./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label23.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label23.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro --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 adf96f71bf2a13ae5fd22bce01b9c481e5a9d21572a73a17cea58c8fcaecb44e --- 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-8393723 [2022-11-18 18:37:51,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:37:51,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:37:51,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:37:51,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:37:51,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:37:51,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:37:51,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:37:51,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:37:51,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:37:51,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:37:51,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:37:51,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:37:51,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:37:51,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:37:51,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:37:51,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:37:51,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:37:51,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:37:51,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:37:51,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:37:51,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:37:51,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:37:51,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:37:51,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:37:51,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:37:51,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:37:51,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:37:51,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:37:51,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:37:51,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:37:51,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:37:51,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:37:51,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:37:51,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:37:51,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:37:51,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:37:51,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:37:51,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:37:51,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:37:51,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:37:51,615 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:37:51,674 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:37:51,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:37:51,675 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:37:51,675 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:37:51,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:37:51,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:37:51,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:37:51,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:37:51,678 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:37:51,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:37:51,680 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:37:51,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:37:51,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:37:51,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:37:51,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:37:51,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:37:51,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:37:51,682 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:37:51,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:37:51,683 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:37:51,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:37:51,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:37:51,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:37:51,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:37:51,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:37:51,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:37:51,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:37:51,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:37:51,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:37:51,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:37:51,688 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:37:51,688 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:37:51,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:37:51,689 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_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adf96f71bf2a13ae5fd22bce01b9c481e5a9d21572a73a17cea58c8fcaecb44e [2022-11-18 18:37:51,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:37:52,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:37:52,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:37:52,035 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:37:52,037 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:37:52,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/eca-rers2012/Problem13_label23.c [2022-11-18 18:37:52,114 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/data/313577d72/6b14a745d6164eb49d5e27e7fd04ed59/FLAG92fd1a919 [2022-11-18 18:37:53,107 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:37:53,108 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/sv-benchmarks/c/eca-rers2012/Problem13_label23.c [2022-11-18 18:37:53,162 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/data/313577d72/6b14a745d6164eb49d5e27e7fd04ed59/FLAG92fd1a919 [2022-11-18 18:37:53,506 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/data/313577d72/6b14a745d6164eb49d5e27e7fd04ed59 [2022-11-18 18:37:53,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:37:53,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:37:53,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:37:53,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:37:53,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:37:53,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:37:53" (1/1) ... [2022-11-18 18:37:53,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10d7061b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:53, skipping insertion in model container [2022-11-18 18:37:53,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:37:53" (1/1) ... [2022-11-18 18:37:53,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:37:53,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:37:54,026 WARN L234 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_6b58a41c-6d16-4d27-926b-490905952b1b/sv-benchmarks/c/eca-rers2012/Problem13_label23.c[2192,2205] [2022-11-18 18:37:55,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:37:55,609 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:37:55,648 WARN L234 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_6b58a41c-6d16-4d27-926b-490905952b1b/sv-benchmarks/c/eca-rers2012/Problem13_label23.c[2192,2205] [2022-11-18 18:37:56,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:37:56,491 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:37:56,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:56 WrapperNode [2022-11-18 18:37:56,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:37:56,493 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:37:56,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:37:56,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:37:56,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:56" (1/1) ... [2022-11-18 18:37:56,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:56" (1/1) ... [2022-11-18 18:37:57,244 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-11-18 18:37:57,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:37:57,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:37:57,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:37:57,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:37:57,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:56" (1/1) ... [2022-11-18 18:37:57,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:56" (1/1) ... [2022-11-18 18:37:57,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:56" (1/1) ... [2022-11-18 18:37:57,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:56" (1/1) ... [2022-11-18 18:37:57,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:56" (1/1) ... [2022-11-18 18:37:58,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:56" (1/1) ... [2022-11-18 18:37:58,065 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:56" (1/1) ... [2022-11-18 18:37:58,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:56" (1/1) ... [2022-11-18 18:37:58,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:37:58,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:37:58,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:37:58,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:37:58,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:56" (1/1) ... [2022-11-18 18:37:58,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:37:58,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:37:58,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:37:58,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:37:58,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:37:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:37:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:37:58,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:37:58,576 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:37:58,578 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:38:06,530 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:38:06,565 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:38:06,566 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 18:38:06,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:06 BoogieIcfgContainer [2022-11-18 18:38:06,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:38:06,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:38:06,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:38:06,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:38:06,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:37:53" (1/3) ... [2022-11-18 18:38:06,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@697a6c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:38:06, skipping insertion in model container [2022-11-18 18:38:06,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:56" (2/3) ... [2022-11-18 18:38:06,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@697a6c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:38:06, skipping insertion in model container [2022-11-18 18:38:06,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:06" (3/3) ... [2022-11-18 18:38:06,587 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label23.c [2022-11-18 18:38:06,611 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:38:06,611 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:38:06,752 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:38:06,768 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;@2aaf32a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:38:06,768 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:38:06,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:06,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:38:06,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:06,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:06,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:06,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:06,799 INFO L85 PathProgramCache]: Analyzing trace with hash -461255479, now seen corresponding path program 1 times [2022-11-18 18:38:06,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:06,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460318209] [2022-11-18 18:38:06,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:06,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:07,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:07,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:07,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460318209] [2022-11-18 18:38:07,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460318209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:07,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:07,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:38:07,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874956031] [2022-11-18 18:38:07,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:07,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:07,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:07,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:07,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:07,214 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:15,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:15,811 INFO L93 Difference]: Finished difference Result 3160 states and 5843 transitions. [2022-11-18 18:38:15,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:15,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-18 18:38:15,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:15,847 INFO L225 Difference]: With dead ends: 3160 [2022-11-18 18:38:15,848 INFO L226 Difference]: Without dead ends: 1983 [2022-11-18 18:38:15,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:15,865 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 1090 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:15,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 340 Invalid, 4004 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [974 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-18 18:38:15,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2022-11-18 18:38:16,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1930. [2022-11-18 18:38:16,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1929 states have (on average 1.7973043027475375) internal successors, (3467), 1929 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:16,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 3467 transitions. [2022-11-18 18:38:16,033 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 3467 transitions. Word has length 13 [2022-11-18 18:38:16,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:16,034 INFO L495 AbstractCegarLoop]: Abstraction has 1930 states and 3467 transitions. [2022-11-18 18:38:16,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:16,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 3467 transitions. [2022-11-18 18:38:16,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-18 18:38:16,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:16,038 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:16,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:38:16,038 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:16,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:16,040 INFO L85 PathProgramCache]: Analyzing trace with hash 365234242, now seen corresponding path program 1 times [2022-11-18 18:38:16,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:16,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619803749] [2022-11-18 18:38:16,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:16,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:16,399 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:16,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:16,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619803749] [2022-11-18 18:38:16,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619803749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:16,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:16,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:38:16,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49322310] [2022-11-18 18:38:16,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:16,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:16,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:16,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:16,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:16,405 INFO L87 Difference]: Start difference. First operand 1930 states and 3467 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:22,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:22,599 INFO L93 Difference]: Finished difference Result 5456 states and 9917 transitions. [2022-11-18 18:38:22,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:22,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-11-18 18:38:22,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:22,622 INFO L225 Difference]: With dead ends: 5456 [2022-11-18 18:38:22,622 INFO L226 Difference]: Without dead ends: 3528 [2022-11-18 18:38:22,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:22,635 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:22,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1007 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-18 18:38:22,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2022-11-18 18:38:22,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3526. [2022-11-18 18:38:22,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3525 states have (on average 1.5670921985815602) internal successors, (5524), 3525 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:22,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 5524 transitions. [2022-11-18 18:38:22,854 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 5524 transitions. Word has length 78 [2022-11-18 18:38:22,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:22,855 INFO L495 AbstractCegarLoop]: Abstraction has 3526 states and 5524 transitions. [2022-11-18 18:38:22,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:22,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 5524 transitions. [2022-11-18 18:38:22,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-18 18:38:22,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:22,859 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:22,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:38:22,860 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:22,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:22,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1133112465, now seen corresponding path program 1 times [2022-11-18 18:38:22,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:22,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591721267] [2022-11-18 18:38:22,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:22,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:23,117 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:23,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:23,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591721267] [2022-11-18 18:38:23,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591721267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:23,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:23,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:38:23,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184449479] [2022-11-18 18:38:23,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:23,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:23,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:23,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:23,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:23,121 INFO L87 Difference]: Start difference. First operand 3526 states and 5524 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:29,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:29,253 INFO L93 Difference]: Finished difference Result 10232 states and 16097 transitions. [2022-11-18 18:38:29,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:29,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-11-18 18:38:29,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:29,285 INFO L225 Difference]: With dead ends: 10232 [2022-11-18 18:38:29,286 INFO L226 Difference]: Without dead ends: 6708 [2022-11-18 18:38:29,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:29,294 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:29,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 850 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-18 18:38:29,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6708 states. [2022-11-18 18:38:29,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6708 to 6700. [2022-11-18 18:38:29,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6700 states, 6699 states have (on average 1.413046723391551) internal successors, (9466), 6699 states have internal predecessors, (9466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:29,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6700 states to 6700 states and 9466 transitions. [2022-11-18 18:38:29,582 INFO L78 Accepts]: Start accepts. Automaton has 6700 states and 9466 transitions. Word has length 84 [2022-11-18 18:38:29,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:29,586 INFO L495 AbstractCegarLoop]: Abstraction has 6700 states and 9466 transitions. [2022-11-18 18:38:29,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:29,586 INFO L276 IsEmpty]: Start isEmpty. Operand 6700 states and 9466 transitions. [2022-11-18 18:38:29,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-18 18:38:29,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:29,597 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:29,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:38:29,597 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:29,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:29,599 INFO L85 PathProgramCache]: Analyzing trace with hash 659309084, now seen corresponding path program 1 times [2022-11-18 18:38:29,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:29,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200506880] [2022-11-18 18:38:29,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:29,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:29,876 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:29,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:29,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200506880] [2022-11-18 18:38:29,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200506880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:29,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:29,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:38:29,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101531047] [2022-11-18 18:38:29,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:29,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:29,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:29,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:29,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:29,883 INFO L87 Difference]: Start difference. First operand 6700 states and 9466 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:36,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:36,583 INFO L93 Difference]: Finished difference Result 17443 states and 24479 transitions. [2022-11-18 18:38:36,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:36,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2022-11-18 18:38:36,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:36,619 INFO L225 Difference]: With dead ends: 17443 [2022-11-18 18:38:36,619 INFO L226 Difference]: Without dead ends: 10745 [2022-11-18 18:38:36,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:36,632 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:36,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 965 Invalid, 3741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-18 18:38:36,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10745 states. [2022-11-18 18:38:36,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10745 to 10669. [2022-11-18 18:38:36,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3562992125984252) internal successors, (14469), 10668 states have internal predecessors, (14469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:36,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14469 transitions. [2022-11-18 18:38:36,994 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14469 transitions. Word has length 114 [2022-11-18 18:38:36,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:36,995 INFO L495 AbstractCegarLoop]: Abstraction has 10669 states and 14469 transitions. [2022-11-18 18:38:36,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:36,996 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14469 transitions. [2022-11-18 18:38:37,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 18:38:37,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:37,007 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:37,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:38:37,008 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:37,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:37,008 INFO L85 PathProgramCache]: Analyzing trace with hash -606577547, now seen corresponding path program 1 times [2022-11-18 18:38:37,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:37,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12833351] [2022-11-18 18:38:37,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:37,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:37,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:37,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12833351] [2022-11-18 18:38:37,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12833351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:37,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:37,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:38:37,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997890487] [2022-11-18 18:38:37,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:37,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:37,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:37,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:37,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:37,322 INFO L87 Difference]: Start difference. First operand 10669 states and 14469 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:43,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:43,158 INFO L93 Difference]: Finished difference Result 30031 states and 41242 transitions. [2022-11-18 18:38:43,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:43,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-11-18 18:38:43,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:43,224 INFO L225 Difference]: With dead ends: 30031 [2022-11-18 18:38:43,225 INFO L226 Difference]: Without dead ends: 20151 [2022-11-18 18:38:43,234 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 [2022-11-18 18:38:43,235 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 853 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:43,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1160 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2484 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-18 18:38:43,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20151 states. [2022-11-18 18:38:43,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20151 to 18550. [2022-11-18 18:38:43,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18550 states, 18549 states have (on average 1.252466440239366) internal successors, (23232), 18549 states have internal predecessors, (23232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:43,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18550 states to 18550 states and 23232 transitions. [2022-11-18 18:38:43,594 INFO L78 Accepts]: Start accepts. Automaton has 18550 states and 23232 transitions. Word has length 124 [2022-11-18 18:38:43,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:43,595 INFO L495 AbstractCegarLoop]: Abstraction has 18550 states and 23232 transitions. [2022-11-18 18:38:43,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:43,596 INFO L276 IsEmpty]: Start isEmpty. Operand 18550 states and 23232 transitions. [2022-11-18 18:38:43,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-18 18:38:43,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:43,598 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:43,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:38:43,599 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:43,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:43,600 INFO L85 PathProgramCache]: Analyzing trace with hash 889611492, now seen corresponding path program 1 times [2022-11-18 18:38:43,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:43,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658526152] [2022-11-18 18:38:43,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:43,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:43,910 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:43,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:43,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658526152] [2022-11-18 18:38:43,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658526152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:43,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:43,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:38:43,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535354620] [2022-11-18 18:38:43,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:43,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:43,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:43,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:43,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:43,915 INFO L87 Difference]: Start difference. First operand 18550 states and 23232 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:49,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:49,904 INFO L93 Difference]: Finished difference Result 44989 states and 55638 transitions. [2022-11-18 18:38:49,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:49,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2022-11-18 18:38:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:49,971 INFO L225 Difference]: With dead ends: 44989 [2022-11-18 18:38:49,971 INFO L226 Difference]: Without dead ends: 26441 [2022-11-18 18:38:49,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:49,996 INFO L413 NwaCegarLoop]: 1030 mSDtfsCounter, 730 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:49,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1214 Invalid, 2895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-18 18:38:50,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26441 states. [2022-11-18 18:38:50,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26441 to 26434. [2022-11-18 18:38:50,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26434 states, 26433 states have (on average 1.2007717625695153) internal successors, (31740), 26433 states have internal predecessors, (31740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:50,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26434 states to 26434 states and 31740 transitions. [2022-11-18 18:38:50,484 INFO L78 Accepts]: Start accepts. Automaton has 26434 states and 31740 transitions. Word has length 129 [2022-11-18 18:38:50,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:50,484 INFO L495 AbstractCegarLoop]: Abstraction has 26434 states and 31740 transitions. [2022-11-18 18:38:50,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:50,485 INFO L276 IsEmpty]: Start isEmpty. Operand 26434 states and 31740 transitions. [2022-11-18 18:38:50,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-11-18 18:38:50,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:50,489 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:50,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:38:50,490 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:50,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:50,491 INFO L85 PathProgramCache]: Analyzing trace with hash -836746136, now seen corresponding path program 1 times [2022-11-18 18:38:50,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:50,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256246164] [2022-11-18 18:38:50,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:50,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:50,801 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:50,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:50,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256246164] [2022-11-18 18:38:50,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256246164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:50,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:50,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:38:50,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397993940] [2022-11-18 18:38:50,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:50,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:50,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:50,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:50,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:50,805 INFO L87 Difference]: Start difference. First operand 26434 states and 31740 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:57,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:57,148 INFO L93 Difference]: Finished difference Result 72535 states and 87976 transitions. [2022-11-18 18:38:57,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:57,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 227 [2022-11-18 18:38:57,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:57,231 INFO L225 Difference]: With dead ends: 72535 [2022-11-18 18:38:57,232 INFO L226 Difference]: Without dead ends: 46103 [2022-11-18 18:38:57,267 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 [2022-11-18 18:38:57,268 INFO L413 NwaCegarLoop]: 1847 mSDtfsCounter, 840 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:57,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1984 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-18 18:38:57,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46103 states. [2022-11-18 18:38:57,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46103 to 42946. [2022-11-18 18:38:57,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42946 states, 42945 states have (on average 1.17205728257073) internal successors, (50334), 42945 states have internal predecessors, (50334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:57,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42946 states to 42946 states and 50334 transitions. [2022-11-18 18:38:57,981 INFO L78 Accepts]: Start accepts. Automaton has 42946 states and 50334 transitions. Word has length 227 [2022-11-18 18:38:57,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:57,982 INFO L495 AbstractCegarLoop]: Abstraction has 42946 states and 50334 transitions. [2022-11-18 18:38:57,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:57,982 INFO L276 IsEmpty]: Start isEmpty. Operand 42946 states and 50334 transitions. [2022-11-18 18:38:57,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-18 18:38:57,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:57,987 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:57,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:38:57,988 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:57,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:57,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1380443233, now seen corresponding path program 1 times [2022-11-18 18:38:57,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:57,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055425183] [2022-11-18 18:38:57,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:57,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:58,664 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 18:38:58,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:58,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055425183] [2022-11-18 18:38:58,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055425183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:58,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:58,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:38:58,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527822189] [2022-11-18 18:38:58,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:58,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:58,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:58,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:58,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:58,668 INFO L87 Difference]: Start difference. First operand 42946 states and 50334 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:03,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:03,916 INFO L93 Difference]: Finished difference Result 85103 states and 99869 transitions. [2022-11-18 18:39:03,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:39:03,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 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 233 [2022-11-18 18:39:03,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:03,974 INFO L225 Difference]: With dead ends: 85103 [2022-11-18 18:39:03,975 INFO L226 Difference]: Without dead ends: 42946 [2022-11-18 18:39:04,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:04,003 INFO L413 NwaCegarLoop]: 1064 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2501 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 2505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:04,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1193 Invalid, 2505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2501 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-18 18:39:04,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42946 states. [2022-11-18 18:39:04,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42946 to 42946. [2022-11-18 18:39:04,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42946 states, 42945 states have (on average 1.1719408545814414) internal successors, (50329), 42945 states have internal predecessors, (50329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:04,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42946 states to 42946 states and 50329 transitions. [2022-11-18 18:39:04,813 INFO L78 Accepts]: Start accepts. Automaton has 42946 states and 50329 transitions. Word has length 233 [2022-11-18 18:39:04,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:04,813 INFO L495 AbstractCegarLoop]: Abstraction has 42946 states and 50329 transitions. [2022-11-18 18:39:04,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:04,814 INFO L276 IsEmpty]: Start isEmpty. Operand 42946 states and 50329 transitions. [2022-11-18 18:39:04,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-18 18:39:04,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:04,819 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:04,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:39:04,819 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:04,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:04,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1208046358, now seen corresponding path program 1 times [2022-11-18 18:39:04,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:04,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268862167] [2022-11-18 18:39:04,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:04,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:05,124 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:05,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:05,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268862167] [2022-11-18 18:39:05,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268862167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:05,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:05,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:39:05,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108701897] [2022-11-18 18:39:05,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:05,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:39:05,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:05,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:39:05,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:05,129 INFO L87 Difference]: Start difference. First operand 42946 states and 50329 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:11,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:11,605 INFO L93 Difference]: Finished difference Result 104790 states and 124853 transitions. [2022-11-18 18:39:11,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:39:11,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 240 [2022-11-18 18:39:11,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:11,688 INFO L225 Difference]: With dead ends: 104790 [2022-11-18 18:39:11,688 INFO L226 Difference]: Without dead ends: 62633 [2022-11-18 18:39:11,713 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 [2022-11-18 18:39:11,714 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 825 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:11,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 928 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-18 18:39:11,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62633 states. [2022-11-18 18:39:12,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62633 to 61048. [2022-11-18 18:39:12,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61048 states, 61047 states have (on average 1.161138139466313) internal successors, (70884), 61047 states have internal predecessors, (70884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:12,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61048 states to 61048 states and 70884 transitions. [2022-11-18 18:39:12,807 INFO L78 Accepts]: Start accepts. Automaton has 61048 states and 70884 transitions. Word has length 240 [2022-11-18 18:39:12,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:12,808 INFO L495 AbstractCegarLoop]: Abstraction has 61048 states and 70884 transitions. [2022-11-18 18:39:12,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:12,808 INFO L276 IsEmpty]: Start isEmpty. Operand 61048 states and 70884 transitions. [2022-11-18 18:39:12,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-11-18 18:39:12,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:12,813 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:12,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:39:12,814 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:12,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:12,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1350158918, now seen corresponding path program 1 times [2022-11-18 18:39:12,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:12,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956498348] [2022-11-18 18:39:12,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:12,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:14,042 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-18 18:39:14,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:14,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956498348] [2022-11-18 18:39:14,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956498348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:14,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:14,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:39:14,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476209130] [2022-11-18 18:39:14,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:14,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:39:14,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:14,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:39:14,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:14,051 INFO L87 Difference]: Start difference. First operand 61048 states and 70884 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:19,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:19,795 INFO L93 Difference]: Finished difference Result 121305 states and 140973 transitions. [2022-11-18 18:39:19,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:39:19,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 254 [2022-11-18 18:39:19,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:19,865 INFO L225 Difference]: With dead ends: 121305 [2022-11-18 18:39:19,865 INFO L226 Difference]: Without dead ends: 61046 [2022-11-18 18:39:20,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:20,041 INFO L413 NwaCegarLoop]: 1357 mSDtfsCounter, 1193 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:20,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 1438 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-18 18:39:20,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61046 states. [2022-11-18 18:39:20,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61046 to 61045. [2022-11-18 18:39:20,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61045 states, 61044 states have (on average 1.1303322193827403) internal successors, (69000), 61044 states have internal predecessors, (69000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:20,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61045 states to 61045 states and 69000 transitions. [2022-11-18 18:39:20,987 INFO L78 Accepts]: Start accepts. Automaton has 61045 states and 69000 transitions. Word has length 254 [2022-11-18 18:39:20,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:20,988 INFO L495 AbstractCegarLoop]: Abstraction has 61045 states and 69000 transitions. [2022-11-18 18:39:20,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:20,988 INFO L276 IsEmpty]: Start isEmpty. Operand 61045 states and 69000 transitions. [2022-11-18 18:39:20,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-11-18 18:39:20,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:20,997 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:20,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:39:20,997 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:20,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:20,998 INFO L85 PathProgramCache]: Analyzing trace with hash 290243953, now seen corresponding path program 1 times [2022-11-18 18:39:20,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:20,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088664438] [2022-11-18 18:39:20,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:20,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 150 proven. 113 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 18:39:23,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:23,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088664438] [2022-11-18 18:39:23,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088664438] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:39:23,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43493146] [2022-11-18 18:39:23,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:23,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:23,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:23,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:23,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:39:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:23,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:39:23,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:24,071 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-18 18:39:24,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:39:24,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43493146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:24,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:39:24,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-18 18:39:24,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770317442] [2022-11-18 18:39:24,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:24,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:39:24,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:24,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:39:24,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:39:24,075 INFO L87 Difference]: Start difference. First operand 61045 states and 69000 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:29,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:29,933 INFO L93 Difference]: Finished difference Result 121290 states and 137196 transitions. [2022-11-18 18:39:29,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:39:29,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 319 [2022-11-18 18:39:29,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:30,023 INFO L225 Difference]: With dead ends: 121290 [2022-11-18 18:39:30,023 INFO L226 Difference]: Without dead ends: 61034 [2022-11-18 18:39:30,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:39:30,050 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 1073 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 2919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:30,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 816 Invalid, 2919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-18 18:39:30,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61034 states. [2022-11-18 18:39:31,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61034 to 61031. [2022-11-18 18:39:31,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61031 states, 61030 states have (on average 1.0942978862854333) internal successors, (66785), 61030 states have internal predecessors, (66785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:31,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61031 states to 61031 states and 66785 transitions. [2022-11-18 18:39:31,272 INFO L78 Accepts]: Start accepts. Automaton has 61031 states and 66785 transitions. Word has length 319 [2022-11-18 18:39:31,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:31,273 INFO L495 AbstractCegarLoop]: Abstraction has 61031 states and 66785 transitions. [2022-11-18 18:39:31,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:31,273 INFO L276 IsEmpty]: Start isEmpty. Operand 61031 states and 66785 transitions. [2022-11-18 18:39:31,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-11-18 18:39:31,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:31,284 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:31,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 18:39:31,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:31,490 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:31,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:31,491 INFO L85 PathProgramCache]: Analyzing trace with hash 448094546, now seen corresponding path program 1 times [2022-11-18 18:39:31,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:31,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442108041] [2022-11-18 18:39:31,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:31,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:32,143 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-18 18:39:32,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:32,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442108041] [2022-11-18 18:39:32,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442108041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:32,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:32,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:39:32,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008643559] [2022-11-18 18:39:32,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:32,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:39:32,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:32,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:39:32,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:39:32,147 INFO L87 Difference]: Start difference. First operand 61031 states and 66785 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:44,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:44,836 INFO L93 Difference]: Finished difference Result 160046 states and 175830 transitions. [2022-11-18 18:39:44,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:39:44,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 361 [2022-11-18 18:39:44,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:44,948 INFO L225 Difference]: With dead ends: 160046 [2022-11-18 18:39:44,948 INFO L226 Difference]: Without dead ends: 99804 [2022-11-18 18:39:44,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:39:44,969 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 1701 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 6693 mSolverCounterSat, 1016 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1701 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 7709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1016 IncrementalHoareTripleChecker+Valid, 6693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:44,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1701 Valid, 849 Invalid, 7709 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1016 Valid, 6693 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-11-18 18:39:45,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99804 states. [2022-11-18 18:39:46,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99804 to 76786. [2022-11-18 18:39:46,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76786 states, 76785 states have (on average 1.0868138308263333) internal successors, (83451), 76785 states have internal predecessors, (83451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:46,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76786 states to 76786 states and 83451 transitions. [2022-11-18 18:39:46,218 INFO L78 Accepts]: Start accepts. Automaton has 76786 states and 83451 transitions. Word has length 361 [2022-11-18 18:39:46,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:46,218 INFO L495 AbstractCegarLoop]: Abstraction has 76786 states and 83451 transitions. [2022-11-18 18:39:46,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:46,219 INFO L276 IsEmpty]: Start isEmpty. Operand 76786 states and 83451 transitions. [2022-11-18 18:39:46,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-11-18 18:39:46,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:46,223 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:46,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:39:46,224 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:46,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:46,224 INFO L85 PathProgramCache]: Analyzing trace with hash 976006743, now seen corresponding path program 1 times [2022-11-18 18:39:46,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:46,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630542551] [2022-11-18 18:39:46,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:46,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-18 18:39:46,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:46,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630542551] [2022-11-18 18:39:46,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630542551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:46,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:46,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:39:46,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310220674] [2022-11-18 18:39:46,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:46,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:39:46,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:46,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:39:46,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:46,622 INFO L87 Difference]: Start difference. First operand 76786 states and 83451 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:53,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:53,544 INFO L93 Difference]: Finished difference Result 177191 states and 193935 transitions. [2022-11-18 18:39:53,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:39:53,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 374 [2022-11-18 18:39:53,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:53,662 INFO L225 Difference]: With dead ends: 177191 [2022-11-18 18:39:53,662 INFO L226 Difference]: Without dead ends: 101194 [2022-11-18 18:39:53,868 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 [2022-11-18 18:39:53,869 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 813 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 3350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:53,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 893 Invalid, 3350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 2418 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-18 18:39:53,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101194 states. [2022-11-18 18:39:55,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101194 to 99602. [2022-11-18 18:39:55,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99602 states, 99601 states have (on average 1.090099496993002) internal successors, (108575), 99601 states have internal predecessors, (108575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:55,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99602 states to 99602 states and 108575 transitions. [2022-11-18 18:39:55,583 INFO L78 Accepts]: Start accepts. Automaton has 99602 states and 108575 transitions. Word has length 374 [2022-11-18 18:39:55,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:55,584 INFO L495 AbstractCegarLoop]: Abstraction has 99602 states and 108575 transitions. [2022-11-18 18:39:55,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:55,584 INFO L276 IsEmpty]: Start isEmpty. Operand 99602 states and 108575 transitions. [2022-11-18 18:39:55,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-18 18:39:55,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:55,607 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:55,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 18:39:55,608 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:55,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:55,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1106420568, now seen corresponding path program 1 times [2022-11-18 18:39:55,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:55,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479892903] [2022-11-18 18:39:55,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:55,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 319 proven. 113 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-18 18:39:58,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:58,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479892903] [2022-11-18 18:39:58,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479892903] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:39:58,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873089549] [2022-11-18 18:39:58,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:58,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:58,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:58,052 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:58,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:39:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:58,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:39:58,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:58,419 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2022-11-18 18:39:58,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:39:58,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873089549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:58,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:39:58,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-18 18:39:58,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292005552] [2022-11-18 18:39:58,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:58,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:39:58,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:58,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:39:58,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:39:58,423 INFO L87 Difference]: Start difference. First operand 99602 states and 108575 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:04,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:04,507 INFO L93 Difference]: Finished difference Result 199993 states and 217948 transitions. [2022-11-18 18:40:04,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:40:04,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 404 [2022-11-18 18:40:04,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:04,627 INFO L225 Difference]: With dead ends: 199993 [2022-11-18 18:40:04,627 INFO L226 Difference]: Without dead ends: 101180 [2022-11-18 18:40:04,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:40:04,666 INFO L413 NwaCegarLoop]: 1385 mSDtfsCounter, 1026 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:04,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1471 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-18 18:40:04,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101180 states. [2022-11-18 18:40:05,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101180 to 99594. [2022-11-18 18:40:06,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99594 states, 99593 states have (on average 1.0667014750032633) internal successors, (106236), 99593 states have internal predecessors, (106236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:06,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99594 states to 99594 states and 106236 transitions. [2022-11-18 18:40:06,145 INFO L78 Accepts]: Start accepts. Automaton has 99594 states and 106236 transitions. Word has length 404 [2022-11-18 18:40:06,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:06,146 INFO L495 AbstractCegarLoop]: Abstraction has 99594 states and 106236 transitions. [2022-11-18 18:40:06,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:06,146 INFO L276 IsEmpty]: Start isEmpty. Operand 99594 states and 106236 transitions. [2022-11-18 18:40:06,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-11-18 18:40:06,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:06,163 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:06,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:06,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 18:40:06,371 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:06,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:06,371 INFO L85 PathProgramCache]: Analyzing trace with hash -663684841, now seen corresponding path program 1 times [2022-11-18 18:40:06,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:06,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143927672] [2022-11-18 18:40:06,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:06,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-18 18:40:07,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:07,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143927672] [2022-11-18 18:40:07,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143927672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:07,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:07,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:40:07,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448839349] [2022-11-18 18:40:07,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:07,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:40:07,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:07,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:40:07,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:40:07,208 INFO L87 Difference]: Start difference. First operand 99594 states and 106236 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:13,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:13,682 INFO L93 Difference]: Finished difference Result 223599 states and 239290 transitions. [2022-11-18 18:40:13,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:40:13,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 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 486 [2022-11-18 18:40:13,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:13,860 INFO L225 Difference]: With dead ends: 223599 [2022-11-18 18:40:13,860 INFO L226 Difference]: Without dead ends: 123220 [2022-11-18 18:40:13,903 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 [2022-11-18 18:40:13,904 INFO L413 NwaCegarLoop]: 1740 mSDtfsCounter, 703 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:13,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1883 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-18 18:40:14,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123220 states. [2022-11-18 18:40:15,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123220 to 123202. [2022-11-18 18:40:15,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123202 states, 123201 states have (on average 1.0590985462780333) internal successors, (130482), 123201 states have internal predecessors, (130482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:16,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123202 states to 123202 states and 130482 transitions. [2022-11-18 18:40:16,035 INFO L78 Accepts]: Start accepts. Automaton has 123202 states and 130482 transitions. Word has length 486 [2022-11-18 18:40:16,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:16,036 INFO L495 AbstractCegarLoop]: Abstraction has 123202 states and 130482 transitions. [2022-11-18 18:40:16,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:16,036 INFO L276 IsEmpty]: Start isEmpty. Operand 123202 states and 130482 transitions. [2022-11-18 18:40:16,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2022-11-18 18:40:16,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:16,054 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:16,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 18:40:16,054 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:16,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:16,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1195250089, now seen corresponding path program 1 times [2022-11-18 18:40:16,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:16,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204061344] [2022-11-18 18:40:16,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:16,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:18,018 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 262 proven. 110 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 18:40:18,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:18,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204061344] [2022-11-18 18:40:18,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204061344] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:40:18,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176011278] [2022-11-18 18:40:18,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:18,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:18,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:18,020 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:18,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:40:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:18,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:40:18,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:18,431 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-11-18 18:40:18,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:40:18,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176011278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:18,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:40:18,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-11-18 18:40:18,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486254427] [2022-11-18 18:40:18,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:18,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:40:18,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:18,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:40:18,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:40:18,436 INFO L87 Difference]: Start difference. First operand 123202 states and 130482 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:26,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:26,876 INFO L93 Difference]: Finished difference Result 282681 states and 299848 transitions. [2022-11-18 18:40:26,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:40:26,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 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 509 [2022-11-18 18:40:26,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:27,058 INFO L225 Difference]: With dead ends: 282681 [2022-11-18 18:40:27,058 INFO L226 Difference]: Without dead ends: 160268 [2022-11-18 18:40:27,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:40:27,114 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1025 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2753 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 3685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 2753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:27,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 467 Invalid, 3685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 2753 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-18 18:40:27,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160268 states. [2022-11-18 18:40:29,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160268 to 157048. [2022-11-18 18:40:29,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157048 states, 157047 states have (on average 1.0612173425789733) internal successors, (166661), 157047 states have internal predecessors, (166661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:29,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157048 states to 157048 states and 166661 transitions. [2022-11-18 18:40:29,872 INFO L78 Accepts]: Start accepts. Automaton has 157048 states and 166661 transitions. Word has length 509 [2022-11-18 18:40:29,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:29,873 INFO L495 AbstractCegarLoop]: Abstraction has 157048 states and 166661 transitions. [2022-11-18 18:40:29,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:29,874 INFO L276 IsEmpty]: Start isEmpty. Operand 157048 states and 166661 transitions. [2022-11-18 18:40:29,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2022-11-18 18:40:29,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:29,900 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:29,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:30,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:30,107 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:30,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:30,108 INFO L85 PathProgramCache]: Analyzing trace with hash -396042517, now seen corresponding path program 1 times [2022-11-18 18:40:30,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:30,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658452806] [2022-11-18 18:40:30,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:30,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:32,724 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 316 proven. 110 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 18:40:32,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:32,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658452806] [2022-11-18 18:40:32,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658452806] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:40:32,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704958756] [2022-11-18 18:40:32,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:32,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:32,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:32,728 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:32,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:40:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:33,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:40:33,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-18 18:40:34,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:40:34,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704958756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:34,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:40:34,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-18 18:40:34,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710533567] [2022-11-18 18:40:34,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:34,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:40:34,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:34,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:40:34,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:40:34,964 INFO L87 Difference]: Start difference. First operand 157048 states and 166661 transitions. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 2 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:40,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:40,896 INFO L93 Difference]: Finished difference Result 301511 states and 320520 transitions. [2022-11-18 18:40:40,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:40:40,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 2 states have internal predecessors, (424), 0 states have call successors, (0), 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 557 [2022-11-18 18:40:40,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:41,099 INFO L225 Difference]: With dead ends: 301511 [2022-11-18 18:40:41,100 INFO L226 Difference]: Without dead ends: 161783 [2022-11-18 18:40:41,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:40:41,166 INFO L413 NwaCegarLoop]: 1016 mSDtfsCounter, 546 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 2558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:41,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1150 Invalid, 2558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-18 18:40:41,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161783 states. [2022-11-18 18:40:43,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161783 to 160986. [2022-11-18 18:40:43,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160986 states, 160985 states have (on average 1.0561977824020872) internal successors, (170032), 160985 states have internal predecessors, (170032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:44,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160986 states to 160986 states and 170032 transitions. [2022-11-18 18:40:44,289 INFO L78 Accepts]: Start accepts. Automaton has 160986 states and 170032 transitions. Word has length 557 [2022-11-18 18:40:44,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:44,289 INFO L495 AbstractCegarLoop]: Abstraction has 160986 states and 170032 transitions. [2022-11-18 18:40:44,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 2 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:44,290 INFO L276 IsEmpty]: Start isEmpty. Operand 160986 states and 170032 transitions. [2022-11-18 18:40:44,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2022-11-18 18:40:44,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:44,311 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:44,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:44,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b58a41c-6d16-4d27-926b-490905952b1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:44,513 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:44,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:44,514 INFO L85 PathProgramCache]: Analyzing trace with hash 291527895, now seen corresponding path program 1 times [2022-11-18 18:40:44,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:44,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399855529] [2022-11-18 18:40:44,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:44,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:45,088 INFO L134 CoverageAnalysis]: Checked inductivity of 987 backedges. 453 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2022-11-18 18:40:45,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:45,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399855529] [2022-11-18 18:40:45,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399855529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:45,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:45,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:40:45,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153513187] [2022-11-18 18:40:45,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:45,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:40:45,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:45,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:40:45,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:40:45,092 INFO L87 Difference]: Start difference. First operand 160986 states and 170032 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:49,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:49,589 INFO L93 Difference]: Finished difference Result 303059 states and 320766 transitions. [2022-11-18 18:40:49,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:40:49,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 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 576 [2022-11-18 18:40:49,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:49,773 INFO L225 Difference]: With dead ends: 303059 [2022-11-18 18:40:49,774 INFO L226 Difference]: Without dead ends: 160970 [2022-11-18 18:40:49,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:40:49,833 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 1600 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:49,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1600 Valid, 290 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1457 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-18 18:40:49,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160970 states.