./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56805e27-8bd1-49c9-93d1-b4c1b5222473/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56805e27-8bd1-49c9-93d1-b4c1b5222473/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56805e27-8bd1-49c9-93d1-b4c1b5222473/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56805e27-8bd1-49c9-93d1-b4c1b5222473/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56805e27-8bd1-49c9-93d1-b4c1b5222473/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56805e27-8bd1-49c9-93d1-b4c1b5222473/bin/uautomizer-AkOaLMaTGY --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 297d4f7e6fe1324d357f4812a6556f1cd58caa692e4601779e6f52e2ab17fbf7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:07:13,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:07:13,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:07:13,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:07:13,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:07:13,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:07:13,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:07:13,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:07:13,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:07:13,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:07:13,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:07:13,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:07:13,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:07:13,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:07:13,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:07:13,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:07:13,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:07:13,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:07:13,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:07:13,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:07:13,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:07:13,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:07:13,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:07:13,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:07:13,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:07:13,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:07:13,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:07:13,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:07:13,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:07:13,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:07:13,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:07:13,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:07:13,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:07:13,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:07:13,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:07:13,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:07:13,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:07:13,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:07:13,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:07:13,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:07:13,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:07:13,534 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56805e27-8bd1-49c9-93d1-b4c1b5222473/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 08:07:13,565 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:07:13,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:07:13,566 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:07:13,566 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:07:13,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:07:13,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:07:13,568 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:07:13,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:07:13,569 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:07:13,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:07:13,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:07:13,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:07:13,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:07:13,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:07:13,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:07:13,571 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:07:13,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:07:13,571 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:07:13,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:07:13,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:07:13,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:07:13,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:07:13,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:07:13,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:07:13,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:07:13,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:07:13,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:07:13,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:07:13,575 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:07:13,575 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:07:13,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:07:13,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:07:13,576 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56805e27-8bd1-49c9-93d1-b4c1b5222473/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 297d4f7e6fe1324d357f4812a6556f1cd58caa692e4601779e6f52e2ab17fbf7 [2021-11-07 08:07:13,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:07:13,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:07:13,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:07:13,963 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:07:13,964 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:07:13,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56805e27-8bd1-49c9-93d1-b4c1b5222473/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-07 08:07:14,075 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56805e27-8bd1-49c9-93d1-b4c1b5222473/bin/uautomizer-AkOaLMaTGY/data/765d4c72d/f9ef98c969bf4f018192eb468a3b2e1f/FLAGdcac72ed8 [2021-11-07 08:07:14,908 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:07:14,908 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-07 08:07:14,950 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56805e27-8bd1-49c9-93d1-b4c1b5222473/bin/uautomizer-AkOaLMaTGY/data/765d4c72d/f9ef98c969bf4f018192eb468a3b2e1f/FLAGdcac72ed8 [2021-11-07 08:07:15,450 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56805e27-8bd1-49c9-93d1-b4c1b5222473/bin/uautomizer-AkOaLMaTGY/data/765d4c72d/f9ef98c969bf4f018192eb468a3b2e1f [2021-11-07 08:07:15,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:07:15,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:07:15,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:07:15,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:07:15,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:07:15,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:07:15" (1/1) ... [2021-11-07 08:07:15,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9e18d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:15, skipping insertion in model container [2021-11-07 08:07:15,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:07:15" (1/1) ... [2021-11-07 08:07:15,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:07:15,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:07:16,046 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16948,16961] [2021-11-07 08:07:16,117 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[23372,23385] [2021-11-07 08:07:16,142 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26559,26572] [2021-11-07 08:07:16,160 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[29535,29548] [2021-11-07 08:07:16,181 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33298,33311] [2021-11-07 08:07:16,198 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[36350,36363] [2021-11-07 08:07:16,215 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[39535,39548] [2021-11-07 08:07:16,232 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42506,42519] [2021-11-07 08:07:16,268 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[45890,45903] [2021-11-07 08:07:16,305 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[48876,48889] [2021-11-07 08:07:16,336 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[52025,52038] [2021-11-07 08:07:16,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:07:16,410 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:07:16,556 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16948,16961] [2021-11-07 08:07:16,580 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[23372,23385] [2021-11-07 08:07:16,592 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26559,26572] [2021-11-07 08:07:16,603 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[29535,29548] [2021-11-07 08:07:16,617 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33298,33311] [2021-11-07 08:07:16,628 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[36350,36363] [2021-11-07 08:07:16,639 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[39535,39548] [2021-11-07 08:07:16,651 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42506,42519] [2021-11-07 08:07:16,662 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[45890,45903] [2021-11-07 08:07:16,673 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[48876,48889] [2021-11-07 08:07:16,685 WARN L228 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_56805e27-8bd1-49c9-93d1-b4c1b5222473/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[52025,52038] [2021-11-07 08:07:16,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:07:16,740 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:07:16,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:16 WrapperNode [2021-11-07 08:07:16,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:07:16,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:07:16,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:07:16,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:07:16,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:16" (1/1) ... [2021-11-07 08:07:16,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:16" (1/1) ... [2021-11-07 08:07:16,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:07:16,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:07:16,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:07:16,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:07:16,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:16" (1/1) ... [2021-11-07 08:07:16,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:16" (1/1) ... [2021-11-07 08:07:16,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:16" (1/1) ... [2021-11-07 08:07:16,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:16" (1/1) ... [2021-11-07 08:07:17,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:16" (1/1) ... [2021-11-07 08:07:17,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:16" (1/1) ... [2021-11-07 08:07:17,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:16" (1/1) ... [2021-11-07 08:07:17,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:07:17,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:07:17,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:07:17,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:07:17,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:16" (1/1) ... [2021-11-07 08:07:17,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:07:17,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56805e27-8bd1-49c9-93d1-b4c1b5222473/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:07:17,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56805e27-8bd1-49c9-93d1-b4c1b5222473/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:07:17,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56805e27-8bd1-49c9-93d1-b4c1b5222473/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:07:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:07:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:07:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:07:17,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:07:19,898 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:07:19,898 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-07 08:07:19,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:07:19 BoogieIcfgContainer [2021-11-07 08:07:19,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:07:19,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:07:19,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:07:19,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:07:19,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:07:15" (1/3) ... [2021-11-07 08:07:19,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec70083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:07:19, skipping insertion in model container [2021-11-07 08:07:19,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:16" (2/3) ... [2021-11-07 08:07:19,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec70083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:07:19, skipping insertion in model container [2021-11-07 08:07:19,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:07:19" (3/3) ... [2021-11-07 08:07:19,918 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-07 08:07:19,932 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:07:19,932 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-07 08:07:20,030 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:07:20,048 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 08:07:20,051 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-07 08:07:20,099 INFO L276 IsEmpty]: Start isEmpty. Operand has 537 states, 525 states have (on average 1.8304761904761904) internal successors, (961), 536 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:20,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 08:07:20,137 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:20,138 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:20,141 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:07:20,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:20,149 INFO L85 PathProgramCache]: Analyzing trace with hash 702631990, now seen corresponding path program 1 times [2021-11-07 08:07:20,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:20,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082097349] [2021-11-07 08:07:20,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:20,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:20,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:20,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082097349] [2021-11-07 08:07:20,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082097349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:20,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:20,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:07:20,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51209984] [2021-11-07 08:07:20,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:07:20,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:20,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:07:20,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:07:20,836 INFO L87 Difference]: Start difference. First operand has 537 states, 525 states have (on average 1.8304761904761904) internal successors, (961), 536 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:21,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:21,484 INFO L93 Difference]: Finished difference Result 644 states and 1120 transitions. [2021-11-07 08:07:21,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:07:21,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 08:07:21,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:21,504 INFO L225 Difference]: With dead ends: 644 [2021-11-07 08:07:21,504 INFO L226 Difference]: Without dead ends: 362 [2021-11-07 08:07:21,509 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:07:21,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-11-07 08:07:21,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2021-11-07 08:07:21,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 351 states have (on average 1.2849002849002849) internal successors, (451), 361 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:21,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 451 transitions. [2021-11-07 08:07:21,587 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 451 transitions. Word has length 59 [2021-11-07 08:07:21,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:21,588 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 451 transitions. [2021-11-07 08:07:21,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:21,588 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 451 transitions. [2021-11-07 08:07:21,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 08:07:21,591 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:21,592 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:21,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:07:21,592 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:07:21,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:21,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1236705273, now seen corresponding path program 1 times [2021-11-07 08:07:21,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:21,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959782044] [2021-11-07 08:07:21,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:21,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:21,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:21,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:21,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959782044] [2021-11-07 08:07:21,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959782044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:21,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:21,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:07:21,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251631500] [2021-11-07 08:07:21,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:07:21,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:21,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:07:21,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:07:21,876 INFO L87 Difference]: Start difference. First operand 362 states and 451 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:22,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:22,281 INFO L93 Difference]: Finished difference Result 609 states and 777 transitions. [2021-11-07 08:07:22,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:07:22,282 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 08:07:22,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:22,289 INFO L225 Difference]: With dead ends: 609 [2021-11-07 08:07:22,289 INFO L226 Difference]: Without dead ends: 415 [2021-11-07 08:07:22,295 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:07:22,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-11-07 08:07:22,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 385. [2021-11-07 08:07:22,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 374 states have (on average 1.3556149732620322) internal successors, (507), 384 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:22,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 507 transitions. [2021-11-07 08:07:22,370 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 507 transitions. Word has length 59 [2021-11-07 08:07:22,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:22,371 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 507 transitions. [2021-11-07 08:07:22,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:22,371 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 507 transitions. [2021-11-07 08:07:22,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 08:07:22,373 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:22,374 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:22,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:07:22,374 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:07:22,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:22,375 INFO L85 PathProgramCache]: Analyzing trace with hash -491311835, now seen corresponding path program 1 times [2021-11-07 08:07:22,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:22,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199287336] [2021-11-07 08:07:22,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:22,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:22,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:22,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:22,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199287336] [2021-11-07 08:07:22,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199287336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:22,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:22,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:07:22,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700847528] [2021-11-07 08:07:22,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:07:22,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:22,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:07:22,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:07:22,543 INFO L87 Difference]: Start difference. First operand 385 states and 507 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:22,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:22,893 INFO L93 Difference]: Finished difference Result 763 states and 1019 transitions. [2021-11-07 08:07:22,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:07:22,894 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 08:07:22,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:22,899 INFO L225 Difference]: With dead ends: 763 [2021-11-07 08:07:22,899 INFO L226 Difference]: Without dead ends: 535 [2021-11-07 08:07:22,900 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:07:22,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-11-07 08:07:22,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 495. [2021-11-07 08:07:22,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 484 states have (on average 1.3863636363636365) internal successors, (671), 494 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:22,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 671 transitions. [2021-11-07 08:07:22,942 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 671 transitions. Word has length 59 [2021-11-07 08:07:22,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:22,943 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 671 transitions. [2021-11-07 08:07:22,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:22,944 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 671 transitions. [2021-11-07 08:07:22,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 08:07:22,946 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:22,946 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:22,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:07:22,947 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:07:22,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:22,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1229859589, now seen corresponding path program 1 times [2021-11-07 08:07:22,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:22,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855756134] [2021-11-07 08:07:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:22,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:23,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:23,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855756134] [2021-11-07 08:07:23,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855756134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:23,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:23,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:07:23,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880573025] [2021-11-07 08:07:23,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:07:23,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:23,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:07:23,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:07:23,050 INFO L87 Difference]: Start difference. First operand 495 states and 671 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:23,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:23,456 INFO L93 Difference]: Finished difference Result 1111 states and 1551 transitions. [2021-11-07 08:07:23,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:07:23,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-07 08:07:23,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:23,463 INFO L225 Difference]: With dead ends: 1111 [2021-11-07 08:07:23,464 INFO L226 Difference]: Without dead ends: 795 [2021-11-07 08:07:23,465 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:07:23,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2021-11-07 08:07:23,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 753. [2021-11-07 08:07:23,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 742 states have (on average 1.431266846361186) internal successors, (1062), 752 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:23,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1062 transitions. [2021-11-07 08:07:23,536 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1062 transitions. Word has length 60 [2021-11-07 08:07:23,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:23,537 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1062 transitions. [2021-11-07 08:07:23,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:23,537 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1062 transitions. [2021-11-07 08:07:23,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 08:07:23,539 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:23,539 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:23,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:07:23,540 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:07:23,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:23,541 INFO L85 PathProgramCache]: Analyzing trace with hash -944801897, now seen corresponding path program 1 times [2021-11-07 08:07:23,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:23,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616542471] [2021-11-07 08:07:23,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:23,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:23,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:23,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616542471] [2021-11-07 08:07:23,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616542471] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:23,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:23,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:07:23,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831547918] [2021-11-07 08:07:23,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:07:23,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:23,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:07:23,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:07:23,835 INFO L87 Difference]: Start difference. First operand 753 states and 1062 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:25,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:25,045 INFO L93 Difference]: Finished difference Result 2045 states and 3006 transitions. [2021-11-07 08:07:25,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 08:07:25,046 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-07 08:07:25,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:25,061 INFO L225 Difference]: With dead ends: 2045 [2021-11-07 08:07:25,062 INFO L226 Difference]: Without dead ends: 1623 [2021-11-07 08:07:25,064 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-07 08:07:25,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2021-11-07 08:07:25,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 753. [2021-11-07 08:07:25,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 742 states have (on average 1.4299191374663074) internal successors, (1061), 752 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:25,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1061 transitions. [2021-11-07 08:07:25,214 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1061 transitions. Word has length 61 [2021-11-07 08:07:25,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:25,215 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1061 transitions. [2021-11-07 08:07:25,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:25,215 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1061 transitions. [2021-11-07 08:07:25,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 08:07:25,218 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:25,218 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:25,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 08:07:25,219 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:07:25,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:25,220 INFO L85 PathProgramCache]: Analyzing trace with hash 448084895, now seen corresponding path program 1 times [2021-11-07 08:07:25,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:25,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121231008] [2021-11-07 08:07:25,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:25,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:25,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:25,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:25,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121231008] [2021-11-07 08:07:25,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121231008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:25,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:25,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:07:25,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404174338] [2021-11-07 08:07:25,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:07:25,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:25,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:07:25,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:07:25,424 INFO L87 Difference]: Start difference. First operand 753 states and 1061 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:26,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:26,532 INFO L93 Difference]: Finished difference Result 2173 states and 3168 transitions. [2021-11-07 08:07:26,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 08:07:26,533 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-07 08:07:26,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:26,546 INFO L225 Difference]: With dead ends: 2173 [2021-11-07 08:07:26,546 INFO L226 Difference]: Without dead ends: 1725 [2021-11-07 08:07:26,547 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-11-07 08:07:26,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2021-11-07 08:07:26,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 753. [2021-11-07 08:07:26,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 742 states have (on average 1.4285714285714286) internal successors, (1060), 752 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:26,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1060 transitions. [2021-11-07 08:07:26,656 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1060 transitions. Word has length 61 [2021-11-07 08:07:26,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:26,656 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1060 transitions. [2021-11-07 08:07:26,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:26,657 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1060 transitions. [2021-11-07 08:07:26,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 08:07:26,658 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:26,659 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:26,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 08:07:26,659 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:07:26,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:26,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1014019097, now seen corresponding path program 1 times [2021-11-07 08:07:26,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:26,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609117483] [2021-11-07 08:07:26,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:26,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:26,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:26,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:26,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609117483] [2021-11-07 08:07:26,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609117483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:26,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:26,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:07:26,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18740002] [2021-11-07 08:07:26,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:07:26,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:26,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:07:26,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:07:26,953 INFO L87 Difference]: Start difference. First operand 753 states and 1060 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:27,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:27,692 INFO L93 Difference]: Finished difference Result 1929 states and 2803 transitions. [2021-11-07 08:07:27,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 08:07:27,693 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-07 08:07:27,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:27,704 INFO L225 Difference]: With dead ends: 1929 [2021-11-07 08:07:27,705 INFO L226 Difference]: Without dead ends: 1401 [2021-11-07 08:07:27,707 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-11-07 08:07:27,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2021-11-07 08:07:27,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 753. [2021-11-07 08:07:27,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 742 states have (on average 1.4272237196765498) internal successors, (1059), 752 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:27,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1059 transitions. [2021-11-07 08:07:27,801 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1059 transitions. Word has length 61 [2021-11-07 08:07:27,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:27,803 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1059 transitions. [2021-11-07 08:07:27,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:27,803 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1059 transitions. [2021-11-07 08:07:27,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 08:07:27,806 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:27,806 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:27,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 08:07:27,807 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:07:27,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:27,807 INFO L85 PathProgramCache]: Analyzing trace with hash -471732578, now seen corresponding path program 1 times [2021-11-07 08:07:27,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:27,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573897778] [2021-11-07 08:07:27,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:27,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:28,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:28,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:28,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573897778] [2021-11-07 08:07:28,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573897778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:28,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:28,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:07:28,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854207085] [2021-11-07 08:07:28,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:07:28,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:28,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:07:28,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:07:28,046 INFO L87 Difference]: Start difference. First operand 753 states and 1059 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:29,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:29,282 INFO L93 Difference]: Finished difference Result 1640 states and 2378 transitions. [2021-11-07 08:07:29,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 08:07:29,283 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 08:07:29,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:29,296 INFO L225 Difference]: With dead ends: 1640 [2021-11-07 08:07:29,296 INFO L226 Difference]: Without dead ends: 1623 [2021-11-07 08:07:29,297 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-07 08:07:29,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2021-11-07 08:07:29,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 753. [2021-11-07 08:07:29,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 742 states have (on average 1.4245283018867925) internal successors, (1057), 752 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:29,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1057 transitions. [2021-11-07 08:07:29,400 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1057 transitions. Word has length 63 [2021-11-07 08:07:29,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:29,401 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1057 transitions. [2021-11-07 08:07:29,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:29,405 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1057 transitions. [2021-11-07 08:07:29,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 08:07:29,406 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:29,407 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:29,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 08:07:29,407 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:07:29,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:29,411 INFO L85 PathProgramCache]: Analyzing trace with hash -157878139, now seen corresponding path program 1 times [2021-11-07 08:07:29,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:29,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854706936] [2021-11-07 08:07:29,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:29,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:29,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:29,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:29,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854706936] [2021-11-07 08:07:29,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854706936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:29,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:29,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:07:29,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186574459] [2021-11-07 08:07:29,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:07:29,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:29,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:07:29,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:07:29,665 INFO L87 Difference]: Start difference. First operand 753 states and 1057 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:30,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:30,847 INFO L93 Difference]: Finished difference Result 2163 states and 3143 transitions. [2021-11-07 08:07:30,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 08:07:30,848 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 08:07:30,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:30,864 INFO L225 Difference]: With dead ends: 2163 [2021-11-07 08:07:30,864 INFO L226 Difference]: Without dead ends: 2158 [2021-11-07 08:07:30,865 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-11-07 08:07:30,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2021-11-07 08:07:30,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 753. [2021-11-07 08:07:30,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 742 states have (on average 1.4218328840970351) internal successors, (1055), 752 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:30,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1055 transitions. [2021-11-07 08:07:30,984 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1055 transitions. Word has length 63 [2021-11-07 08:07:30,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:30,986 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1055 transitions. [2021-11-07 08:07:30,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:30,987 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1055 transitions. [2021-11-07 08:07:30,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 08:07:30,988 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:30,988 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:30,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 08:07:30,989 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:07:30,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:30,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2011079223, now seen corresponding path program 1 times [2021-11-07 08:07:30,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:30,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587026770] [2021-11-07 08:07:30,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:30,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:31,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:31,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:31,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587026770] [2021-11-07 08:07:31,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587026770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:31,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:31,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 08:07:31,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13476479] [2021-11-07 08:07:31,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:07:31,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:31,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:07:31,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:07:31,210 INFO L87 Difference]: Start difference. First operand 753 states and 1055 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:32,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:32,867 INFO L93 Difference]: Finished difference Result 2421 states and 3522 transitions. [2021-11-07 08:07:32,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 08:07:32,868 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 08:07:32,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:32,882 INFO L225 Difference]: With dead ends: 2421 [2021-11-07 08:07:32,883 INFO L226 Difference]: Without dead ends: 1964 [2021-11-07 08:07:32,885 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-11-07 08:07:32,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2021-11-07 08:07:33,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 753. [2021-11-07 08:07:33,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 742 states have (on average 1.4204851752021563) internal successors, (1054), 752 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:33,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1054 transitions. [2021-11-07 08:07:33,024 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1054 transitions. Word has length 63 [2021-11-07 08:07:33,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:33,024 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1054 transitions. [2021-11-07 08:07:33,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:33,025 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1054 transitions. [2021-11-07 08:07:33,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 08:07:33,031 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:33,031 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:33,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 08:07:33,032 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:07:33,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:33,033 INFO L85 PathProgramCache]: Analyzing trace with hash 556986468, now seen corresponding path program 1 times [2021-11-07 08:07:33,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:33,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19673343] [2021-11-07 08:07:33,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:33,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:33,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:33,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:33,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19673343] [2021-11-07 08:07:33,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19673343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:33,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:33,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 08:07:33,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583020028] [2021-11-07 08:07:33,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 08:07:33,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:33,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 08:07:33,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-07 08:07:33,348 INFO L87 Difference]: Start difference. First operand 753 states and 1054 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:36,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:36,311 INFO L93 Difference]: Finished difference Result 3543 states and 5198 transitions. [2021-11-07 08:07:36,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 08:07:36,311 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 08:07:36,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:36,335 INFO L225 Difference]: With dead ends: 3543 [2021-11-07 08:07:36,335 INFO L226 Difference]: Without dead ends: 3116 [2021-11-07 08:07:36,338 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=300, Invalid=822, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 08:07:36,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2021-11-07 08:07:36,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 753. [2021-11-07 08:07:36,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 742 states have (on average 1.4191374663072776) internal successors, (1053), 752 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:36,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1053 transitions. [2021-11-07 08:07:36,519 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1053 transitions. Word has length 63 [2021-11-07 08:07:36,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:36,520 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1053 transitions. [2021-11-07 08:07:36,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:36,521 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1053 transitions. [2021-11-07 08:07:36,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 08:07:36,522 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:36,523 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:36,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 08:07:36,523 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:07:36,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:36,524 INFO L85 PathProgramCache]: Analyzing trace with hash -33472501, now seen corresponding path program 1 times [2021-11-07 08:07:36,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:36,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821981848] [2021-11-07 08:07:36,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:36,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:36,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:36,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:36,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821981848] [2021-11-07 08:07:36,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821981848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:36,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:36,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:07:36,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594146278] [2021-11-07 08:07:36,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:07:36,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:36,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:07:36,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:07:36,721 INFO L87 Difference]: Start difference. First operand 753 states and 1053 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:37,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:37,911 INFO L93 Difference]: Finished difference Result 2576 states and 3773 transitions. [2021-11-07 08:07:37,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 08:07:37,912 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 08:07:37,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:37,924 INFO L225 Difference]: With dead ends: 2576 [2021-11-07 08:07:37,925 INFO L226 Difference]: Without dead ends: 2158 [2021-11-07 08:07:37,927 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-11-07 08:07:37,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2021-11-07 08:07:38,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 753. [2021-11-07 08:07:38,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 742 states have (on average 1.4164420485175202) internal successors, (1051), 752 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:38,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1051 transitions. [2021-11-07 08:07:38,120 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1051 transitions. Word has length 63 [2021-11-07 08:07:38,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:38,121 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1051 transitions. [2021-11-07 08:07:38,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:38,122 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1051 transitions. [2021-11-07 08:07:38,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 08:07:38,123 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:38,124 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:38,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 08:07:38,124 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:07:38,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:38,125 INFO L85 PathProgramCache]: Analyzing trace with hash -653212004, now seen corresponding path program 1 times [2021-11-07 08:07:38,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:38,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622593634] [2021-11-07 08:07:38,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:38,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:38,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:38,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:38,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622593634] [2021-11-07 08:07:38,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622593634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:38,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:38,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 08:07:38,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734571198] [2021-11-07 08:07:38,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:07:38,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:38,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:07:38,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:07:38,361 INFO L87 Difference]: Start difference. First operand 753 states and 1051 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:41,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:41,474 INFO L93 Difference]: Finished difference Result 4872 states and 7105 transitions. [2021-11-07 08:07:41,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 08:07:41,477 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 08:07:41,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:41,502 INFO L225 Difference]: With dead ends: 4872 [2021-11-07 08:07:41,502 INFO L226 Difference]: Without dead ends: 4867 [2021-11-07 08:07:41,505 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 08:07:41,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4867 states. [2021-11-07 08:07:41,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4867 to 757. [2021-11-07 08:07:41,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 746 states have (on average 1.4142091152815013) internal successors, (1055), 756 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:41,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1055 transitions. [2021-11-07 08:07:41,744 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1055 transitions. Word has length 63 [2021-11-07 08:07:41,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:41,745 INFO L470 AbstractCegarLoop]: Abstraction has 757 states and 1055 transitions. [2021-11-07 08:07:41,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:41,745 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1055 transitions. [2021-11-07 08:07:41,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 08:07:41,747 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:41,747 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:41,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 08:07:41,748 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:07:41,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:41,749 INFO L85 PathProgramCache]: Analyzing trace with hash 543767036, now seen corresponding path program 1 times [2021-11-07 08:07:41,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:41,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705644192] [2021-11-07 08:07:41,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:41,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:41,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:41,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:41,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705644192] [2021-11-07 08:07:41,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705644192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:41,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:41,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:07:41,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630307371] [2021-11-07 08:07:41,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:07:41,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:41,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:07:41,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:07:41,909 INFO L87 Difference]: Start difference. First operand 757 states and 1055 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:43,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:43,120 INFO L93 Difference]: Finished difference Result 2570 states and 3763 transitions. [2021-11-07 08:07:43,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 08:07:43,121 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 08:07:43,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:43,133 INFO L225 Difference]: With dead ends: 2570 [2021-11-07 08:07:43,134 INFO L226 Difference]: Without dead ends: 2158 [2021-11-07 08:07:43,136 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-11-07 08:07:43,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2021-11-07 08:07:43,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 757. [2021-11-07 08:07:43,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 746 states have (on average 1.4128686327077749) internal successors, (1054), 756 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:43,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1054 transitions. [2021-11-07 08:07:43,329 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1054 transitions. Word has length 63 [2021-11-07 08:07:43,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:43,330 INFO L470 AbstractCegarLoop]: Abstraction has 757 states and 1054 transitions. [2021-11-07 08:07:43,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:43,331 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1054 transitions. [2021-11-07 08:07:43,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 08:07:43,332 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:43,333 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:43,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 08:07:43,333 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:07:43,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:43,334 INFO L85 PathProgramCache]: Analyzing trace with hash 467877792, now seen corresponding path program 1 times [2021-11-07 08:07:43,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:43,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723061114] [2021-11-07 08:07:43,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:43,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:43,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:43,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723061114] [2021-11-07 08:07:43,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723061114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:43,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:43,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:07:43,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745240543] [2021-11-07 08:07:43,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:07:43,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:43,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:07:43,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:07:43,479 INFO L87 Difference]: Start difference. First operand 757 states and 1054 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:44,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:44,600 INFO L93 Difference]: Finished difference Result 1858 states and 2707 transitions. [2021-11-07 08:07:44,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 08:07:44,601 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 08:07:44,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:44,620 INFO L225 Difference]: With dead ends: 1858 [2021-11-07 08:07:44,627 INFO L226 Difference]: Without dead ends: 1401 [2021-11-07 08:07:44,629 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2021-11-07 08:07:44,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2021-11-07 08:07:44,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 757. [2021-11-07 08:07:44,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 746 states have (on average 1.4115281501340482) internal successors, (1053), 756 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:44,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1053 transitions. [2021-11-07 08:07:44,829 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1053 transitions. Word has length 64 [2021-11-07 08:07:44,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:44,830 INFO L470 AbstractCegarLoop]: Abstraction has 757 states and 1053 transitions. [2021-11-07 08:07:44,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:44,830 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1053 transitions. [2021-11-07 08:07:44,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 08:07:44,832 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:44,832 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:44,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 08:07:44,833 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:07:44,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:44,833 INFO L85 PathProgramCache]: Analyzing trace with hash -766225965, now seen corresponding path program 1 times [2021-11-07 08:07:44,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:44,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449401026] [2021-11-07 08:07:44,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:44,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:44,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:44,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:44,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449401026] [2021-11-07 08:07:44,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449401026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:44,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:44,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:07:44,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574108761] [2021-11-07 08:07:44,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:07:44,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:44,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:07:44,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:07:44,978 INFO L87 Difference]: Start difference. First operand 757 states and 1053 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:46,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:46,202 INFO L93 Difference]: Finished difference Result 2163 states and 3134 transitions. [2021-11-07 08:07:46,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 08:07:46,203 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 08:07:46,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:46,209 INFO L225 Difference]: With dead ends: 2163 [2021-11-07 08:07:46,209 INFO L226 Difference]: Without dead ends: 2158 [2021-11-07 08:07:46,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-11-07 08:07:46,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2021-11-07 08:07:46,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 753. [2021-11-07 08:07:46,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 742 states have (on average 1.412398921832884) internal successors, (1048), 752 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:46,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1048 transitions. [2021-11-07 08:07:46,449 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1048 transitions. Word has length 64 [2021-11-07 08:07:46,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:46,450 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1048 transitions. [2021-11-07 08:07:46,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:46,450 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1048 transitions. [2021-11-07 08:07:46,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 08:07:46,452 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:46,452 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:46,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 08:07:46,453 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:07:46,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:46,453 INFO L85 PathProgramCache]: Analyzing trace with hash -56004428, now seen corresponding path program 1 times [2021-11-07 08:07:46,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:46,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887840120] [2021-11-07 08:07:46,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:46,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:46,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:46,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:46,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887840120] [2021-11-07 08:07:46,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887840120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:46,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:46,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:07:46,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335886944] [2021-11-07 08:07:46,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:07:46,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:46,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:07:46,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:07:46,636 INFO L87 Difference]: Start difference. First operand 753 states and 1048 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:47,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:47,915 INFO L93 Difference]: Finished difference Result 2050 states and 2997 transitions. [2021-11-07 08:07:47,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 08:07:47,915 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 08:07:47,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:47,921 INFO L225 Difference]: With dead ends: 2050 [2021-11-07 08:07:47,921 INFO L226 Difference]: Without dead ends: 1623 [2021-11-07 08:07:47,923 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-07 08:07:47,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2021-11-07 08:07:48,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 753. [2021-11-07 08:07:48,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 742 states have (on average 1.4110512129380053) internal successors, (1047), 752 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:48,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1047 transitions. [2021-11-07 08:07:48,147 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1047 transitions. Word has length 64 [2021-11-07 08:07:48,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:48,148 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1047 transitions. [2021-11-07 08:07:48,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:48,148 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1047 transitions. [2021-11-07 08:07:48,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 08:07:48,150 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:48,150 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:48,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 08:07:48,151 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:07:48,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:48,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2022048839, now seen corresponding path program 1 times [2021-11-07 08:07:48,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:48,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884372143] [2021-11-07 08:07:48,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:48,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:49,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:49,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:49,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884372143] [2021-11-07 08:07:49,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884372143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:49,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:49,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-07 08:07:49,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2254295] [2021-11-07 08:07:49,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-07 08:07:49,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:49,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-07 08:07:49,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2021-11-07 08:07:49,481 INFO L87 Difference]: Start difference. First operand 753 states and 1047 transitions. Second operand has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 24 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:55,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:55,879 INFO L93 Difference]: Finished difference Result 2170 states and 3137 transitions. [2021-11-07 08:07:55,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 08:07:55,879 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 24 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 08:07:55,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:55,884 INFO L225 Difference]: With dead ends: 2170 [2021-11-07 08:07:55,884 INFO L226 Difference]: Without dead ends: 2166 [2021-11-07 08:07:55,886 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=386, Invalid=1966, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 08:07:55,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2021-11-07 08:07:56,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 759. [2021-11-07 08:07:56,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 748 states have (on average 1.410427807486631) internal successors, (1055), 758 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:56,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1055 transitions. [2021-11-07 08:07:56,083 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1055 transitions. Word has length 65 [2021-11-07 08:07:56,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:56,083 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 1055 transitions. [2021-11-07 08:07:56,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 24 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:56,084 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1055 transitions. [2021-11-07 08:07:56,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 08:07:56,085 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:56,086 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:56,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 08:07:56,086 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:07:56,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:56,087 INFO L85 PathProgramCache]: Analyzing trace with hash 71013216, now seen corresponding path program 1 times [2021-11-07 08:07:56,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:07:56,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755026130] [2021-11-07 08:07:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:56,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:07:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:57,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:57,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:07:57,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755026130] [2021-11-07 08:07:57,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755026130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:57,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:57,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-07 08:07:57,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501106341] [2021-11-07 08:07:57,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 08:07:57,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:07:57,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 08:07:57,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2021-11-07 08:07:57,183 INFO L87 Difference]: Start difference. First operand 759 states and 1055 transitions. Second operand has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:02,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:08:02,412 INFO L93 Difference]: Finished difference Result 3059 states and 4481 transitions. [2021-11-07 08:08:02,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 08:08:02,413 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 08:08:02,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:08:02,418 INFO L225 Difference]: With dead ends: 3059 [2021-11-07 08:08:02,418 INFO L226 Difference]: Without dead ends: 2642 [2021-11-07 08:08:02,421 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=303, Invalid=1589, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 08:08:02,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2021-11-07 08:08:02,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 758. [2021-11-07 08:08:02,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 747 states have (on average 1.4082998661311914) internal successors, (1052), 757 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:02,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1052 transitions. [2021-11-07 08:08:02,664 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1052 transitions. Word has length 65 [2021-11-07 08:08:02,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:08:02,665 INFO L470 AbstractCegarLoop]: Abstraction has 758 states and 1052 transitions. [2021-11-07 08:08:02,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:02,665 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1052 transitions. [2021-11-07 08:08:02,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 08:08:02,667 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:08:02,667 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:08:02,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 08:08:02,668 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:08:02,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:08:02,668 INFO L85 PathProgramCache]: Analyzing trace with hash -907607662, now seen corresponding path program 1 times [2021-11-07 08:08:02,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:08:02,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28389132] [2021-11-07 08:08:02,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:08:02,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:08:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:08:03,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:08:03,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:08:03,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28389132] [2021-11-07 08:08:03,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28389132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:08:03,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:08:03,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-07 08:08:03,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924763934] [2021-11-07 08:08:03,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 08:08:03,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:08:03,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 08:08:03,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-11-07 08:08:03,721 INFO L87 Difference]: Start difference. First operand 758 states and 1052 transitions. Second operand has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:08,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:08:08,569 INFO L93 Difference]: Finished difference Result 2577 states and 3760 transitions. [2021-11-07 08:08:08,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-07 08:08:08,570 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 08:08:08,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:08:08,574 INFO L225 Difference]: With dead ends: 2577 [2021-11-07 08:08:08,574 INFO L226 Difference]: Without dead ends: 2163 [2021-11-07 08:08:08,576 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=293, Invalid=1429, Unknown=0, NotChecked=0, Total=1722 [2021-11-07 08:08:08,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2021-11-07 08:08:08,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 756. [2021-11-07 08:08:08,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 745 states have (on average 1.4067114093959732) internal successors, (1048), 755 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:08,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1048 transitions. [2021-11-07 08:08:08,791 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1048 transitions. Word has length 65 [2021-11-07 08:08:08,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:08:08,792 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 1048 transitions. [2021-11-07 08:08:08,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:08,792 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1048 transitions. [2021-11-07 08:08:08,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 08:08:08,794 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:08:08,794 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:08:08,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 08:08:08,795 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:08:08,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:08:08,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1360022849, now seen corresponding path program 1 times [2021-11-07 08:08:08,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:08:08,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155590853] [2021-11-07 08:08:08,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:08:08,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:08:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:08:09,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:08:09,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:08:09,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155590853] [2021-11-07 08:08:09,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155590853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:08:09,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:08:09,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-07 08:08:09,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809027912] [2021-11-07 08:08:09,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 08:08:09,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:08:09,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 08:08:09,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-11-07 08:08:09,729 INFO L87 Difference]: Start difference. First operand 756 states and 1048 transitions. Second operand has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:14,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:08:14,430 INFO L93 Difference]: Finished difference Result 2573 states and 3759 transitions. [2021-11-07 08:08:14,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-07 08:08:14,431 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 08:08:14,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:08:14,434 INFO L225 Difference]: With dead ends: 2573 [2021-11-07 08:08:14,434 INFO L226 Difference]: Without dead ends: 2151 [2021-11-07 08:08:14,436 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=298, Invalid=1342, Unknown=0, NotChecked=0, Total=1640 [2021-11-07 08:08:14,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2021-11-07 08:08:14,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 762. [2021-11-07 08:08:14,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 751 states have (on average 1.4047936085219708) internal successors, (1055), 761 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:14,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1055 transitions. [2021-11-07 08:08:14,661 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1055 transitions. Word has length 65 [2021-11-07 08:08:14,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:08:14,662 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1055 transitions. [2021-11-07 08:08:14,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:14,662 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1055 transitions. [2021-11-07 08:08:14,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 08:08:14,664 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:08:14,664 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:08:14,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 08:08:14,665 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:08:14,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:08:14,665 INFO L85 PathProgramCache]: Analyzing trace with hash -138245905, now seen corresponding path program 1 times [2021-11-07 08:08:14,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:08:14,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606847686] [2021-11-07 08:08:14,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:08:14,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:08:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:08:15,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:08:15,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:08:15,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606847686] [2021-11-07 08:08:15,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606847686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:08:15,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:08:15,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-07 08:08:15,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466325649] [2021-11-07 08:08:15,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-07 08:08:15,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:08:15,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-07 08:08:15,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2021-11-07 08:08:15,623 INFO L87 Difference]: Start difference. First operand 762 states and 1055 transitions. Second operand has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 24 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:22,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:08:22,409 INFO L93 Difference]: Finished difference Result 4195 states and 6256 transitions. [2021-11-07 08:08:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 08:08:22,412 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 24 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 08:08:22,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:08:22,421 INFO L225 Difference]: With dead ends: 4195 [2021-11-07 08:08:22,422 INFO L226 Difference]: Without dead ends: 3778 [2021-11-07 08:08:22,424 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=375, Invalid=1881, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 08:08:22,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2021-11-07 08:08:22,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 757. [2021-11-07 08:08:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 746 states have (on average 1.403485254691689) internal successors, (1047), 756 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:22,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1047 transitions. [2021-11-07 08:08:22,791 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1047 transitions. Word has length 65 [2021-11-07 08:08:22,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:08:22,792 INFO L470 AbstractCegarLoop]: Abstraction has 757 states and 1047 transitions. [2021-11-07 08:08:22,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 24 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:22,792 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1047 transitions. [2021-11-07 08:08:22,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 08:08:22,794 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:08:22,794 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:08:22,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 08:08:22,796 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:08:22,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:08:22,797 INFO L85 PathProgramCache]: Analyzing trace with hash 914761815, now seen corresponding path program 1 times [2021-11-07 08:08:22,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:08:22,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204288517] [2021-11-07 08:08:22,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:08:22,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:08:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:08:23,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:08:23,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:08:23,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204288517] [2021-11-07 08:08:23,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204288517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:08:23,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:08:23,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-07 08:08:23,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953051055] [2021-11-07 08:08:23,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 08:08:23,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:08:23,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 08:08:23,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2021-11-07 08:08:23,624 INFO L87 Difference]: Start difference. First operand 757 states and 1047 transitions. Second operand has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:28,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:08:28,066 INFO L93 Difference]: Finished difference Result 2554 states and 3736 transitions. [2021-11-07 08:08:28,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-07 08:08:28,067 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 08:08:28,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:08:28,072 INFO L225 Difference]: With dead ends: 2554 [2021-11-07 08:08:28,073 INFO L226 Difference]: Without dead ends: 2137 [2021-11-07 08:08:28,075 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=333, Invalid=1307, Unknown=0, NotChecked=0, Total=1640 [2021-11-07 08:08:28,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2021-11-07 08:08:28,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 763. [2021-11-07 08:08:28,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 752 states have (on average 1.4002659574468086) internal successors, (1053), 762 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:28,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1053 transitions. [2021-11-07 08:08:28,474 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1053 transitions. Word has length 65 [2021-11-07 08:08:28,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:08:28,475 INFO L470 AbstractCegarLoop]: Abstraction has 763 states and 1053 transitions. [2021-11-07 08:08:28,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:28,475 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1053 transitions. [2021-11-07 08:08:28,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 08:08:28,477 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:08:28,477 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:08:28,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 08:08:28,478 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:08:28,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:08:28,478 INFO L85 PathProgramCache]: Analyzing trace with hash 909641217, now seen corresponding path program 1 times [2021-11-07 08:08:28,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:08:28,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230420331] [2021-11-07 08:08:28,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:08:28,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:08:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:08:29,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:08:29,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:08:29,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230420331] [2021-11-07 08:08:29,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230420331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:08:29,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:08:29,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-07 08:08:29,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81051653] [2021-11-07 08:08:29,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 08:08:29,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:08:29,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 08:08:29,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2021-11-07 08:08:29,751 INFO L87 Difference]: Start difference. First operand 763 states and 1053 transitions. Second operand has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:37,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:08:37,762 INFO L93 Difference]: Finished difference Result 4535 states and 6735 transitions. [2021-11-07 08:08:37,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-07 08:08:37,763 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 08:08:37,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:08:37,774 INFO L225 Difference]: With dead ends: 4535 [2021-11-07 08:08:37,774 INFO L226 Difference]: Without dead ends: 4122 [2021-11-07 08:08:37,777 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=430, Invalid=2020, Unknown=0, NotChecked=0, Total=2450 [2021-11-07 08:08:37,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2021-11-07 08:08:38,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 760. [2021-11-07 08:08:38,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 749 states have (on average 1.4005340453938584) internal successors, (1049), 759 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:38,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1049 transitions. [2021-11-07 08:08:38,147 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1049 transitions. Word has length 65 [2021-11-07 08:08:38,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:08:38,148 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1049 transitions. [2021-11-07 08:08:38,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:38,148 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1049 transitions. [2021-11-07 08:08:38,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 08:08:38,150 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:08:38,150 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:08:38,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 08:08:38,151 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:08:38,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:08:38,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1910519334, now seen corresponding path program 1 times [2021-11-07 08:08:38,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:08:38,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046597603] [2021-11-07 08:08:38,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:08:38,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:08:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:08:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:08:38,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:08:38,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046597603] [2021-11-07 08:08:38,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046597603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:08:38,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:08:38,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 08:08:38,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375813910] [2021-11-07 08:08:38,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:08:38,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:08:38,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:08:38,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:08:38,361 INFO L87 Difference]: Start difference. First operand 760 states and 1049 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:40,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:08:40,759 INFO L93 Difference]: Finished difference Result 2412 states and 3465 transitions. [2021-11-07 08:08:40,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 08:08:40,760 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 08:08:40,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:08:40,766 INFO L225 Difference]: With dead ends: 2412 [2021-11-07 08:08:40,766 INFO L226 Difference]: Without dead ends: 2405 [2021-11-07 08:08:40,767 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2021-11-07 08:08:40,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2405 states. [2021-11-07 08:08:41,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2405 to 764. [2021-11-07 08:08:41,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 753 states have (on average 1.3970783532536521) internal successors, (1052), 763 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:41,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1052 transitions. [2021-11-07 08:08:41,109 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1052 transitions. Word has length 66 [2021-11-07 08:08:41,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:08:41,109 INFO L470 AbstractCegarLoop]: Abstraction has 764 states and 1052 transitions. [2021-11-07 08:08:41,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:41,109 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1052 transitions. [2021-11-07 08:08:41,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 08:08:41,111 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:08:41,111 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:08:41,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 08:08:41,112 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:08:41,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:08:41,112 INFO L85 PathProgramCache]: Analyzing trace with hash -679485959, now seen corresponding path program 1 times [2021-11-07 08:08:41,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:08:41,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146091054] [2021-11-07 08:08:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:08:41,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:08:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:08:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:08:42,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:08:42,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146091054] [2021-11-07 08:08:42,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146091054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:08:42,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:08:42,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-07 08:08:42,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344052576] [2021-11-07 08:08:42,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 08:08:42,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:08:42,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 08:08:42,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-11-07 08:08:42,221 INFO L87 Difference]: Start difference. First operand 764 states and 1052 transitions. Second operand has 20 states, 20 states have (on average 3.3) internal successors, (66), 20 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:47,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:08:47,253 INFO L93 Difference]: Finished difference Result 1983 states and 2814 transitions. [2021-11-07 08:08:47,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-07 08:08:47,254 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.3) internal successors, (66), 20 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 08:08:47,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:08:47,258 INFO L225 Difference]: With dead ends: 1983 [2021-11-07 08:08:47,259 INFO L226 Difference]: Without dead ends: 1954 [2021-11-07 08:08:47,260 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1254, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 08:08:47,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2021-11-07 08:08:47,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 759. [2021-11-07 08:08:47,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 748 states have (on average 1.3970588235294117) internal successors, (1045), 758 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:47,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1045 transitions. [2021-11-07 08:08:47,683 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1045 transitions. Word has length 66 [2021-11-07 08:08:47,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:08:47,683 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 1045 transitions. [2021-11-07 08:08:47,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.3) internal successors, (66), 20 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:47,683 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1045 transitions. [2021-11-07 08:08:47,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 08:08:47,685 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:08:47,685 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:08:47,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-07 08:08:47,686 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:08:47,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:08:47,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1869823065, now seen corresponding path program 1 times [2021-11-07 08:08:47,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:08:47,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522571326] [2021-11-07 08:08:47,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:08:47,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:08:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:08:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:08:48,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:08:48,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522571326] [2021-11-07 08:08:48,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522571326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:08:48,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:08:48,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-07 08:08:48,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673740075] [2021-11-07 08:08:48,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 08:08:48,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:08:48,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 08:08:48,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:08:48,171 INFO L87 Difference]: Start difference. First operand 759 states and 1045 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:52,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:08:52,500 INFO L93 Difference]: Finished difference Result 4711 states and 6981 transitions. [2021-11-07 08:08:52,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 08:08:52,501 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 08:08:52,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:08:52,507 INFO L225 Difference]: With dead ends: 4711 [2021-11-07 08:08:52,507 INFO L226 Difference]: Without dead ends: 4269 [2021-11-07 08:08:52,508 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-07 08:08:52,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4269 states. [2021-11-07 08:08:52,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4269 to 727. [2021-11-07 08:08:52,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 718 states have (on average 1.3885793871866294) internal successors, (997), 726 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:52,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 997 transitions. [2021-11-07 08:08:52,873 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 997 transitions. Word has length 66 [2021-11-07 08:08:52,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:08:52,873 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 997 transitions. [2021-11-07 08:08:52,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:52,874 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 997 transitions. [2021-11-07 08:08:52,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 08:08:52,875 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:08:52,875 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:08:52,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-07 08:08:52,876 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:08:52,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:08:52,876 INFO L85 PathProgramCache]: Analyzing trace with hash 476193166, now seen corresponding path program 1 times [2021-11-07 08:08:52,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:08:52,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761418143] [2021-11-07 08:08:52,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:08:52,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:08:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:08:53,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:08:53,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:08:53,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761418143] [2021-11-07 08:08:53,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761418143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:08:53,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:08:53,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:08:53,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682155398] [2021-11-07 08:08:53,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:08:53,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:08:53,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:08:53,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:08:53,030 INFO L87 Difference]: Start difference. First operand 727 states and 997 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:54,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:08:54,804 INFO L93 Difference]: Finished difference Result 2079 states and 3012 transitions. [2021-11-07 08:08:54,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 08:08:54,804 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 08:08:54,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:08:54,806 INFO L225 Difference]: With dead ends: 2079 [2021-11-07 08:08:54,806 INFO L226 Difference]: Without dead ends: 1587 [2021-11-07 08:08:54,807 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-07 08:08:54,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2021-11-07 08:08:55,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 727. [2021-11-07 08:08:55,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 718 states have (on average 1.383008356545961) internal successors, (993), 726 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:55,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 993 transitions. [2021-11-07 08:08:55,188 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 993 transitions. Word has length 66 [2021-11-07 08:08:55,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:08:55,189 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 993 transitions. [2021-11-07 08:08:55,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:55,189 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 993 transitions. [2021-11-07 08:08:55,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 08:08:55,190 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:08:55,190 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:08:55,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-07 08:08:55,190 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:08:55,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:08:55,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1020060386, now seen corresponding path program 1 times [2021-11-07 08:08:55,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:08:55,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763509114] [2021-11-07 08:08:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:08:55,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:08:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:08:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:08:56,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:08:56,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763509114] [2021-11-07 08:08:56,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763509114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:08:56,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:08:56,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-07 08:08:56,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481370195] [2021-11-07 08:08:56,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 08:08:56,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:08:56,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 08:08:56,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-11-07 08:08:56,348 INFO L87 Difference]: Start difference. First operand 727 states and 993 transitions. Second operand has 20 states, 20 states have (on average 3.3) internal successors, (66), 20 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:59,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:08:59,123 INFO L93 Difference]: Finished difference Result 2083 states and 3022 transitions. [2021-11-07 08:08:59,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 08:08:59,124 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.3) internal successors, (66), 20 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 08:08:59,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:08:59,127 INFO L225 Difference]: With dead ends: 2083 [2021-11-07 08:08:59,127 INFO L226 Difference]: Without dead ends: 1644 [2021-11-07 08:08:59,129 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=210, Invalid=980, Unknown=0, NotChecked=0, Total=1190 [2021-11-07 08:08:59,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2021-11-07 08:08:59,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 712. [2021-11-07 08:08:59,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 704 states have (on average 1.3849431818181819) internal successors, (975), 711 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:59,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 975 transitions. [2021-11-07 08:08:59,462 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 975 transitions. Word has length 66 [2021-11-07 08:08:59,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:08:59,462 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 975 transitions. [2021-11-07 08:08:59,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.3) internal successors, (66), 20 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:08:59,462 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 975 transitions. [2021-11-07 08:08:59,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 08:08:59,463 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:08:59,464 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:08:59,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-07 08:08:59,464 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:08:59,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:08:59,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1845993125, now seen corresponding path program 1 times [2021-11-07 08:08:59,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:08:59,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405537891] [2021-11-07 08:08:59,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:08:59,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:08:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:08:59,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:08:59,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:08:59,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405537891] [2021-11-07 08:08:59,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405537891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:08:59,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:08:59,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 08:08:59,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635238983] [2021-11-07 08:08:59,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:08:59,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:08:59,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:08:59,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:08:59,660 INFO L87 Difference]: Start difference. First operand 712 states and 975 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:04,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:09:04,778 INFO L93 Difference]: Finished difference Result 4810 states and 6999 transitions. [2021-11-07 08:09:04,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 08:09:04,778 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 08:09:04,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:09:04,783 INFO L225 Difference]: With dead ends: 4810 [2021-11-07 08:09:04,783 INFO L226 Difference]: Without dead ends: 4803 [2021-11-07 08:09:04,785 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 08:09:04,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4803 states. [2021-11-07 08:09:05,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4803 to 716. [2021-11-07 08:09:05,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 708 states have (on average 1.38135593220339) internal successors, (978), 715 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:05,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 978 transitions. [2021-11-07 08:09:05,168 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 978 transitions. Word has length 66 [2021-11-07 08:09:05,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:09:05,168 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 978 transitions. [2021-11-07 08:09:05,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:05,168 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 978 transitions. [2021-11-07 08:09:05,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 08:09:05,170 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:09:05,170 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:09:05,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-07 08:09:05,170 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:09:05,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:09:05,171 INFO L85 PathProgramCache]: Analyzing trace with hash 486961824, now seen corresponding path program 1 times [2021-11-07 08:09:05,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:09:05,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660644043] [2021-11-07 08:09:05,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:09:05,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:09:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:09:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:05,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:09:05,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660644043] [2021-11-07 08:09:05,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660644043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:09:05,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:09:05,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 08:09:05,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239748698] [2021-11-07 08:09:05,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:09:05,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:09:05,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:09:05,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:09:05,497 INFO L87 Difference]: Start difference. First operand 716 states and 978 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:07,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:09:07,168 INFO L93 Difference]: Finished difference Result 1982 states and 2896 transitions. [2021-11-07 08:09:07,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 08:09:07,169 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 08:09:07,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:09:07,171 INFO L225 Difference]: With dead ends: 1982 [2021-11-07 08:09:07,171 INFO L226 Difference]: Without dead ends: 1467 [2021-11-07 08:09:07,172 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-07 08:09:07,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2021-11-07 08:09:07,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 611. [2021-11-07 08:09:07,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 607 states have (on average 1.4036243822075782) internal successors, (852), 610 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:07,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 852 transitions. [2021-11-07 08:09:07,492 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 852 transitions. Word has length 66 [2021-11-07 08:09:07,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:09:07,492 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 852 transitions. [2021-11-07 08:09:07,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:07,493 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 852 transitions. [2021-11-07 08:09:07,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 08:09:07,494 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:09:07,494 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:09:07,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-07 08:09:07,494 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:09:07,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:09:07,495 INFO L85 PathProgramCache]: Analyzing trace with hash -863380496, now seen corresponding path program 1 times [2021-11-07 08:09:07,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:09:07,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162816402] [2021-11-07 08:09:07,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:09:07,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:09:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:09:08,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:08,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:09:08,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162816402] [2021-11-07 08:09:08,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162816402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:09:08,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:09:08,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-07 08:09:08,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439686669] [2021-11-07 08:09:08,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 08:09:08,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:09:08,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 08:09:08,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2021-11-07 08:09:08,498 INFO L87 Difference]: Start difference. First operand 611 states and 852 transitions. Second operand has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:13,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:09:13,284 INFO L93 Difference]: Finished difference Result 1928 states and 2833 transitions. [2021-11-07 08:09:13,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-07 08:09:13,285 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 08:09:13,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:09:13,287 INFO L225 Difference]: With dead ends: 1928 [2021-11-07 08:09:13,287 INFO L226 Difference]: Without dead ends: 1924 [2021-11-07 08:09:13,289 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=309, Invalid=1853, Unknown=0, NotChecked=0, Total=2162 [2021-11-07 08:09:13,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2021-11-07 08:09:13,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 605. [2021-11-07 08:09:13,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 602 states have (on average 1.4036544850498338) internal successors, (845), 604 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:13,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 845 transitions. [2021-11-07 08:09:13,654 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 845 transitions. Word has length 67 [2021-11-07 08:09:13,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:09:13,655 INFO L470 AbstractCegarLoop]: Abstraction has 605 states and 845 transitions. [2021-11-07 08:09:13,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:13,655 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 845 transitions. [2021-11-07 08:09:13,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 08:09:13,656 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:09:13,657 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:09:13,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-07 08:09:13,657 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:09:13,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:09:13,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1482550367, now seen corresponding path program 1 times [2021-11-07 08:09:13,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:09:13,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731144446] [2021-11-07 08:09:13,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:09:13,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:09:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:09:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:14,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:09:14,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731144446] [2021-11-07 08:09:14,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731144446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:09:14,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:09:14,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-07 08:09:14,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088203838] [2021-11-07 08:09:14,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 08:09:14,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:09:14,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 08:09:14,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-11-07 08:09:14,643 INFO L87 Difference]: Start difference. First operand 605 states and 845 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 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) [2021-11-07 08:09:19,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:09:19,274 INFO L93 Difference]: Finished difference Result 1867 states and 2761 transitions. [2021-11-07 08:09:19,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-07 08:09:19,274 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-07 08:09:19,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:09:19,277 INFO L225 Difference]: With dead ends: 1867 [2021-11-07 08:09:19,277 INFO L226 Difference]: Without dead ends: 1859 [2021-11-07 08:09:19,278 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=360, Invalid=1710, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 08:09:19,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1859 states. [2021-11-07 08:09:19,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1859 to 606. [2021-11-07 08:09:19,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 603 states have (on average 1.4029850746268657) internal successors, (846), 605 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:19,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 846 transitions. [2021-11-07 08:09:19,633 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 846 transitions. Word has length 68 [2021-11-07 08:09:19,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:09:19,634 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 846 transitions. [2021-11-07 08:09:19,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 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) [2021-11-07 08:09:19,635 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 846 transitions. [2021-11-07 08:09:19,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 08:09:19,636 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:09:19,636 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:09:19,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-07 08:09:19,636 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:09:19,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:09:19,637 INFO L85 PathProgramCache]: Analyzing trace with hash 989039241, now seen corresponding path program 1 times [2021-11-07 08:09:19,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:09:19,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464178606] [2021-11-07 08:09:19,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:09:19,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:09:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:09:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:20,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:09:20,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464178606] [2021-11-07 08:09:20,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464178606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:09:20,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:09:20,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 08:09:20,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130425554] [2021-11-07 08:09:20,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 08:09:20,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:09:20,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 08:09:20,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2021-11-07 08:09:20,337 INFO L87 Difference]: Start difference. First operand 606 states and 846 transitions. Second operand has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 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) [2021-11-07 08:09:25,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:09:25,833 INFO L93 Difference]: Finished difference Result 3926 states and 5918 transitions. [2021-11-07 08:09:25,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-07 08:09:25,834 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-07 08:09:25,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:09:25,837 INFO L225 Difference]: With dead ends: 3926 [2021-11-07 08:09:25,837 INFO L226 Difference]: Without dead ends: 3503 [2021-11-07 08:09:25,839 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=273, Invalid=1367, Unknown=0, NotChecked=0, Total=1640 [2021-11-07 08:09:25,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3503 states. [2021-11-07 08:09:26,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3503 to 612. [2021-11-07 08:09:26,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 609 states have (on average 1.4006568144499179) internal successors, (853), 611 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:26,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 853 transitions. [2021-11-07 08:09:26,209 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 853 transitions. Word has length 68 [2021-11-07 08:09:26,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:09:26,209 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 853 transitions. [2021-11-07 08:09:26,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 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) [2021-11-07 08:09:26,210 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 853 transitions. [2021-11-07 08:09:26,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 08:09:26,210 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:09:26,210 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:09:26,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-07 08:09:26,211 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:09:26,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:09:26,211 INFO L85 PathProgramCache]: Analyzing trace with hash -825467697, now seen corresponding path program 1 times [2021-11-07 08:09:26,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:09:26,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166010886] [2021-11-07 08:09:26,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:09:26,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:09:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:09:26,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:26,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:09:26,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166010886] [2021-11-07 08:09:26,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166010886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:09:26,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:09:26,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:09:26,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763878303] [2021-11-07 08:09:26,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:09:26,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:09:26,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:09:26,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:09:26,337 INFO L87 Difference]: Start difference. First operand 612 states and 853 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 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) [2021-11-07 08:09:27,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:09:27,538 INFO L93 Difference]: Finished difference Result 1127 states and 1593 transitions. [2021-11-07 08:09:27,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 08:09:27,539 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-07 08:09:27,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:09:27,541 INFO L225 Difference]: With dead ends: 1127 [2021-11-07 08:09:27,541 INFO L226 Difference]: Without dead ends: 1120 [2021-11-07 08:09:27,542 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-07 08:09:27,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2021-11-07 08:09:27,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 612. [2021-11-07 08:09:27,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 609 states have (on average 1.3990147783251232) internal successors, (852), 611 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:27,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 852 transitions. [2021-11-07 08:09:27,934 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 852 transitions. Word has length 68 [2021-11-07 08:09:27,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:09:27,934 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 852 transitions. [2021-11-07 08:09:27,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 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) [2021-11-07 08:09:27,935 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 852 transitions. [2021-11-07 08:09:27,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 08:09:27,935 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:09:27,935 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:09:27,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-07 08:09:27,936 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:09:27,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:09:27,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1955464482, now seen corresponding path program 1 times [2021-11-07 08:09:27,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:09:27,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590049298] [2021-11-07 08:09:27,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:09:27,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:09:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:09:28,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:28,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:09:28,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590049298] [2021-11-07 08:09:28,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590049298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:09:28,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:09:28,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-07 08:09:28,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677664823] [2021-11-07 08:09:28,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 08:09:28,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:09:28,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 08:09:28,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-07 08:09:28,776 INFO L87 Difference]: Start difference. First operand 612 states and 852 transitions. Second operand has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:31,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:09:31,116 INFO L93 Difference]: Finished difference Result 1037 states and 1494 transitions. [2021-11-07 08:09:31,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 08:09:31,116 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 08:09:31,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:09:31,117 INFO L225 Difference]: With dead ends: 1037 [2021-11-07 08:09:31,118 INFO L226 Difference]: Without dead ends: 1020 [2021-11-07 08:09:31,118 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=228, Invalid=962, Unknown=0, NotChecked=0, Total=1190 [2021-11-07 08:09:31,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2021-11-07 08:09:31,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 604. [2021-11-07 08:09:31,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 601 states have (on average 1.4026622296173046) internal successors, (843), 603 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 843 transitions. [2021-11-07 08:09:31,503 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 843 transitions. Word has length 69 [2021-11-07 08:09:31,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:09:31,503 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 843 transitions. [2021-11-07 08:09:31,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:31,503 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 843 transitions. [2021-11-07 08:09:31,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 08:09:31,504 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:09:31,504 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:09:31,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-07 08:09:31,504 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:09:31,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:09:31,505 INFO L85 PathProgramCache]: Analyzing trace with hash 882869858, now seen corresponding path program 1 times [2021-11-07 08:09:31,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:09:31,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256186610] [2021-11-07 08:09:31,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:09:31,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:09:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:09:32,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:32,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:09:32,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256186610] [2021-11-07 08:09:32,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256186610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:09:32,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:09:32,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-07 08:09:32,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922971505] [2021-11-07 08:09:32,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 08:09:32,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:09:32,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 08:09:32,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-11-07 08:09:32,327 INFO L87 Difference]: Start difference. First operand 604 states and 843 transitions. Second operand has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:37,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:09:37,947 INFO L93 Difference]: Finished difference Result 4582 states and 6877 transitions. [2021-11-07 08:09:37,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 08:09:37,947 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 08:09:37,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:09:37,953 INFO L225 Difference]: With dead ends: 4582 [2021-11-07 08:09:37,953 INFO L226 Difference]: Without dead ends: 4576 [2021-11-07 08:09:37,954 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=200, Invalid=730, Unknown=0, NotChecked=0, Total=930 [2021-11-07 08:09:37,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2021-11-07 08:09:38,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 610. [2021-11-07 08:09:38,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 607 states have (on average 1.4019769357495881) internal successors, (851), 609 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:38,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 851 transitions. [2021-11-07 08:09:38,379 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 851 transitions. Word has length 69 [2021-11-07 08:09:38,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:09:38,379 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 851 transitions. [2021-11-07 08:09:38,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:38,379 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 851 transitions. [2021-11-07 08:09:38,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 08:09:38,380 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:09:38,380 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:09:38,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-07 08:09:38,380 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:09:38,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:09:38,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1637741865, now seen corresponding path program 1 times [2021-11-07 08:09:38,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:09:38,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164181828] [2021-11-07 08:09:38,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:09:38,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:09:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:09:38,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:38,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:09:38,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164181828] [2021-11-07 08:09:38,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164181828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:09:38,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:09:38,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 08:09:38,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839709704] [2021-11-07 08:09:38,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 08:09:38,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:09:38,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 08:09:38,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-07 08:09:38,901 INFO L87 Difference]: Start difference. First operand 610 states and 851 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:43,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:09:43,351 INFO L93 Difference]: Finished difference Result 3392 states and 5058 transitions. [2021-11-07 08:09:43,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 08:09:43,351 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 08:09:43,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:09:43,355 INFO L225 Difference]: With dead ends: 3392 [2021-11-07 08:09:43,355 INFO L226 Difference]: Without dead ends: 3386 [2021-11-07 08:09:43,358 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2021-11-07 08:09:43,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2021-11-07 08:09:43,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 603. [2021-11-07 08:09:43,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 600 states have (on average 1.4) internal successors, (840), 602 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:43,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 840 transitions. [2021-11-07 08:09:43,818 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 840 transitions. Word has length 69 [2021-11-07 08:09:43,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:09:43,818 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 840 transitions. [2021-11-07 08:09:43,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:43,819 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 840 transitions. [2021-11-07 08:09:43,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 08:09:43,819 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:09:43,819 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:09:43,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-07 08:09:43,820 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:09:43,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:09:43,820 INFO L85 PathProgramCache]: Analyzing trace with hash 360048320, now seen corresponding path program 1 times [2021-11-07 08:09:43,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:09:43,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26507197] [2021-11-07 08:09:43,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:09:43,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:09:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:09:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:44,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:09:44,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26507197] [2021-11-07 08:09:44,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26507197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:09:44,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:09:44,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 08:09:44,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459239359] [2021-11-07 08:09:44,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 08:09:44,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:09:44,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 08:09:44,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-07 08:09:44,159 INFO L87 Difference]: Start difference. First operand 603 states and 840 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:46,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:09:46,488 INFO L93 Difference]: Finished difference Result 1949 states and 2851 transitions. [2021-11-07 08:09:46,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 08:09:46,489 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 08:09:46,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:09:46,491 INFO L225 Difference]: With dead ends: 1949 [2021-11-07 08:09:46,491 INFO L226 Difference]: Without dead ends: 1943 [2021-11-07 08:09:46,492 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-07 08:09:46,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2021-11-07 08:09:46,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 597. [2021-11-07 08:09:46,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 595 states have (on average 1.4) internal successors, (833), 596 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:46,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 833 transitions. [2021-11-07 08:09:46,976 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 833 transitions. Word has length 69 [2021-11-07 08:09:46,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:09:46,976 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 833 transitions. [2021-11-07 08:09:46,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:46,976 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 833 transitions. [2021-11-07 08:09:46,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 08:09:46,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:09:46,977 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:09:46,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-07 08:09:46,977 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:09:46,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:09:46,978 INFO L85 PathProgramCache]: Analyzing trace with hash 2048865290, now seen corresponding path program 1 times [2021-11-07 08:09:46,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:09:46,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742517567] [2021-11-07 08:09:46,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:09:46,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:09:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:09:47,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:47,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:09:47,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742517567] [2021-11-07 08:09:47,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742517567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:09:47,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:09:47,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-07 08:09:47,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079777391] [2021-11-07 08:09:47,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 08:09:47,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:09:47,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 08:09:47,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-11-07 08:09:47,694 INFO L87 Difference]: Start difference. First operand 597 states and 833 transitions. Second operand has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 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) [2021-11-07 08:09:50,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:09:50,090 INFO L93 Difference]: Finished difference Result 1015 states and 1469 transitions. [2021-11-07 08:09:50,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 08:09:50,091 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 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 70 [2021-11-07 08:09:50,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:09:50,092 INFO L225 Difference]: With dead ends: 1015 [2021-11-07 08:09:50,092 INFO L226 Difference]: Without dead ends: 1007 [2021-11-07 08:09:50,093 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=208, Invalid=914, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 08:09:50,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2021-11-07 08:09:50,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 597. [2021-11-07 08:09:50,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 595 states have (on average 1.3983193277310924) internal successors, (832), 596 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:50,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 832 transitions. [2021-11-07 08:09:50,516 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 832 transitions. Word has length 70 [2021-11-07 08:09:50,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:09:50,517 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 832 transitions. [2021-11-07 08:09:50,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 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) [2021-11-07 08:09:50,517 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 832 transitions. [2021-11-07 08:09:50,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 08:09:50,518 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:09:50,518 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:09:50,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-07 08:09:50,518 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:09:50,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:09:50,519 INFO L85 PathProgramCache]: Analyzing trace with hash 144238485, now seen corresponding path program 1 times [2021-11-07 08:09:50,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:09:50,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903400475] [2021-11-07 08:09:50,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:09:50,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:09:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:09:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:51,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:09:51,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903400475] [2021-11-07 08:09:51,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903400475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:09:51,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:09:51,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-07 08:09:51,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293709475] [2021-11-07 08:09:51,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 08:09:51,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:09:51,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 08:09:51,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2021-11-07 08:09:51,466 INFO L87 Difference]: Start difference. First operand 597 states and 832 transitions. Second operand has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:56,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:09:56,361 INFO L93 Difference]: Finished difference Result 1874 states and 2772 transitions. [2021-11-07 08:09:56,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 08:09:56,362 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-07 08:09:56,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:09:56,364 INFO L225 Difference]: With dead ends: 1874 [2021-11-07 08:09:56,364 INFO L226 Difference]: Without dead ends: 1856 [2021-11-07 08:09:56,366 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=318, Invalid=1752, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 08:09:56,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2021-11-07 08:09:56,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 579. [2021-11-07 08:09:56,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 578 states have (on average 1.4083044982698962) internal successors, (814), 578 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:56,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 814 transitions. [2021-11-07 08:09:56,886 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 814 transitions. Word has length 71 [2021-11-07 08:09:56,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:09:56,886 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 814 transitions. [2021-11-07 08:09:56,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:56,886 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 814 transitions. [2021-11-07 08:09:56,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 08:09:56,887 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:09:56,888 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:09:56,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-07 08:09:56,888 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:09:56,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:09:56,888 INFO L85 PathProgramCache]: Analyzing trace with hash 262304865, now seen corresponding path program 1 times [2021-11-07 08:09:56,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:09:56,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590630349] [2021-11-07 08:09:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:09:56,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:09:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:09:56,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:56,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:09:56,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590630349] [2021-11-07 08:09:56,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590630349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:09:56,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:09:56,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:09:56,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037371472] [2021-11-07 08:09:56,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:09:56,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:09:56,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:09:56,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:09:56,947 INFO L87 Difference]: Start difference. First operand 579 states and 814 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:58,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:09:58,050 INFO L93 Difference]: Finished difference Result 1367 states and 2008 transitions. [2021-11-07 08:09:58,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:09:58,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-07 08:09:58,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:09:58,051 INFO L225 Difference]: With dead ends: 1367 [2021-11-07 08:09:58,051 INFO L226 Difference]: Without dead ends: 957 [2021-11-07 08:09:58,052 INFO L786 BasicCegarLoop]: 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 [2021-11-07 08:09:58,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2021-11-07 08:09:58,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 955. [2021-11-07 08:09:58,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 954 states have (on average 1.4360587002096437) internal successors, (1370), 954 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:58,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1370 transitions. [2021-11-07 08:09:58,927 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1370 transitions. Word has length 91 [2021-11-07 08:09:58,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:09:58,928 INFO L470 AbstractCegarLoop]: Abstraction has 955 states and 1370 transitions. [2021-11-07 08:09:58,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:58,928 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1370 transitions. [2021-11-07 08:09:58,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 08:09:58,930 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:09:58,930 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:09:58,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-07 08:09:58,931 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:09:58,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:09:58,932 INFO L85 PathProgramCache]: Analyzing trace with hash -403802728, now seen corresponding path program 1 times [2021-11-07 08:09:58,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:09:58,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103821909] [2021-11-07 08:09:58,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:09:58,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:09:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:09:58,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:09:58,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:09:58,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103821909] [2021-11-07 08:09:58,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103821909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:09:58,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:09:58,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:09:58,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989562352] [2021-11-07 08:09:58,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:09:58,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:09:58,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:09:58,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:09:58,994 INFO L87 Difference]: Start difference. First operand 955 states and 1370 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:10:03,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:10:03,401 INFO L93 Difference]: Finished difference Result 4723 states and 6990 transitions. [2021-11-07 08:10:03,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 08:10:03,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-07 08:10:03,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:10:03,405 INFO L225 Difference]: With dead ends: 4723 [2021-11-07 08:10:03,406 INFO L226 Difference]: Without dead ends: 3937 [2021-11-07 08:10:03,407 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:10:03,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3937 states. [2021-11-07 08:10:05,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3937 to 1819. [2021-11-07 08:10:05,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1818 states have (on average 1.448844884488449) internal successors, (2634), 1818 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:10:05,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 2634 transitions. [2021-11-07 08:10:05,192 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 2634 transitions. Word has length 93 [2021-11-07 08:10:05,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:10:05,193 INFO L470 AbstractCegarLoop]: Abstraction has 1819 states and 2634 transitions. [2021-11-07 08:10:05,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:10:05,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 2634 transitions. [2021-11-07 08:10:05,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 08:10:05,197 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:10:05,197 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:10:05,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-07 08:10:05,198 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:10:05,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:10:05,198 INFO L85 PathProgramCache]: Analyzing trace with hash 638646745, now seen corresponding path program 1 times [2021-11-07 08:10:05,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:10:05,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933346451] [2021-11-07 08:10:05,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:10:05,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:10:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:10:05,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:10:05,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:10:05,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933346451] [2021-11-07 08:10:05,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933346451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:10:05,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:10:05,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:10:05,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805077354] [2021-11-07 08:10:05,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:10:05,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:10:05,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:10:05,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:10:05,262 INFO L87 Difference]: Start difference. First operand 1819 states and 2634 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:10:08,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:10:08,226 INFO L93 Difference]: Finished difference Result 4327 states and 6364 transitions. [2021-11-07 08:10:08,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:10:08,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-07 08:10:08,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:10:08,229 INFO L225 Difference]: With dead ends: 4327 [2021-11-07 08:10:08,229 INFO L226 Difference]: Without dead ends: 2677 [2021-11-07 08:10:08,231 INFO L786 BasicCegarLoop]: 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 [2021-11-07 08:10:08,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2021-11-07 08:10:10,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 2675. [2021-11-07 08:10:10,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2675 states, 2674 states have (on average 1.4517576664173524) internal successors, (3882), 2674 states have internal predecessors, (3882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:10:10,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2675 states to 2675 states and 3882 transitions. [2021-11-07 08:10:10,744 INFO L78 Accepts]: Start accepts. Automaton has 2675 states and 3882 transitions. Word has length 93 [2021-11-07 08:10:10,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:10:10,744 INFO L470 AbstractCegarLoop]: Abstraction has 2675 states and 3882 transitions. [2021-11-07 08:10:10,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:10:10,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2675 states and 3882 transitions. [2021-11-07 08:10:10,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 08:10:10,748 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:10:10,749 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:10:10,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-07 08:10:10,749 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:10:10,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:10:10,750 INFO L85 PathProgramCache]: Analyzing trace with hash 572153233, now seen corresponding path program 1 times [2021-11-07 08:10:10,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:10:10,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589527385] [2021-11-07 08:10:10,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:10:10,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:10:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:10:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:10:10,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:10:10,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589527385] [2021-11-07 08:10:10,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589527385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:10:10,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:10:10,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:10:10,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520545068] [2021-11-07 08:10:10,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:10:10,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:10:10,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:10:10,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:10:10,803 INFO L87 Difference]: Start difference. First operand 2675 states and 3882 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:10:15,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:10:15,067 INFO L93 Difference]: Finished difference Result 6459 states and 9412 transitions. [2021-11-07 08:10:15,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:10:15,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-07 08:10:15,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:10:15,072 INFO L225 Difference]: With dead ends: 6459 [2021-11-07 08:10:15,072 INFO L226 Difference]: Without dead ends: 3953 [2021-11-07 08:10:15,075 INFO L786 BasicCegarLoop]: 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 [2021-11-07 08:10:15,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3953 states. [2021-11-07 08:10:19,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3953 to 3903. [2021-11-07 08:10:19,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3903 states, 3902 states have (on average 1.433623782675551) internal successors, (5594), 3902 states have internal predecessors, (5594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:10:19,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3903 states to 3903 states and 5594 transitions. [2021-11-07 08:10:19,251 INFO L78 Accepts]: Start accepts. Automaton has 3903 states and 5594 transitions. Word has length 93 [2021-11-07 08:10:19,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:10:19,252 INFO L470 AbstractCegarLoop]: Abstraction has 3903 states and 5594 transitions. [2021-11-07 08:10:19,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:10:19,253 INFO L276 IsEmpty]: Start isEmpty. Operand 3903 states and 5594 transitions. [2021-11-07 08:10:19,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 08:10:19,257 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:10:19,257 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:10:19,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-07 08:10:19,258 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:10:19,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:10:19,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1651929496, now seen corresponding path program 1 times [2021-11-07 08:10:19,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:10:19,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930716055] [2021-11-07 08:10:19,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:10:19,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:10:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:10:19,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:10:19,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:10:19,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930716055] [2021-11-07 08:10:19,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930716055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:10:19,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:10:19,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:10:19,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070651410] [2021-11-07 08:10:19,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:10:19,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:10:19,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:10:19,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:10:19,328 INFO L87 Difference]: Start difference. First operand 3903 states and 5594 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:10:35,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:10:35,904 INFO L93 Difference]: Finished difference Result 18695 states and 26798 transitions. [2021-11-07 08:10:35,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 08:10:35,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-07 08:10:35,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:10:35,926 INFO L225 Difference]: With dead ends: 18695 [2021-11-07 08:10:35,926 INFO L226 Difference]: Without dead ends: 14961 [2021-11-07 08:10:35,932 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:10:35,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14961 states. [2021-11-07 08:10:43,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14961 to 7923. [2021-11-07 08:10:43,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7923 states, 7922 states have (on average 1.4251451653622822) internal successors, (11290), 7922 states have internal predecessors, (11290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:10:43,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7923 states to 7923 states and 11290 transitions. [2021-11-07 08:10:43,941 INFO L78 Accepts]: Start accepts. Automaton has 7923 states and 11290 transitions. Word has length 93 [2021-11-07 08:10:43,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:10:43,942 INFO L470 AbstractCegarLoop]: Abstraction has 7923 states and 11290 transitions. [2021-11-07 08:10:43,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:10:43,942 INFO L276 IsEmpty]: Start isEmpty. Operand 7923 states and 11290 transitions. [2021-11-07 08:10:43,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 08:10:43,946 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:10:43,946 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:10:43,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-07 08:10:43,947 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:10:43,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:10:43,947 INFO L85 PathProgramCache]: Analyzing trace with hash -767888488, now seen corresponding path program 1 times [2021-11-07 08:10:43,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:10:43,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140146331] [2021-11-07 08:10:43,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:10:43,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:10:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:10:44,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:10:44,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:10:44,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140146331] [2021-11-07 08:10:44,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140146331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:10:44,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:10:44,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:10:44,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037549484] [2021-11-07 08:10:44,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:10:44,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:10:44,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:10:44,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:10:44,006 INFO L87 Difference]: Start difference. First operand 7923 states and 11290 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:11:10,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:11:10,680 INFO L93 Difference]: Finished difference Result 33923 states and 48206 transitions. [2021-11-07 08:11:10,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 08:11:10,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-07 08:11:10,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:11:10,720 INFO L225 Difference]: With dead ends: 33923 [2021-11-07 08:11:10,720 INFO L226 Difference]: Without dead ends: 26169 [2021-11-07 08:11:10,731 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:11:10,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26169 states. [2021-11-07 08:11:27,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26169 to 16395. [2021-11-07 08:11:27,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16395 states, 16394 states have (on average 1.4186897645480054) internal successors, (23258), 16394 states have internal predecessors, (23258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:11:27,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16395 states to 16395 states and 23258 transitions. [2021-11-07 08:11:27,104 INFO L78 Accepts]: Start accepts. Automaton has 16395 states and 23258 transitions. Word has length 93 [2021-11-07 08:11:27,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:11:27,104 INFO L470 AbstractCegarLoop]: Abstraction has 16395 states and 23258 transitions. [2021-11-07 08:11:27,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:11:27,105 INFO L276 IsEmpty]: Start isEmpty. Operand 16395 states and 23258 transitions. [2021-11-07 08:11:27,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 08:11:27,111 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:11:27,111 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:11:27,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-07 08:11:27,112 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:11:27,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:11:27,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2122104904, now seen corresponding path program 1 times [2021-11-07 08:11:27,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:11:27,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668186722] [2021-11-07 08:11:27,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:11:27,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:11:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:11:27,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:11:27,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:11:27,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668186722] [2021-11-07 08:11:27,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668186722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:11:27,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:11:27,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:11:27,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957423719] [2021-11-07 08:11:27,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:11:27,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:11:27,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:11:27,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:11:27,166 INFO L87 Difference]: Start difference. First operand 16395 states and 23258 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:11:43,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:11:43,021 INFO L93 Difference]: Finished difference Result 31487 states and 44620 transitions. [2021-11-07 08:11:43,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:11:43,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-07 08:11:43,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:11:43,045 INFO L225 Difference]: With dead ends: 31487 [2021-11-07 08:11:43,045 INFO L226 Difference]: Without dead ends: 15261 [2021-11-07 08:11:43,061 INFO L786 BasicCegarLoop]: 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 [2021-11-07 08:11:43,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15261 states. [2021-11-07 08:11:56,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15261 to 12443. [2021-11-07 08:11:56,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12443 states, 12442 states have (on average 1.3928628837807426) internal successors, (17330), 12442 states have internal predecessors, (17330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:11:56,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12443 states to 12443 states and 17330 transitions. [2021-11-07 08:11:56,690 INFO L78 Accepts]: Start accepts. Automaton has 12443 states and 17330 transitions. Word has length 94 [2021-11-07 08:11:56,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:11:56,691 INFO L470 AbstractCegarLoop]: Abstraction has 12443 states and 17330 transitions. [2021-11-07 08:11:56,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:11:56,691 INFO L276 IsEmpty]: Start isEmpty. Operand 12443 states and 17330 transitions. [2021-11-07 08:11:56,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 08:11:56,695 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:11:56,695 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:11:56,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-07 08:11:56,696 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:11:56,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:11:56,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1022881993, now seen corresponding path program 1 times [2021-11-07 08:11:56,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:11:56,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697256989] [2021-11-07 08:11:56,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:11:56,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:11:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:11:56,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:11:56,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:11:56,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697256989] [2021-11-07 08:11:56,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697256989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:11:56,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:11:56,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:11:56,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84181477] [2021-11-07 08:11:56,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:11:56,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:11:56,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:11:56,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:11:56,749 INFO L87 Difference]: Start difference. First operand 12443 states and 17330 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:12:09,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:12:09,347 INFO L93 Difference]: Finished difference Result 23807 states and 33084 transitions. [2021-11-07 08:12:09,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:12:09,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-07 08:12:09,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:12:09,362 INFO L225 Difference]: With dead ends: 23807 [2021-11-07 08:12:09,362 INFO L226 Difference]: Without dead ends: 11533 [2021-11-07 08:12:09,373 INFO L786 BasicCegarLoop]: 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 [2021-11-07 08:12:09,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11533 states. [2021-11-07 08:12:21,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11533 to 11171. [2021-11-07 08:12:21,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11171 states, 11170 states have (on average 1.3742166517457475) internal successors, (15350), 11170 states have internal predecessors, (15350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:12:21,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11171 states to 11171 states and 15350 transitions. [2021-11-07 08:12:21,088 INFO L78 Accepts]: Start accepts. Automaton has 11171 states and 15350 transitions. Word has length 95 [2021-11-07 08:12:21,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:12:21,088 INFO L470 AbstractCegarLoop]: Abstraction has 11171 states and 15350 transitions. [2021-11-07 08:12:21,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:12:21,089 INFO L276 IsEmpty]: Start isEmpty. Operand 11171 states and 15350 transitions. [2021-11-07 08:12:21,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 08:12:21,091 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:12:21,092 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:12:21,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-07 08:12:21,092 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:12:21,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:12:21,092 INFO L85 PathProgramCache]: Analyzing trace with hash -369091068, now seen corresponding path program 1 times [2021-11-07 08:12:21,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:12:21,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427807655] [2021-11-07 08:12:21,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:12:21,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:12:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:12:21,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:12:21,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:12:21,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427807655] [2021-11-07 08:12:21,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427807655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:12:21,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:12:21,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:12:21,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7683815] [2021-11-07 08:12:21,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:12:21,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:12:21,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:12:21,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:12:21,149 INFO L87 Difference]: Start difference. First operand 11171 states and 15350 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:12:43,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:12:43,626 INFO L93 Difference]: Finished difference Result 32095 states and 43880 transitions. [2021-11-07 08:12:43,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:12:43,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-07 08:12:43,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:12:43,655 INFO L225 Difference]: With dead ends: 32095 [2021-11-07 08:12:43,655 INFO L226 Difference]: Without dead ends: 21093 [2021-11-07 08:12:43,665 INFO L786 BasicCegarLoop]: 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 [2021-11-07 08:12:43,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21093 states. [2021-11-07 08:13:04,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21093 to 19651. [2021-11-07 08:13:04,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19651 states, 19650 states have (on average 1.3574554707379134) internal successors, (26674), 19650 states have internal predecessors, (26674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:13:04,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19651 states to 19651 states and 26674 transitions. [2021-11-07 08:13:04,845 INFO L78 Accepts]: Start accepts. Automaton has 19651 states and 26674 transitions. Word has length 96 [2021-11-07 08:13:04,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:13:04,846 INFO L470 AbstractCegarLoop]: Abstraction has 19651 states and 26674 transitions. [2021-11-07 08:13:04,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:13:04,846 INFO L276 IsEmpty]: Start isEmpty. Operand 19651 states and 26674 transitions. [2021-11-07 08:13:04,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 08:13:04,848 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:13:04,848 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:13:04,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-07 08:13:04,848 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:13:04,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:13:04,849 INFO L85 PathProgramCache]: Analyzing trace with hash -553088427, now seen corresponding path program 1 times [2021-11-07 08:13:04,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:13:04,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758756390] [2021-11-07 08:13:04,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:13:04,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:13:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:13:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:13:04,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:13:04,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758756390] [2021-11-07 08:13:04,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758756390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:13:04,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:13:04,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:13:04,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479694352] [2021-11-07 08:13:04,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:13:04,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:13:04,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:13:04,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:13:04,933 INFO L87 Difference]: Start difference. First operand 19651 states and 26674 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:13:43,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:13:43,347 INFO L93 Difference]: Finished difference Result 33453 states and 44915 transitions. [2021-11-07 08:13:43,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 08:13:43,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-07 08:13:43,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:13:43,399 INFO L225 Difference]: With dead ends: 33453 [2021-11-07 08:13:43,399 INFO L226 Difference]: Without dead ends: 33451 [2021-11-07 08:13:43,406 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:13:43,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33451 states. [2021-11-07 08:14:05,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33451 to 20227. [2021-11-07 08:14:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20227 states, 20226 states have (on average 1.342529417581331) internal successors, (27154), 20226 states have internal predecessors, (27154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:06,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20227 states to 20227 states and 27154 transitions. [2021-11-07 08:14:06,020 INFO L78 Accepts]: Start accepts. Automaton has 20227 states and 27154 transitions. Word has length 97 [2021-11-07 08:14:06,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:14:06,020 INFO L470 AbstractCegarLoop]: Abstraction has 20227 states and 27154 transitions. [2021-11-07 08:14:06,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:06,020 INFO L276 IsEmpty]: Start isEmpty. Operand 20227 states and 27154 transitions. [2021-11-07 08:14:06,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 08:14:06,022 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:14:06,023 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:14:06,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-07 08:14:06,023 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:14:06,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:14:06,023 INFO L85 PathProgramCache]: Analyzing trace with hash -404836723, now seen corresponding path program 1 times [2021-11-07 08:14:06,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:14:06,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413762391] [2021-11-07 08:14:06,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:14:06,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:14:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:14:06,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:14:06,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:14:06,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413762391] [2021-11-07 08:14:06,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413762391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:14:06,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:14:06,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:14:06,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909147865] [2021-11-07 08:14:06,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:14:06,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:14:06,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:14:06,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:14:06,083 INFO L87 Difference]: Start difference. First operand 20227 states and 27154 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:38,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:14:38,861 INFO L93 Difference]: Finished difference Result 47091 states and 63010 transitions. [2021-11-07 08:14:38,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 08:14:38,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-07 08:14:38,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:14:38,904 INFO L225 Difference]: With dead ends: 47091 [2021-11-07 08:14:38,904 INFO L226 Difference]: Without dead ends: 27033 [2021-11-07 08:14:38,921 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:14:38,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27033 states. [2021-11-07 08:15:01,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27033 to 19819. [2021-11-07 08:15:01,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19819 states, 19818 states have (on average 1.3217277222726813) internal successors, (26194), 19818 states have internal predecessors, (26194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19819 states to 19819 states and 26194 transitions. [2021-11-07 08:15:01,654 INFO L78 Accepts]: Start accepts. Automaton has 19819 states and 26194 transitions. Word has length 97 [2021-11-07 08:15:01,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:01,655 INFO L470 AbstractCegarLoop]: Abstraction has 19819 states and 26194 transitions. [2021-11-07 08:15:01,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:01,655 INFO L276 IsEmpty]: Start isEmpty. Operand 19819 states and 26194 transitions. [2021-11-07 08:15:01,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 08:15:01,656 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:01,657 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:01,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-07 08:15:01,657 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:15:01,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:01,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1477016020, now seen corresponding path program 1 times [2021-11-07 08:15:01,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:01,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654026610] [2021-11-07 08:15:01,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:01,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:01,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:01,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:01,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654026610] [2021-11-07 08:15:01,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654026610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:01,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:01,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:15:01,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232750625] [2021-11-07 08:15:01,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:15:01,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:01,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:15:01,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:01,711 INFO L87 Difference]: Start difference. First operand 19819 states and 26194 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:28,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:28,105 INFO L93 Difference]: Finished difference Result 42447 states and 56156 transitions. [2021-11-07 08:15:28,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:15:28,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-07 08:15:28,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:28,136 INFO L225 Difference]: With dead ends: 42447 [2021-11-07 08:15:28,137 INFO L226 Difference]: Without dead ends: 22797 [2021-11-07 08:15:28,149 INFO L786 BasicCegarLoop]: 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 [2021-11-07 08:15:28,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22797 states. [2021-11-07 08:15:53,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22797 to 22235. [2021-11-07 08:15:53,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22235 states, 22234 states have (on average 1.312674282630206) internal successors, (29186), 22234 states have internal predecessors, (29186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:53,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22235 states to 22235 states and 29186 transitions. [2021-11-07 08:15:53,923 INFO L78 Accepts]: Start accepts. Automaton has 22235 states and 29186 transitions. Word has length 98 [2021-11-07 08:15:53,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:53,923 INFO L470 AbstractCegarLoop]: Abstraction has 22235 states and 29186 transitions. [2021-11-07 08:15:53,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:53,923 INFO L276 IsEmpty]: Start isEmpty. Operand 22235 states and 29186 transitions. [2021-11-07 08:15:53,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 08:15:53,930 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:53,931 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:53,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-07 08:15:53,931 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 08:15:53,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:53,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1508876484, now seen corresponding path program 1 times [2021-11-07 08:15:53,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:53,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534985916] [2021-11-07 08:15:53,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:53,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:54,034 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 08:15:54,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:54,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534985916] [2021-11-07 08:15:54,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534985916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:54,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:54,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:15:54,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482314771] [2021-11-07 08:15:54,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:15:54,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:54,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:15:54,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:15:54,037 INFO L87 Difference]: Start difference. First operand 22235 states and 29186 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:17:27,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:17:27,099 INFO L93 Difference]: Finished difference Result 113317 states and 148583 transitions. [2021-11-07 08:17:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:17:27,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-07 08:17:27,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:17:27,263 INFO L225 Difference]: With dead ends: 113317 [2021-11-07 08:17:27,263 INFO L226 Difference]: Without dead ends: 91251 [2021-11-07 08:17:27,298 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:17:27,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91251 states.