./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 065db717d2cdf97087f1b115414109818504267e957198e710d38901ef11a98a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 17:31:35,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:31:35,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:31:35,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:31:35,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:31:35,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:31:35,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:31:35,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:31:35,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:31:35,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:31:35,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:31:35,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:31:35,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:31:35,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:31:35,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:31:35,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:31:35,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:31:35,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:31:35,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:31:35,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:31:35,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:31:35,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:31:35,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:31:35,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:31:35,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:31:35,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:31:35,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:31:35,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:31:35,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:31:35,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:31:35,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:31:35,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:31:35,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:31:35,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:31:35,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:31:35,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:31:35,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:31:35,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:31:35,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:31:35,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:31:35,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:31:35,534 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 17:31:35,572 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:31:35,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:31:35,573 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:31:35,574 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:31:35,574 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:31:35,575 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:31:35,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:31:35,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:31:35,576 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:31:35,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:31:35,578 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:31:35,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:31:35,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:31:35,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:31:35,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:31:35,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:31:35,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:31:35,579 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:31:35,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:31:35,580 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:31:35,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:31:35,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:31:35,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:31:35,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:31:35,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:31:35,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:31:35,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:31:35,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:31:35,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:31:35,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:31:35,582 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:31:35,583 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:31:35,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:31:35,583 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_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 065db717d2cdf97087f1b115414109818504267e957198e710d38901ef11a98a [2022-11-21 17:31:35,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:31:35,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:31:35,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:31:35,915 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:31:35,915 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:31:35,917 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c [2022-11-21 17:31:38,927 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:31:39,572 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:31:39,572 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c [2022-11-21 17:31:39,603 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/data/c42c0e9a1/1ef2d4ff910e4caaa3e051c3dfa2e9d1/FLAGc78147d1a [2022-11-21 17:31:39,625 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/data/c42c0e9a1/1ef2d4ff910e4caaa3e051c3dfa2e9d1 [2022-11-21 17:31:39,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:31:39,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:31:39,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:31:39,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:31:39,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:31:39,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:31:39" (1/1) ... [2022-11-21 17:31:39,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4174632b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:31:39, skipping insertion in model container [2022-11-21 17:31:39,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:31:39" (1/1) ... [2022-11-21 17:31:39,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:31:39,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:31:40,146 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c[11640,11653] [2022-11-21 17:31:40,207 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c[15147,15160] [2022-11-21 17:31:41,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:31:41,286 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:31:41,331 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c[11640,11653] [2022-11-21 17:31:41,338 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c[15147,15160] [2022-11-21 17:31:41,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:31:42,012 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:31:42,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:31:42 WrapperNode [2022-11-21 17:31:42,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:31:42,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:31:42,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:31:42,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:31:42,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:31:42" (1/1) ... [2022-11-21 17:31:42,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:31:42" (1/1) ... [2022-11-21 17:31:42,549 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5070 [2022-11-21 17:31:42,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:31:42,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:31:42,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:31:42,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:31:42,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:31:42" (1/1) ... [2022-11-21 17:31:42,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:31:42" (1/1) ... [2022-11-21 17:31:42,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:31:42" (1/1) ... [2022-11-21 17:31:42,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:31:42" (1/1) ... [2022-11-21 17:31:42,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:31:42" (1/1) ... [2022-11-21 17:31:42,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:31:42" (1/1) ... [2022-11-21 17:31:42,909 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:31:42" (1/1) ... [2022-11-21 17:31:42,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:31:42" (1/1) ... [2022-11-21 17:31:42,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:31:43,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:31:43,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:31:43,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:31:43,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:31:42" (1/1) ... [2022-11-21 17:31:43,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:31:43,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:31:43,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:31:43,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:31:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:31:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:31:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:31:43,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:31:43,233 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:31:43,235 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:31:48,412 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:31:48,430 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:31:48,431 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 17:31:48,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:31:48 BoogieIcfgContainer [2022-11-21 17:31:48,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:31:48,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:31:48,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:31:48,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:31:48,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:31:39" (1/3) ... [2022-11-21 17:31:48,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205abfa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:31:48, skipping insertion in model container [2022-11-21 17:31:48,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:31:42" (2/3) ... [2022-11-21 17:31:48,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205abfa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:31:48, skipping insertion in model container [2022-11-21 17:31:48,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:31:48" (3/3) ... [2022-11-21 17:31:48,444 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c [2022-11-21 17:31:48,478 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:31:48,478 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-21 17:31:48,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:31:48,575 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;@70b024eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:31:48,575 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-21 17:31:48,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:48,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:31:48,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:48,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:48,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:31:48,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:48,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1798739915, now seen corresponding path program 1 times [2022-11-21 17:31:48,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:48,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491958022] [2022-11-21 17:31:48,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:48,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:48,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:48,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491958022] [2022-11-21 17:31:48,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491958022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:31:48,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:31:48,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:31:48,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820287315] [2022-11-21 17:31:48,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:48,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 17:31:48,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:48,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 17:31:48,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 17:31:48,945 INFO L87 Difference]: Start difference. First operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 0 states have call successors, (0), 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 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:49,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:49,044 INFO L93 Difference]: Finished difference Result 1761 states and 3344 transitions. [2022-11-21 17:31:49,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 17:31:49,047 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-21 17:31:49,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:49,067 INFO L225 Difference]: With dead ends: 1761 [2022-11-21 17:31:49,068 INFO L226 Difference]: Without dead ends: 833 [2022-11-21 17:31:49,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 17:31:49,077 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:49,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:31:49,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-11-21 17:31:49,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2022-11-21 17:31:49,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 831 states have (on average 1.8941034897713598) internal successors, (1574), 832 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:49,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1574 transitions. [2022-11-21 17:31:49,161 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1574 transitions. Word has length 24 [2022-11-21 17:31:49,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:31:49,162 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1574 transitions. [2022-11-21 17:31:49,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:49,162 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1574 transitions. [2022-11-21 17:31:49,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:31:49,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:49,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:49,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:31:49,164 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:31:49,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:49,165 INFO L85 PathProgramCache]: Analyzing trace with hash 502082675, now seen corresponding path program 1 times [2022-11-21 17:31:49,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:49,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476086317] [2022-11-21 17:31:49,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:49,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:49,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:49,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476086317] [2022-11-21 17:31:49,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476086317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:31:49,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:31:49,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:31:49,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081442314] [2022-11-21 17:31:49,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:49,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:31:49,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:49,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:31:49,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:31:49,462 INFO L87 Difference]: Start difference. First operand 833 states and 1574 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:49,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:49,666 INFO L93 Difference]: Finished difference Result 879 states and 1645 transitions. [2022-11-21 17:31:49,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:31:49,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-21 17:31:49,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:49,672 INFO L225 Difference]: With dead ends: 879 [2022-11-21 17:31:49,672 INFO L226 Difference]: Without dead ends: 833 [2022-11-21 17:31:49,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:31:49,675 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 3 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6254 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:49,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6254 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:31:49,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-11-21 17:31:49,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2022-11-21 17:31:49,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 831 states have (on average 1.8567990373044525) internal successors, (1543), 832 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:49,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1543 transitions. [2022-11-21 17:31:49,725 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1543 transitions. Word has length 24 [2022-11-21 17:31:49,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:31:49,726 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1543 transitions. [2022-11-21 17:31:49,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:49,727 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1543 transitions. [2022-11-21 17:31:49,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-21 17:31:49,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:49,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:49,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:31:49,736 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:31:49,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:49,739 INFO L85 PathProgramCache]: Analyzing trace with hash 206256813, now seen corresponding path program 1 times [2022-11-21 17:31:49,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:49,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652507681] [2022-11-21 17:31:49,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:49,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:49,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:49,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652507681] [2022-11-21 17:31:49,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652507681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:31:49,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:31:49,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:31:49,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567130272] [2022-11-21 17:31:49,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:49,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:31:49,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:49,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:31:49,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:31:49,888 INFO L87 Difference]: Start difference. First operand 833 states and 1543 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:54,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:54,641 INFO L93 Difference]: Finished difference Result 2337 states and 4416 transitions. [2022-11-21 17:31:54,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:31:54,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-11-21 17:31:54,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:54,648 INFO L225 Difference]: With dead ends: 2337 [2022-11-21 17:31:54,648 INFO L226 Difference]: Without dead ends: 1584 [2022-11-21 17:31:54,649 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 [2022-11-21 17:31:54,650 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 943 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:54,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 219 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-21 17:31:54,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2022-11-21 17:31:54,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1584. [2022-11-21 17:31:54,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1582 states have (on average 1.8217446270543616) internal successors, (2882), 1583 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:54,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2882 transitions. [2022-11-21 17:31:54,694 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2882 transitions. Word has length 30 [2022-11-21 17:31:54,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:31:54,694 INFO L495 AbstractCegarLoop]: Abstraction has 1584 states and 2882 transitions. [2022-11-21 17:31:54,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:54,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2882 transitions. [2022-11-21 17:31:54,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-21 17:31:54,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:54,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:54,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:31:54,697 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:31:54,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:54,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1518044022, now seen corresponding path program 1 times [2022-11-21 17:31:54,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:54,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732183794] [2022-11-21 17:31:54,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:54,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:54,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:54,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:54,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732183794] [2022-11-21 17:31:54,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732183794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:31:54,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:31:54,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:31:54,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131666111] [2022-11-21 17:31:54,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:54,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:31:54,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:54,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:31:54,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:31:54,894 INFO L87 Difference]: Start difference. First operand 1584 states and 2882 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:55,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:55,175 INFO L93 Difference]: Finished difference Result 2004 states and 3552 transitions. [2022-11-21 17:31:55,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:31:55,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-11-21 17:31:55,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:55,184 INFO L225 Difference]: With dead ends: 2004 [2022-11-21 17:31:55,185 INFO L226 Difference]: Without dead ends: 1962 [2022-11-21 17:31:55,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:31:55,187 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 7953 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7953 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:55,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7953 Valid, 2746 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:31:55,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2022-11-21 17:31:55,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1624. [2022-11-21 17:31:55,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1622 states have (on average 1.816276202219482) internal successors, (2946), 1623 states have internal predecessors, (2946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:55,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2946 transitions. [2022-11-21 17:31:55,253 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2946 transitions. Word has length 54 [2022-11-21 17:31:55,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:31:55,254 INFO L495 AbstractCegarLoop]: Abstraction has 1624 states and 2946 transitions. [2022-11-21 17:31:55,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:55,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2946 transitions. [2022-11-21 17:31:55,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-21 17:31:55,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:55,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:55,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:31:55,258 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:31:55,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:55,259 INFO L85 PathProgramCache]: Analyzing trace with hash 32878714, now seen corresponding path program 1 times [2022-11-21 17:31:55,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:55,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905683146] [2022-11-21 17:31:55,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:55,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:55,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:55,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905683146] [2022-11-21 17:31:55,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905683146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:31:55,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:31:55,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:31:55,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365561836] [2022-11-21 17:31:55,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:55,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:31:55,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:55,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:31:55,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:31:55,452 INFO L87 Difference]: Start difference. First operand 1624 states and 2946 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:55,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:55,519 INFO L93 Difference]: Finished difference Result 1777 states and 3189 transitions. [2022-11-21 17:31:55,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:31:55,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-21 17:31:55,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:55,529 INFO L225 Difference]: With dead ends: 1777 [2022-11-21 17:31:55,530 INFO L226 Difference]: Without dead ends: 1695 [2022-11-21 17:31:55,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:31:55,532 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 1482 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:55,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1603 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:31:55,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2022-11-21 17:31:55,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1693. [2022-11-21 17:31:55,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1691 states have (on average 1.8060319337670019) internal successors, (3054), 1692 states have internal predecessors, (3054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:55,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 3054 transitions. [2022-11-21 17:31:55,604 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 3054 transitions. Word has length 56 [2022-11-21 17:31:55,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:31:55,605 INFO L495 AbstractCegarLoop]: Abstraction has 1693 states and 3054 transitions. [2022-11-21 17:31:55,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:55,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 3054 transitions. [2022-11-21 17:31:55,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-21 17:31:55,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:55,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:55,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:31:55,607 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:31:55,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:55,608 INFO L85 PathProgramCache]: Analyzing trace with hash 99372226, now seen corresponding path program 1 times [2022-11-21 17:31:55,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:55,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745759440] [2022-11-21 17:31:55,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:55,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:55,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:55,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:55,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745759440] [2022-11-21 17:31:55,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745759440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:31:55,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:31:55,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:31:55,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142640241] [2022-11-21 17:31:55,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:55,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:31:55,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:55,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:31:55,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:31:55,975 INFO L87 Difference]: Start difference. First operand 1693 states and 3054 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:56,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:56,230 INFO L93 Difference]: Finished difference Result 1846 states and 3294 transitions. [2022-11-21 17:31:56,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:31:56,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-21 17:31:56,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:56,238 INFO L225 Difference]: With dead ends: 1846 [2022-11-21 17:31:56,238 INFO L226 Difference]: Without dead ends: 1695 [2022-11-21 17:31:56,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:31:56,244 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 3114 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3114 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:56,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3114 Valid, 1798 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:31:56,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2022-11-21 17:31:56,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1693. [2022-11-21 17:31:56,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1691 states have (on average 1.8048492016558249) internal successors, (3052), 1692 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:56,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 3052 transitions. [2022-11-21 17:31:56,306 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 3052 transitions. Word has length 56 [2022-11-21 17:31:56,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:31:56,309 INFO L495 AbstractCegarLoop]: Abstraction has 1693 states and 3052 transitions. [2022-11-21 17:31:56,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:56,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 3052 transitions. [2022-11-21 17:31:56,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-21 17:31:56,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:56,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:56,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:31:56,312 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:31:56,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:56,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1629151369, now seen corresponding path program 1 times [2022-11-21 17:31:56,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:56,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233439555] [2022-11-21 17:31:56,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:56,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:56,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:56,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:56,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233439555] [2022-11-21 17:31:56,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233439555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:31:56,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:31:56,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 17:31:56,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782181769] [2022-11-21 17:31:56,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:56,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:31:56,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:56,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:31:56,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:31:56,734 INFO L87 Difference]: Start difference. First operand 1693 states and 3052 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:56,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:56,962 INFO L93 Difference]: Finished difference Result 1841 states and 3279 transitions. [2022-11-21 17:31:56,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 17:31:56,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-21 17:31:56,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:56,973 INFO L225 Difference]: With dead ends: 1841 [2022-11-21 17:31:56,973 INFO L226 Difference]: Without dead ends: 1839 [2022-11-21 17:31:56,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-21 17:31:56,977 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 394 mSDsluCounter, 9035 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 10633 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:56,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 10633 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:31:56,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2022-11-21 17:31:57,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1699. [2022-11-21 17:31:57,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1697 states have (on average 1.8014142604596346) internal successors, (3057), 1698 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:57,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 3057 transitions. [2022-11-21 17:31:57,043 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 3057 transitions. Word has length 57 [2022-11-21 17:31:57,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:31:57,043 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 3057 transitions. [2022-11-21 17:31:57,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:57,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 3057 transitions. [2022-11-21 17:31:57,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-21 17:31:57,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:57,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:57,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:31:57,046 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:31:57,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:57,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1409361730, now seen corresponding path program 1 times [2022-11-21 17:31:57,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:57,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907033334] [2022-11-21 17:31:57,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:57,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:57,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:57,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907033334] [2022-11-21 17:31:57,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907033334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:31:57,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:31:57,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:31:57,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512881367] [2022-11-21 17:31:57,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:57,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:31:57,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:57,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:31:57,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:31:57,120 INFO L87 Difference]: Start difference. First operand 1699 states and 3057 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:57,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:57,186 INFO L93 Difference]: Finished difference Result 1869 states and 3318 transitions. [2022-11-21 17:31:57,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:31:57,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-21 17:31:57,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:57,194 INFO L225 Difference]: With dead ends: 1869 [2022-11-21 17:31:57,194 INFO L226 Difference]: Without dead ends: 1781 [2022-11-21 17:31:57,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:31:57,199 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 1496 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:57,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:31:57,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2022-11-21 17:31:57,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1779. [2022-11-21 17:31:57,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1777 states have (on average 1.7884074282498592) internal successors, (3178), 1778 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:57,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 3178 transitions. [2022-11-21 17:31:57,273 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 3178 transitions. Word has length 58 [2022-11-21 17:31:57,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:31:57,274 INFO L495 AbstractCegarLoop]: Abstraction has 1779 states and 3178 transitions. [2022-11-21 17:31:57,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:57,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 3178 transitions. [2022-11-21 17:31:57,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-21 17:31:57,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:57,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:57,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:31:57,279 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:31:57,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:57,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1383487166, now seen corresponding path program 1 times [2022-11-21 17:31:57,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:57,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416207526] [2022-11-21 17:31:57,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:57,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:57,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:57,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:57,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416207526] [2022-11-21 17:31:57,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416207526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:31:57,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:31:57,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:31:57,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580837587] [2022-11-21 17:31:57,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:57,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:31:57,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:57,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:31:57,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:31:57,360 INFO L87 Difference]: Start difference. First operand 1779 states and 3178 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:57,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:57,516 INFO L93 Difference]: Finished difference Result 2225 states and 3858 transitions. [2022-11-21 17:31:57,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:31:57,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-21 17:31:57,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:57,525 INFO L225 Difference]: With dead ends: 2225 [2022-11-21 17:31:57,525 INFO L226 Difference]: Without dead ends: 1990 [2022-11-21 17:31:57,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:31:57,529 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1492 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:57,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:31:57,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2022-11-21 17:31:57,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1988. [2022-11-21 17:31:57,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1988 states, 1986 states have (on average 1.75730110775428) internal successors, (3490), 1987 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:57,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 3490 transitions. [2022-11-21 17:31:57,640 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 3490 transitions. Word has length 58 [2022-11-21 17:31:57,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:31:57,640 INFO L495 AbstractCegarLoop]: Abstraction has 1988 states and 3490 transitions. [2022-11-21 17:31:57,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:57,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 3490 transitions. [2022-11-21 17:31:57,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-21 17:31:57,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:57,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:57,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:31:57,642 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:31:57,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:57,643 INFO L85 PathProgramCache]: Analyzing trace with hash 696011330, now seen corresponding path program 1 times [2022-11-21 17:31:57,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:57,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16410617] [2022-11-21 17:31:57,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:57,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:57,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:57,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:57,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16410617] [2022-11-21 17:31:57,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16410617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:31:57,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:31:57,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:31:57,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926178524] [2022-11-21 17:31:57,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:57,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:31:57,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:57,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:31:57,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:31:57,708 INFO L87 Difference]: Start difference. First operand 1988 states and 3490 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:57,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:57,875 INFO L93 Difference]: Finished difference Result 2828 states and 4752 transitions. [2022-11-21 17:31:57,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:31:57,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-21 17:31:57,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:57,885 INFO L225 Difference]: With dead ends: 2828 [2022-11-21 17:31:57,886 INFO L226 Difference]: Without dead ends: 2384 [2022-11-21 17:31:57,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:31:57,888 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 1490 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:57,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1665 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:31:57,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2022-11-21 17:31:58,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 2382. [2022-11-21 17:31:58,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2380 states have (on average 1.7084033613445377) internal successors, (4066), 2381 states have internal predecessors, (4066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:58,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 4066 transitions. [2022-11-21 17:31:58,073 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 4066 transitions. Word has length 58 [2022-11-21 17:31:58,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:31:58,074 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 4066 transitions. [2022-11-21 17:31:58,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:58,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 4066 transitions. [2022-11-21 17:31:58,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-21 17:31:58,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:58,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:58,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:31:58,076 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:31:58,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:58,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1818023102, now seen corresponding path program 1 times [2022-11-21 17:31:58,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:58,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128913866] [2022-11-21 17:31:58,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:58,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:58,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:58,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:58,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128913866] [2022-11-21 17:31:58,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128913866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:31:58,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:31:58,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:31:58,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401698066] [2022-11-21 17:31:58,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:58,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:31:58,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:58,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:31:58,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:31:58,134 INFO L87 Difference]: Start difference. First operand 2382 states and 4066 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:58,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:58,449 INFO L93 Difference]: Finished difference Result 3962 states and 6396 transitions. [2022-11-21 17:31:58,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:31:58,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-21 17:31:58,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:58,463 INFO L225 Difference]: With dead ends: 3962 [2022-11-21 17:31:58,463 INFO L226 Difference]: Without dead ends: 3124 [2022-11-21 17:31:58,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:31:58,467 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 1488 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:58,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1667 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:31:58,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2022-11-21 17:31:58,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 3122. [2022-11-21 17:31:58,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3122 states, 3120 states have (on average 1.6416666666666666) internal successors, (5122), 3121 states have internal predecessors, (5122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:58,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3122 states to 3122 states and 5122 transitions. [2022-11-21 17:31:58,851 INFO L78 Accepts]: Start accepts. Automaton has 3122 states and 5122 transitions. Word has length 58 [2022-11-21 17:31:58,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:31:58,852 INFO L495 AbstractCegarLoop]: Abstraction has 3122 states and 5122 transitions. [2022-11-21 17:31:58,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:58,852 INFO L276 IsEmpty]: Start isEmpty. Operand 3122 states and 5122 transitions. [2022-11-21 17:31:58,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-21 17:31:58,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:58,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:58,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:31:58,854 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:31:58,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:58,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1673218114, now seen corresponding path program 1 times [2022-11-21 17:31:58,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:31:58,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204689629] [2022-11-21 17:31:58,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:58,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:31:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:58,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:58,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:31:58,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204689629] [2022-11-21 17:31:58,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204689629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:31:58,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:31:58,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:31:58,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576131940] [2022-11-21 17:31:58,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:58,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:31:58,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:58,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:31:58,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:31:58,927 INFO L87 Difference]: Start difference. First operand 3122 states and 5122 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:59,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:59,522 INFO L93 Difference]: Finished difference Result 6086 states and 9396 transitions. [2022-11-21 17:31:59,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:31:59,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-21 17:31:59,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:59,540 INFO L225 Difference]: With dead ends: 6086 [2022-11-21 17:31:59,540 INFO L226 Difference]: Without dead ends: 4508 [2022-11-21 17:31:59,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:31:59,544 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 1494 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:59,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1669 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:31:59,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4508 states. [2022-11-21 17:32:00,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4508 to 4506. [2022-11-21 17:32:00,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 4504 states have (on average 1.5634991119005328) internal successors, (7042), 4505 states have internal predecessors, (7042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:00,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 7042 transitions. [2022-11-21 17:32:00,091 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 7042 transitions. Word has length 58 [2022-11-21 17:32:00,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:00,092 INFO L495 AbstractCegarLoop]: Abstraction has 4506 states and 7042 transitions. [2022-11-21 17:32:00,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:00,093 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 7042 transitions. [2022-11-21 17:32:00,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 17:32:00,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:00,101 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 17:32:00,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:32:00,101 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:32:00,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:00,102 INFO L85 PathProgramCache]: Analyzing trace with hash 273219202, now seen corresponding path program 1 times [2022-11-21 17:32:00,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:32:00,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836451241] [2022-11-21 17:32:00,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:32:00,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:32:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:00,299 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 17:32:00,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:32:00,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836451241] [2022-11-21 17:32:00,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836451241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:32:00,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:32:00,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:32:00,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066423336] [2022-11-21 17:32:00,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:32:00,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:32:00,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:32:00,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:32:00,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:32:00,302 INFO L87 Difference]: Start difference. First operand 4506 states and 7042 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:03,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:03,297 INFO L93 Difference]: Finished difference Result 19110 states and 27848 transitions. [2022-11-21 17:32:03,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:32:03,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 77 [2022-11-21 17:32:03,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:03,359 INFO L225 Difference]: With dead ends: 19110 [2022-11-21 17:32:03,360 INFO L226 Difference]: Without dead ends: 16996 [2022-11-21 17:32:03,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:32:03,368 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 6308 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6308 SdHoareTripleChecker+Valid, 3568 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:03,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6308 Valid, 3568 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:32:03,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16996 states. [2022-11-21 17:32:04,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16996 to 7050. [2022-11-21 17:32:04,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7050 states, 7048 states have (on average 1.507661748013621) internal successors, (10626), 7049 states have internal predecessors, (10626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:04,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7050 states to 7050 states and 10626 transitions. [2022-11-21 17:32:04,736 INFO L78 Accepts]: Start accepts. Automaton has 7050 states and 10626 transitions. Word has length 77 [2022-11-21 17:32:04,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:04,737 INFO L495 AbstractCegarLoop]: Abstraction has 7050 states and 10626 transitions. [2022-11-21 17:32:04,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:04,737 INFO L276 IsEmpty]: Start isEmpty. Operand 7050 states and 10626 transitions. [2022-11-21 17:32:04,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 17:32:04,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:04,741 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 17:32:04,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 17:32:04,742 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:32:04,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:04,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1775337602, now seen corresponding path program 1 times [2022-11-21 17:32:04,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:32:04,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882932895] [2022-11-21 17:32:04,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:32:04,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:32:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:04,979 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 17:32:04,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:32:04,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882932895] [2022-11-21 17:32:04,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882932895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:32:04,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:32:04,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:32:04,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478736121] [2022-11-21 17:32:04,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:32:04,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:32:04,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:32:04,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:32:04,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:32:04,982 INFO L87 Difference]: Start difference. First operand 7050 states and 10626 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:07,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:07,636 INFO L93 Difference]: Finished difference Result 22070 states and 32040 transitions. [2022-11-21 17:32:07,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:32:07,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-21 17:32:07,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:07,682 INFO L225 Difference]: With dead ends: 22070 [2022-11-21 17:32:07,682 INFO L226 Difference]: Without dead ends: 19108 [2022-11-21 17:32:07,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:32:07,693 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 6354 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6354 SdHoareTripleChecker+Valid, 3597 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:07,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6354 Valid, 3597 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:32:07,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19108 states. [2022-11-21 17:32:09,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19108 to 11066. [2022-11-21 17:32:09,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11066 states, 11064 states have (on average 1.4708966015907448) internal successors, (16274), 11065 states have internal predecessors, (16274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:09,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11066 states to 11066 states and 16274 transitions. [2022-11-21 17:32:09,485 INFO L78 Accepts]: Start accepts. Automaton has 11066 states and 16274 transitions. Word has length 77 [2022-11-21 17:32:09,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:09,485 INFO L495 AbstractCegarLoop]: Abstraction has 11066 states and 16274 transitions. [2022-11-21 17:32:09,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:09,486 INFO L276 IsEmpty]: Start isEmpty. Operand 11066 states and 16274 transitions. [2022-11-21 17:32:09,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 17:32:09,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:09,490 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 17:32:09,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 17:32:09,490 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:32:09,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:09,491 INFO L85 PathProgramCache]: Analyzing trace with hash -440131198, now seen corresponding path program 1 times [2022-11-21 17:32:09,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:32:09,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755459506] [2022-11-21 17:32:09,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:32:09,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:32:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:09,696 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-21 17:32:09,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:32:09,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755459506] [2022-11-21 17:32:09,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755459506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:32:09,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:32:09,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:32:09,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413369308] [2022-11-21 17:32:09,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:32:09,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:32:09,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:32:09,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:32:09,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:32:09,699 INFO L87 Difference]: Start difference. First operand 11066 states and 16274 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:12,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:12,443 INFO L93 Difference]: Finished difference Result 25030 states and 36216 transitions. [2022-11-21 17:32:12,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:32:12,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 77 [2022-11-21 17:32:12,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:12,494 INFO L225 Difference]: With dead ends: 25030 [2022-11-21 17:32:12,495 INFO L226 Difference]: Without dead ends: 22068 [2022-11-21 17:32:12,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:32:12,505 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6398 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6398 SdHoareTripleChecker+Valid, 3578 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:12,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6398 Valid, 3578 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:32:12,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22068 states. [2022-11-21 17:32:14,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22068 to 14026. [2022-11-21 17:32:14,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14026 states, 14024 states have (on average 1.4582144894466629) internal successors, (20450), 14025 states have internal predecessors, (20450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:14,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14026 states to 14026 states and 20450 transitions. [2022-11-21 17:32:14,422 INFO L78 Accepts]: Start accepts. Automaton has 14026 states and 20450 transitions. Word has length 77 [2022-11-21 17:32:14,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:14,422 INFO L495 AbstractCegarLoop]: Abstraction has 14026 states and 20450 transitions. [2022-11-21 17:32:14,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:14,423 INFO L276 IsEmpty]: Start isEmpty. Operand 14026 states and 20450 transitions. [2022-11-21 17:32:14,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 17:32:14,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:14,426 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 17:32:14,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 17:32:14,426 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:32:14,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:14,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1340801666, now seen corresponding path program 1 times [2022-11-21 17:32:14,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:32:14,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201653191] [2022-11-21 17:32:14,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:32:14,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:32:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:14,621 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 17:32:14,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:32:14,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201653191] [2022-11-21 17:32:14,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201653191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:32:14,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:32:14,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:32:14,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450355639] [2022-11-21 17:32:14,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:32:14,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:32:14,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:32:14,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:32:14,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:32:14,626 INFO L87 Difference]: Start difference. First operand 14026 states and 20450 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:18,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:18,213 INFO L93 Difference]: Finished difference Result 27990 states and 40392 transitions. [2022-11-21 17:32:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:32:18,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-21 17:32:18,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:18,277 INFO L225 Difference]: With dead ends: 27990 [2022-11-21 17:32:18,278 INFO L226 Difference]: Without dead ends: 25028 [2022-11-21 17:32:18,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:32:18,289 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6356 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6356 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:18,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6356 Valid, 3604 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:32:18,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25028 states. [2022-11-21 17:32:20,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25028 to 16986. [2022-11-21 17:32:20,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16986 states, 16984 states have (on average 1.4499528968440885) internal successors, (24626), 16985 states have internal predecessors, (24626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16986 states to 16986 states and 24626 transitions. [2022-11-21 17:32:20,369 INFO L78 Accepts]: Start accepts. Automaton has 16986 states and 24626 transitions. Word has length 77 [2022-11-21 17:32:20,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:20,370 INFO L495 AbstractCegarLoop]: Abstraction has 16986 states and 24626 transitions. [2022-11-21 17:32:20,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:20,370 INFO L276 IsEmpty]: Start isEmpty. Operand 16986 states and 24626 transitions. [2022-11-21 17:32:20,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 17:32:20,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:20,374 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 17:32:20,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 17:32:20,374 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:32:20,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:20,375 INFO L85 PathProgramCache]: Analyzing trace with hash 537075586, now seen corresponding path program 1 times [2022-11-21 17:32:20,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:32:20,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609094624] [2022-11-21 17:32:20,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:32:20,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:32:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 17:32:20,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:32:20,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609094624] [2022-11-21 17:32:20,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609094624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:32:20,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:32:20,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:32:20,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021213138] [2022-11-21 17:32:20,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:32:20,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:32:20,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:32:20,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:32:20,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:32:20,547 INFO L87 Difference]: Start difference. First operand 16986 states and 24626 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:24,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:24,555 INFO L93 Difference]: Finished difference Result 30950 states and 44568 transitions. [2022-11-21 17:32:24,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:32:24,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-21 17:32:24,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:24,622 INFO L225 Difference]: With dead ends: 30950 [2022-11-21 17:32:24,622 INFO L226 Difference]: Without dead ends: 27988 [2022-11-21 17:32:24,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:32:24,634 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 6310 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6310 SdHoareTripleChecker+Valid, 3684 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:24,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6310 Valid, 3684 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:32:24,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27988 states. [2022-11-21 17:32:27,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27988 to 19946. [2022-11-21 17:32:27,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19946 states, 19944 states have (on average 1.4441436020858403) internal successors, (28802), 19945 states have internal predecessors, (28802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:27,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19946 states to 19946 states and 28802 transitions. [2022-11-21 17:32:27,449 INFO L78 Accepts]: Start accepts. Automaton has 19946 states and 28802 transitions. Word has length 77 [2022-11-21 17:32:27,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:27,449 INFO L495 AbstractCegarLoop]: Abstraction has 19946 states and 28802 transitions. [2022-11-21 17:32:27,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:27,450 INFO L276 IsEmpty]: Start isEmpty. Operand 19946 states and 28802 transitions. [2022-11-21 17:32:27,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-21 17:32:27,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:27,454 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 17:32:27,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 17:32:27,455 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:32:27,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:27,455 INFO L85 PathProgramCache]: Analyzing trace with hash 895246760, now seen corresponding path program 1 times [2022-11-21 17:32:27,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:32:27,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556065762] [2022-11-21 17:32:27,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:32:27,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:32:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:27,568 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:32:27,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:32:27,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556065762] [2022-11-21 17:32:27,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556065762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:32:27,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:32:27,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:32:27,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099960652] [2022-11-21 17:32:27,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:32:27,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:32:27,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:32:27,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:32:27,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:32:27,571 INFO L87 Difference]: Start difference. First operand 19946 states and 28802 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2022-11-21 17:32:30,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:30,048 INFO L93 Difference]: Finished difference Result 38350 states and 54788 transitions. [2022-11-21 17:32:30,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:32:30,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 [2022-11-21 17:32:30,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:30,077 INFO L225 Difference]: With dead ends: 38350 [2022-11-21 17:32:30,077 INFO L226 Difference]: Without dead ends: 19948 [2022-11-21 17:32:30,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:32:30,095 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 45 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3108 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:30,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3108 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:32:30,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19948 states. [2022-11-21 17:32:33,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19948 to 19946. [2022-11-21 17:32:33,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19946 states, 19944 states have (on average 1.4293020457280385) internal successors, (28506), 19945 states have internal predecessors, (28506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:33,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19946 states to 19946 states and 28506 transitions. [2022-11-21 17:32:33,276 INFO L78 Accepts]: Start accepts. Automaton has 19946 states and 28506 transitions. Word has length 78 [2022-11-21 17:32:33,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:33,276 INFO L495 AbstractCegarLoop]: Abstraction has 19946 states and 28506 transitions. [2022-11-21 17:32:33,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2022-11-21 17:32:33,276 INFO L276 IsEmpty]: Start isEmpty. Operand 19946 states and 28506 transitions. [2022-11-21 17:32:33,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-21 17:32:33,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:33,279 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 17:32:33,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 17:32:33,279 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:32:33,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash -615640646, now seen corresponding path program 1 times [2022-11-21 17:32:33,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:32:33,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989610740] [2022-11-21 17:32:33,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:32:33,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:32:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:33,382 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:32:33,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:32:33,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989610740] [2022-11-21 17:32:33,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989610740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:32:33,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:32:33,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:32:33,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827379392] [2022-11-21 17:32:33,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:32:33,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:32:33,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:32:33,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:32:33,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:32:33,385 INFO L87 Difference]: Start difference. First operand 19946 states and 28506 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:34,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:34,753 INFO L93 Difference]: Finished difference Result 26833 states and 38200 transitions. [2022-11-21 17:32:34,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:32:34,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-11-21 17:32:34,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:34,764 INFO L225 Difference]: With dead ends: 26833 [2022-11-21 17:32:34,764 INFO L226 Difference]: Without dead ends: 8431 [2022-11-21 17:32:34,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:32:34,782 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 39 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:34,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3105 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:32:34,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8431 states. [2022-11-21 17:32:35,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8431 to 8423. [2022-11-21 17:32:35,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8423 states, 8421 states have (on average 1.4723904524403277) internal successors, (12399), 8422 states have internal predecessors, (12399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:35,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8423 states to 8423 states and 12399 transitions. [2022-11-21 17:32:35,853 INFO L78 Accepts]: Start accepts. Automaton has 8423 states and 12399 transitions. Word has length 79 [2022-11-21 17:32:35,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:35,853 INFO L495 AbstractCegarLoop]: Abstraction has 8423 states and 12399 transitions. [2022-11-21 17:32:35,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:35,854 INFO L276 IsEmpty]: Start isEmpty. Operand 8423 states and 12399 transitions. [2022-11-21 17:32:35,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-21 17:32:35,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:35,856 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 17:32:35,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 17:32:35,857 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:32:35,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:35,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1683802150, now seen corresponding path program 1 times [2022-11-21 17:32:35,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:32:35,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392443898] [2022-11-21 17:32:35,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:32:35,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:32:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:35,964 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:32:35,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:32:35,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392443898] [2022-11-21 17:32:35,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392443898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:32:35,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:32:35,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:32:35,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495244355] [2022-11-21 17:32:35,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:32:35,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:32:35,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:32:35,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:32:35,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:32:35,966 INFO L87 Difference]: Start difference. First operand 8423 states and 12399 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:36,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:36,750 INFO L93 Difference]: Finished difference Result 11859 states and 17185 transitions. [2022-11-21 17:32:36,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:32:36,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-21 17:32:36,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:36,758 INFO L225 Difference]: With dead ends: 11859 [2022-11-21 17:32:36,758 INFO L226 Difference]: Without dead ends: 4993 [2022-11-21 17:32:36,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:32:36,765 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 41 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:36,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3084 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:32:36,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4993 states. [2022-11-21 17:32:37,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4993 to 4991. [2022-11-21 17:32:37,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4991 states, 4989 states have (on average 1.5159350571256764) internal successors, (7563), 4990 states have internal predecessors, (7563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:37,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4991 states to 4991 states and 7563 transitions. [2022-11-21 17:32:37,344 INFO L78 Accepts]: Start accepts. Automaton has 4991 states and 7563 transitions. Word has length 80 [2022-11-21 17:32:37,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:37,345 INFO L495 AbstractCegarLoop]: Abstraction has 4991 states and 7563 transitions. [2022-11-21 17:32:37,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:37,345 INFO L276 IsEmpty]: Start isEmpty. Operand 4991 states and 7563 transitions. [2022-11-21 17:32:37,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-21 17:32:37,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:37,347 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 17:32:37,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 17:32:37,348 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:32:37,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:37,348 INFO L85 PathProgramCache]: Analyzing trace with hash 263472268, now seen corresponding path program 1 times [2022-11-21 17:32:37,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:32:37,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211004261] [2022-11-21 17:32:37,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:32:37,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:32:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:32:37,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:32:37,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211004261] [2022-11-21 17:32:37,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211004261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:32:37,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:32:37,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:32:37,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414733250] [2022-11-21 17:32:37,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:32:37,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:32:37,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:32:37,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:32:37,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:32:37,449 INFO L87 Difference]: Start difference. First operand 4991 states and 7563 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:37,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:37,728 INFO L93 Difference]: Finished difference Result 6711 states and 9931 transitions. [2022-11-21 17:32:37,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:32:37,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-11-21 17:32:37,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:37,732 INFO L225 Difference]: With dead ends: 6711 [2022-11-21 17:32:37,732 INFO L226 Difference]: Without dead ends: 3277 [2022-11-21 17:32:37,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:32:37,735 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 38 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:37,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3069 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:32:37,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2022-11-21 17:32:37,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 3275. [2022-11-21 17:32:37,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 3273 states have (on average 1.5798961197677972) internal successors, (5171), 3274 states have internal predecessors, (5171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:37,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 5171 transitions. [2022-11-21 17:32:37,996 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 5171 transitions. Word has length 82 [2022-11-21 17:32:37,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:37,996 INFO L495 AbstractCegarLoop]: Abstraction has 3275 states and 5171 transitions. [2022-11-21 17:32:37,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:37,997 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 5171 transitions. [2022-11-21 17:32:37,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-21 17:32:37,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:37,999 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 17:32:37,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 17:32:37,999 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:32:37,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:38,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1956730946, now seen corresponding path program 1 times [2022-11-21 17:32:38,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:32:38,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239928440] [2022-11-21 17:32:38,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:32:38,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:32:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:32:38,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:32:38,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239928440] [2022-11-21 17:32:38,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239928440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:32:38,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:32:38,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:32:38,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268220861] [2022-11-21 17:32:38,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:32:38,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:32:38,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:32:38,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:32:38,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:32:38,131 INFO L87 Difference]: Start difference. First operand 3275 states and 5171 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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) [2022-11-21 17:32:38,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:38,357 INFO L93 Difference]: Finished difference Result 4137 states and 6343 transitions. [2022-11-21 17:32:38,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:32:38,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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 [2022-11-21 17:32:38,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:38,361 INFO L225 Difference]: With dead ends: 4137 [2022-11-21 17:32:38,362 INFO L226 Difference]: Without dead ends: 2419 [2022-11-21 17:32:38,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:32:38,365 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 35 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:38,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3054 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:32:38,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2022-11-21 17:32:38,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 2417. [2022-11-21 17:32:38,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2417 states, 2415 states have (on average 1.6513457556935818) internal successors, (3988), 2416 states have internal predecessors, (3988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:38,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2417 states to 2417 states and 3988 transitions. [2022-11-21 17:32:38,582 INFO L78 Accepts]: Start accepts. Automaton has 2417 states and 3988 transitions. Word has length 84 [2022-11-21 17:32:38,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:38,583 INFO L495 AbstractCegarLoop]: Abstraction has 2417 states and 3988 transitions. [2022-11-21 17:32:38,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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) [2022-11-21 17:32:38,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2417 states and 3988 transitions. [2022-11-21 17:32:38,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-21 17:32:38,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:38,585 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] [2022-11-21 17:32:38,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 17:32:38,585 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:32:38,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:38,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1389986160, now seen corresponding path program 1 times [2022-11-21 17:32:38,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:32:38,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780097855] [2022-11-21 17:32:38,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:32:38,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:32:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:39,489 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:32:39,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:32:39,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780097855] [2022-11-21 17:32:39,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780097855] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:32:39,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306060338] [2022-11-21 17:32:39,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:32:39,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:32:39,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:32:39,494 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:32:39,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:32:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:39,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 17:32:39,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:32:39,931 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 17:32:39,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:32:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 17:32:40,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306060338] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:32:40,357 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:32:40,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2022-11-21 17:32:40,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735097518] [2022-11-21 17:32:40,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:32:40,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 17:32:40,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:32:40,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 17:32:40,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:32:40,360 INFO L87 Difference]: Start difference. First operand 2417 states and 3988 transitions. Second operand has 19 states, 19 states have (on average 12.68421052631579) internal successors, (241), 19 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:45,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:45,245 INFO L93 Difference]: Finished difference Result 8810 states and 12413 transitions. [2022-11-21 17:32:45,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-21 17:32:45,245 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.68421052631579) internal successors, (241), 19 states have internal predecessors, (241), 0 states have call successors, (0), 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 86 [2022-11-21 17:32:45,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:45,253 INFO L225 Difference]: With dead ends: 8810 [2022-11-21 17:32:45,254 INFO L226 Difference]: Without dead ends: 7950 [2022-11-21 17:32:45,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=659, Invalid=2881, Unknown=0, NotChecked=0, Total=3540 [2022-11-21 17:32:45,258 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 18791 mSDsluCounter, 6456 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18791 SdHoareTripleChecker+Valid, 7972 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:45,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18791 Valid, 7972 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 17:32:45,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7950 states. [2022-11-21 17:32:46,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7950 to 5753. [2022-11-21 17:32:46,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 5751 states have (on average 1.4315771170231264) internal successors, (8233), 5752 states have internal predecessors, (8233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:46,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 8233 transitions. [2022-11-21 17:32:46,071 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 8233 transitions. Word has length 86 [2022-11-21 17:32:46,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:46,071 INFO L495 AbstractCegarLoop]: Abstraction has 5753 states and 8233 transitions. [2022-11-21 17:32:46,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.68421052631579) internal successors, (241), 19 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:46,072 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 8233 transitions. [2022-11-21 17:32:46,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-21 17:32:46,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:46,074 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:32:46,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:32:46,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-21 17:32:46,280 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:32:46,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:46,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1667542172, now seen corresponding path program 1 times [2022-11-21 17:32:46,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:32:46,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555609582] [2022-11-21 17:32:46,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:32:46,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:32:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:47,495 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:32:47,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:32:47,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555609582] [2022-11-21 17:32:47,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555609582] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:32:47,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042697467] [2022-11-21 17:32:47,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:32:47,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:32:47,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:32:47,499 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:32:47,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:32:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:47,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 17:32:47,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:32:49,189 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:32:49,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:32:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:32:51,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042697467] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:32:51,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:32:51,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2022-11-21 17:32:51,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421698250] [2022-11-21 17:32:51,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:32:51,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-21 17:32:51,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:32:51,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-21 17:32:51,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1074, Unknown=0, NotChecked=0, Total=1190 [2022-11-21 17:32:51,331 INFO L87 Difference]: Start difference. First operand 5753 states and 8233 transitions. Second operand has 35 states, 35 states have (on average 6.485714285714286) internal successors, (227), 35 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) [2022-11-21 17:33:41,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:33:41,589 INFO L93 Difference]: Finished difference Result 77956 states and 100933 transitions. [2022-11-21 17:33:41,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-11-21 17:33:41,590 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.485714285714286) internal successors, (227), 35 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 87 [2022-11-21 17:33:41,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:33:41,686 INFO L225 Difference]: With dead ends: 77956 [2022-11-21 17:33:41,686 INFO L226 Difference]: Without dead ends: 73985 [2022-11-21 17:33:41,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23318 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=7220, Invalid=49662, Unknown=0, NotChecked=0, Total=56882 [2022-11-21 17:33:41,710 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 31565 mSDsluCounter, 14233 mSDsCounter, 0 mSdLazyCounter, 2801 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31565 SdHoareTripleChecker+Valid, 15869 SdHoareTripleChecker+Invalid, 3008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 2801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:33:41,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31565 Valid, 15869 Invalid, 3008 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [207 Valid, 2801 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-21 17:33:41,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73985 states. [2022-11-21 17:33:46,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73985 to 17688. [2022-11-21 17:33:46,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17688 states, 17686 states have (on average 1.3112066040936334) internal successors, (23190), 17687 states have internal predecessors, (23190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:33:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17688 states to 17688 states and 23190 transitions. [2022-11-21 17:33:46,566 INFO L78 Accepts]: Start accepts. Automaton has 17688 states and 23190 transitions. Word has length 87 [2022-11-21 17:33:46,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:33:46,567 INFO L495 AbstractCegarLoop]: Abstraction has 17688 states and 23190 transitions. [2022-11-21 17:33:46,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 6.485714285714286) internal successors, (227), 35 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) [2022-11-21 17:33:46,567 INFO L276 IsEmpty]: Start isEmpty. Operand 17688 states and 23190 transitions. [2022-11-21 17:33:46,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-21 17:33:46,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:33:46,570 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:33:46,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:33:46,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-21 17:33:46,776 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:33:46,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:33:46,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1769142018, now seen corresponding path program 1 times [2022-11-21 17:33:46,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:33:46,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824890763] [2022-11-21 17:33:46,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:33:46,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:33:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:47,818 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:33:47,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:33:47,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824890763] [2022-11-21 17:33:47,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824890763] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:33:47,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061166554] [2022-11-21 17:33:47,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:33:47,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:33:47,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:33:47,821 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:33:47,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:33:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:47,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 17:33:47,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:33:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:33:48,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:33:50,765 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:33:50,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061166554] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:33:50,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:33:50,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-11-21 17:33:50,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008930200] [2022-11-21 17:33:50,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:33:50,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-21 17:33:50,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:33:50,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-21 17:33:50,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2022-11-21 17:33:50,768 INFO L87 Difference]: Start difference. First operand 17688 states and 23190 transitions. Second operand has 32 states, 32 states have (on average 7.6875) internal successors, (246), 32 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:34:06,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:34:06,148 INFO L93 Difference]: Finished difference Result 58620 states and 73707 transitions. [2022-11-21 17:34:06,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-21 17:34:06,149 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.6875) internal successors, (246), 32 states have internal predecessors, (246), 0 states have call successors, (0), 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 88 [2022-11-21 17:34:06,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:34:06,201 INFO L225 Difference]: With dead ends: 58620 [2022-11-21 17:34:06,201 INFO L226 Difference]: Without dead ends: 44192 [2022-11-21 17:34:06,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=640, Invalid=2222, Unknown=0, NotChecked=0, Total=2862 [2022-11-21 17:34:06,212 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 9808 mSDsluCounter, 6797 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9808 SdHoareTripleChecker+Valid, 8321 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:34:06,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9808 Valid, 8321 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 17:34:06,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44192 states. [2022-11-21 17:34:15,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44192 to 33038. [2022-11-21 17:34:15,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33038 states, 33036 states have (on average 1.2747003269160915) internal successors, (42111), 33037 states have internal predecessors, (42111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:34:15,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33038 states to 33038 states and 42111 transitions. [2022-11-21 17:34:15,654 INFO L78 Accepts]: Start accepts. Automaton has 33038 states and 42111 transitions. Word has length 88 [2022-11-21 17:34:15,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:34:15,655 INFO L495 AbstractCegarLoop]: Abstraction has 33038 states and 42111 transitions. [2022-11-21 17:34:15,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.6875) internal successors, (246), 32 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:34:15,655 INFO L276 IsEmpty]: Start isEmpty. Operand 33038 states and 42111 transitions. [2022-11-21 17:34:15,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-21 17:34:15,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:34:15,658 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:34:15,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:34:15,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-21 17:34:15,864 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:34:15,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:34:15,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1728911506, now seen corresponding path program 1 times [2022-11-21 17:34:15,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:34:15,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726262494] [2022-11-21 17:34:15,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:34:15,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:34:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:34:16,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:34:16,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726262494] [2022-11-21 17:34:16,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726262494] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:34:16,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339631082] [2022-11-21 17:34:16,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:34:16,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:34:16,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:34:16,323 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:34:16,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 17:34:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:16,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 17:34:16,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:34:17,372 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:34:17,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:34:18,352 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:34:18,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339631082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:34:18,352 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:34:18,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-11-21 17:34:18,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625843171] [2022-11-21 17:34:18,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:34:18,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-21 17:34:18,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:34:18,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-21 17:34:18,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2022-11-21 17:34:18,354 INFO L87 Difference]: Start difference. First operand 33038 states and 42111 transitions. Second operand has 25 states, 25 states have (on average 9.44) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:34:41,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:34:41,864 INFO L93 Difference]: Finished difference Result 80562 states and 100985 transitions. [2022-11-21 17:34:41,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-21 17:34:41,865 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.44) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 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 88 [2022-11-21 17:34:41,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:34:41,932 INFO L225 Difference]: With dead ends: 80562 [2022-11-21 17:34:41,932 INFO L226 Difference]: Without dead ends: 51902 [2022-11-21 17:34:41,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=886, Invalid=3274, Unknown=0, NotChecked=0, Total=4160 [2022-11-21 17:34:41,955 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 20692 mSDsluCounter, 7264 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20692 SdHoareTripleChecker+Valid, 8851 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:34:41,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20692 Valid, 8851 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1439 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 17:34:41,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51902 states. [2022-11-21 17:34:52,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51902 to 29556. [2022-11-21 17:34:52,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29556 states, 29554 states have (on average 1.2630439196047911) internal successors, (37328), 29555 states have internal predecessors, (37328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:34:52,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29556 states to 29556 states and 37328 transitions. [2022-11-21 17:34:52,146 INFO L78 Accepts]: Start accepts. Automaton has 29556 states and 37328 transitions. Word has length 88 [2022-11-21 17:34:52,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:34:52,146 INFO L495 AbstractCegarLoop]: Abstraction has 29556 states and 37328 transitions. [2022-11-21 17:34:52,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.44) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:34:52,147 INFO L276 IsEmpty]: Start isEmpty. Operand 29556 states and 37328 transitions. [2022-11-21 17:34:52,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 17:34:52,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:34:52,149 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:34:52,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:34:52,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-21 17:34:52,356 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:34:52,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:34:52,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1760002960, now seen corresponding path program 1 times [2022-11-21 17:34:52,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:34:52,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205789128] [2022-11-21 17:34:52,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:34:52,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:34:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:34:52,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:34:52,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205789128] [2022-11-21 17:34:52,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205789128] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:34:52,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095833381] [2022-11-21 17:34:52,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:34:52,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:34:52,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:34:52,824 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:34:52,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30c919b3-fe59-4bde-bbfd-5409e6f26807/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 17:34:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:52,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 17:34:52,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:34:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:34:53,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:34:55,322 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:34:55,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095833381] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:34:55,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:34:55,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2022-11-21 17:34:55,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325131494] [2022-11-21 17:34:55,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:34:55,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-21 17:34:55,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:34:55,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-21 17:34:55,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2022-11-21 17:34:55,326 INFO L87 Difference]: Start difference. First operand 29556 states and 37328 transitions. Second operand has 27 states, 27 states have (on average 8.481481481481481) internal successors, (229), 27 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:35:33,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:35:33,364 INFO L93 Difference]: Finished difference Result 111910 states and 137850 transitions. [2022-11-21 17:35:33,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 17:35:33,365 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.481481481481481) internal successors, (229), 27 states have internal predecessors, (229), 0 states have call successors, (0), 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 89 [2022-11-21 17:35:33,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:35:33,472 INFO L225 Difference]: With dead ends: 111910 [2022-11-21 17:35:33,472 INFO L226 Difference]: Without dead ends: 87088 [2022-11-21 17:35:33,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=437, Invalid=1455, Unknown=0, NotChecked=0, Total=1892 [2022-11-21 17:35:33,503 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 13149 mSDsluCounter, 8225 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13149 SdHoareTripleChecker+Valid, 9787 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:35:33,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13149 Valid, 9787 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 17:35:33,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87088 states.