 AbstractCegarLoop]: Abstraction has 15895 states and 23654 transitions. [2022-11-21 16:58:05,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:05,411 INFO L276 IsEmpty]: Start isEmpty. Operand 15895 states and 23654 transitions. [2022-11-21 16:58:05,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-21 16:58:05,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:58:05,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:05,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 16:58:05,418 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:58:05,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:05,419 INFO L85 PathProgramCache]: Analyzing trace with hash 2111608284, now seen corresponding path program 1 times [2022-11-21 16:58:05,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:05,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829630366] [2022-11-21 16:58:05,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:05,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:05,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:05,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829630366] [2022-11-21 16:58:05,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829630366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:05,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:05,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:58:05,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763014260] [2022-11-21 16:58:05,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:05,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:58:05,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:05,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:58:05,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:58:05,725 INFO L87 Difference]: Start difference. First operand 15895 states and 23654 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:08,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:58:08,193 INFO L93 Difference]: Finished difference Result 27467 states and 40894 transitions. [2022-11-21 16:58:08,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:58:08,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-21 16:58:08,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:58:08,209 INFO L225 Difference]: With dead ends: 27467 [2022-11-21 16:58:08,210 INFO L226 Difference]: Without dead ends: 11642 [2022-11-21 16:58:08,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:58:08,217 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 43 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:58:08,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1060 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:58:08,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11642 states. [2022-11-21 16:58:10,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11642 to 11642. [2022-11-21 16:58:10,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11642 states, 11641 states have (on average 1.4883601065200585) internal successors, (17326), 11641 states have internal predecessors, (17326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:10,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11642 states to 11642 states and 17326 transitions. [2022-11-21 16:58:10,421 INFO L78 Accepts]: Start accepts. Automaton has 11642 states and 17326 transitions. Word has length 115 [2022-11-21 16:58:10,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:58:10,421 INFO L495 AbstractCegarLoop]: Abstraction has 11642 states and 17326 transitions. [2022-11-21 16:58:10,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:10,421 INFO L276 IsEmpty]: Start isEmpty. Operand 11642 states and 17326 transitions. [2022-11-21 16:58:10,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-21 16:58:10,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:58:10,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:10,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 16:58:10,426 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:58:10,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:10,427 INFO L85 PathProgramCache]: Analyzing trace with hash -993915098, now seen corresponding path program 1 times [2022-11-21 16:58:10,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:10,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097709901] [2022-11-21 16:58:10,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:10,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:10,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:10,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:10,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097709901] [2022-11-21 16:58:10,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097709901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:10,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:10,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:58:10,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757179800] [2022-11-21 16:58:10,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:10,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:58:10,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:10,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:58:10,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:58:10,688 INFO L87 Difference]: Start difference. First operand 11642 states and 17326 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:13,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:58:13,264 INFO L93 Difference]: Finished difference Result 20313 states and 30222 transitions. [2022-11-21 16:58:13,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:58:13,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2022-11-21 16:58:13,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:58:13,280 INFO L225 Difference]: With dead ends: 20313 [2022-11-21 16:58:13,280 INFO L226 Difference]: Without dead ends: 11632 [2022-11-21 16:58:13,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:58:13,289 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 23 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:58:13,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1042 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:58:13,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11632 states. [2022-11-21 16:58:15,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11632 to 11632. [2022-11-21 16:58:15,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11632 states, 11631 states have (on average 1.4883500988736995) internal successors, (17311), 11631 states have internal predecessors, (17311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:15,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11632 states to 11632 states and 17311 transitions. [2022-11-21 16:58:15,297 INFO L78 Accepts]: Start accepts. Automaton has 11632 states and 17311 transitions. Word has length 120 [2022-11-21 16:58:15,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:58:15,297 INFO L495 AbstractCegarLoop]: Abstraction has 11632 states and 17311 transitions. [2022-11-21 16:58:15,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:15,297 INFO L276 IsEmpty]: Start isEmpty. Operand 11632 states and 17311 transitions. [2022-11-21 16:58:15,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-21 16:58:15,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:58:15,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:15,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 16:58:15,303 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:58:15,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:15,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1394285578, now seen corresponding path program 1 times [2022-11-21 16:58:15,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:15,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403239925] [2022-11-21 16:58:15,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:15,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:15,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:15,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:15,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403239925] [2022-11-21 16:58:15,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403239925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:15,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:15,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:58:15,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246437333] [2022-11-21 16:58:15,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:15,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:58:15,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:15,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:58:15,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:58:15,624 INFO L87 Difference]: Start difference. First operand 11632 states and 17311 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:18,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:58:18,001 INFO L93 Difference]: Finished difference Result 22352 states and 33242 transitions. [2022-11-21 16:58:18,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:58:18,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2022-11-21 16:58:18,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:58:18,014 INFO L225 Difference]: With dead ends: 22352 [2022-11-21 16:58:18,014 INFO L226 Difference]: Without dead ends: 10976 [2022-11-21 16:58:18,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:58:18,021 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 882 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:58:18,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 827 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:58:18,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10976 states. [2022-11-21 16:58:19,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10976 to 10819. [2022-11-21 16:58:19,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10819 states, 10818 states have (on average 1.4815122943242744) internal successors, (16027), 10818 states have internal predecessors, (16027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:19,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10819 states to 10819 states and 16027 transitions. [2022-11-21 16:58:19,871 INFO L78 Accepts]: Start accepts. Automaton has 10819 states and 16027 transitions. Word has length 120 [2022-11-21 16:58:19,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:58:19,872 INFO L495 AbstractCegarLoop]: Abstraction has 10819 states and 16027 transitions. [2022-11-21 16:58:19,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:19,872 INFO L276 IsEmpty]: Start isEmpty. Operand 10819 states and 16027 transitions. [2022-11-21 16:58:19,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-21 16:58:19,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:58:19,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:19,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 16:58:19,875 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:58:19,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:19,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1343086903, now seen corresponding path program 1 times [2022-11-21 16:58:19,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:19,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065653545] [2022-11-21 16:58:19,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:19,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:20,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:20,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:20,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065653545] [2022-11-21 16:58:20,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065653545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:20,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:20,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:58:20,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658631862] [2022-11-21 16:58:20,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:20,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:58:20,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:20,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:58:20,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:58:20,050 INFO L87 Difference]: Start difference. First operand 10819 states and 16027 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:22,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:58:22,436 INFO L93 Difference]: Finished difference Result 20408 states and 30668 transitions. [2022-11-21 16:58:22,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:58:22,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-21 16:58:22,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:58:22,456 INFO L225 Difference]: With dead ends: 20408 [2022-11-21 16:58:22,456 INFO L226 Difference]: Without dead ends: 10819 [2022-11-21 16:58:22,466 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 [2022-11-21 16:58:22,467 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 848 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:58:22,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 350 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:58:22,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10819 states. [2022-11-21 16:58:24,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10819 to 10819. [2022-11-21 16:58:24,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10819 states, 10818 states have (on average 1.4694952856350527) internal successors, (15897), 10818 states have internal predecessors, (15897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:24,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10819 states to 10819 states and 15897 transitions. [2022-11-21 16:58:24,702 INFO L78 Accepts]: Start accepts. Automaton has 10819 states and 15897 transitions. Word has length 122 [2022-11-21 16:58:24,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:58:24,702 INFO L495 AbstractCegarLoop]: Abstraction has 10819 states and 15897 transitions. [2022-11-21 16:58:24,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:24,702 INFO L276 IsEmpty]: Start isEmpty. Operand 10819 states and 15897 transitions. [2022-11-21 16:58:24,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-21 16:58:24,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:58:24,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:24,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 16:58:24,705 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:58:24,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:24,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1090994532, now seen corresponding path program 1 times [2022-11-21 16:58:24,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:24,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304670382] [2022-11-21 16:58:24,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:24,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:24,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:24,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:24,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304670382] [2022-11-21 16:58:24,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304670382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:24,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:24,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:58:24,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340810418] [2022-11-21 16:58:24,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:24,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:58:24,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:24,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:58:24,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:58:24,871 INFO L87 Difference]: Start difference. First operand 10819 states and 15897 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:27,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:58:27,671 INFO L93 Difference]: Finished difference Result 20628 states and 30690 transitions. [2022-11-21 16:58:27,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:58:27,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-21 16:58:27,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:58:27,684 INFO L225 Difference]: With dead ends: 20628 [2022-11-21 16:58:27,684 INFO L226 Difference]: Without dead ends: 10819 [2022-11-21 16:58:27,690 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 [2022-11-21 16:58:27,691 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 846 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:58:27,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 348 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:58:27,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10819 states. [2022-11-21 16:58:29,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10819 to 10819. [2022-11-21 16:58:29,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10819 states, 10818 states have (on average 1.457478276945831) internal successors, (15767), 10818 states have internal predecessors, (15767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:29,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10819 states to 10819 states and 15767 transitions. [2022-11-21 16:58:29,799 INFO L78 Accepts]: Start accepts. Automaton has 10819 states and 15767 transitions. Word has length 122 [2022-11-21 16:58:29,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:58:29,799 INFO L495 AbstractCegarLoop]: Abstraction has 10819 states and 15767 transitions. [2022-11-21 16:58:29,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:29,799 INFO L276 IsEmpty]: Start isEmpty. Operand 10819 states and 15767 transitions. [2022-11-21 16:58:29,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-21 16:58:29,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:58:29,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:29,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 16:58:29,804 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:58:29,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:29,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1423224191, now seen corresponding path program 1 times [2022-11-21 16:58:29,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:29,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623804941] [2022-11-21 16:58:29,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:29,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:30,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:30,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623804941] [2022-11-21 16:58:30,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623804941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:30,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:30,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:58:30,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644119547] [2022-11-21 16:58:30,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:30,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:58:30,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:30,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:58:30,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:58:30,214 INFO L87 Difference]: Start difference. First operand 10819 states and 15767 transitions. Second operand has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:35,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:58:35,599 INFO L93 Difference]: Finished difference Result 29158 states and 43675 transitions. [2022-11-21 16:58:35,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:58:35,600 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-21 16:58:35,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:58:35,628 INFO L225 Difference]: With dead ends: 29158 [2022-11-21 16:58:35,628 INFO L226 Difference]: Without dead ends: 20026 [2022-11-21 16:58:35,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:58:35,636 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 743 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:58:35,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 859 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:58:35,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20026 states. [2022-11-21 16:58:39,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20026 to 20024. [2022-11-21 16:58:39,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20024 states, 20023 states have (on average 1.4824451880337612) internal successors, (29683), 20023 states have internal predecessors, (29683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:39,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20024 states to 20024 states and 29683 transitions. [2022-11-21 16:58:39,782 INFO L78 Accepts]: Start accepts. Automaton has 20024 states and 29683 transitions. Word has length 122 [2022-11-21 16:58:39,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:58:39,783 INFO L495 AbstractCegarLoop]: Abstraction has 20024 states and 29683 transitions. [2022-11-21 16:58:39,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:39,783 INFO L276 IsEmpty]: Start isEmpty. Operand 20024 states and 29683 transitions. [2022-11-21 16:58:39,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-21 16:58:39,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:58:39,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:39,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 16:58:39,789 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:58:39,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:39,789 INFO L85 PathProgramCache]: Analyzing trace with hash 249575419, now seen corresponding path program 1 times [2022-11-21 16:58:39,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:39,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746426598] [2022-11-21 16:58:39,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:39,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:40,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:40,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:40,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746426598] [2022-11-21 16:58:40,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746426598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:40,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:40,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:58:40,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538337031] [2022-11-21 16:58:40,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:40,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:58:40,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:40,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:58:40,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:58:40,110 INFO L87 Difference]: Start difference. First operand 20024 states and 29683 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:49,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:58:49,320 INFO L93 Difference]: Finished difference Result 54720 states and 82953 transitions. [2022-11-21 16:58:49,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:58:49,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-21 16:58:49,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:58:49,391 INFO L225 Difference]: With dead ends: 54720 [2022-11-21 16:58:49,391 INFO L226 Difference]: Without dead ends: 37372 [2022-11-21 16:58:49,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:58:49,406 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 350 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:58:49,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1103 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:58:49,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37372 states. [2022-11-21 16:58:58,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37372 to 37370. [2022-11-21 16:58:58,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37370 states, 37369 states have (on average 1.4834488479755947) internal successors, (55435), 37369 states have internal predecessors, (55435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:58,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37370 states to 37370 states and 55435 transitions. [2022-11-21 16:58:58,369 INFO L78 Accepts]: Start accepts. Automaton has 37370 states and 55435 transitions. Word has length 122 [2022-11-21 16:58:58,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:58:58,370 INFO L495 AbstractCegarLoop]: Abstraction has 37370 states and 55435 transitions. [2022-11-21 16:58:58,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:58:58,370 INFO L276 IsEmpty]: Start isEmpty. Operand 37370 states and 55435 transitions. [2022-11-21 16:58:58,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-21 16:58:58,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:58:58,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:58,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 16:58:58,373 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:58:58,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:58,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1986267249, now seen corresponding path program 1 times [2022-11-21 16:58:58,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:58,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307891703] [2022-11-21 16:58:58,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:58,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:59:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:59:00,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:59:00,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307891703] [2022-11-21 16:59:00,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307891703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:59:00,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:59:00,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-21 16:59:00,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013381435] [2022-11-21 16:59:00,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:59:00,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 16:59:00,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:59:00,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 16:59:00,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:59:00,515 INFO L87 Difference]: Start difference. First operand 37370 states and 55435 transitions. Second operand has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)