./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f91499-01d2-4396-8050-8ebf603ef4ba/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f91499-01d2-4396-8050-8ebf603ef4ba/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f91499-01d2-4396-8050-8ebf603ef4ba/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f91499-01d2-4396-8050-8ebf603ef4ba/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f91499-01d2-4396-8050-8ebf603ef4ba/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f91499-01d2-4396-8050-8ebf603ef4ba/bin/uautomizer-IVEQpCNsaX --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 92f84e18d7f713cb4a67277cb892c6222831b93652f8c37aad43582713426f96 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:41:01,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:41:01,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:41:01,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:41:01,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:41:01,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:41:01,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:41:01,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:41:01,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:41:01,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:41:01,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:41:01,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:41:01,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:41:01,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:41:01,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:41:01,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:41:01,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:41:01,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:41:01,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:41:01,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:41:01,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:41:01,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:41:01,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:41:01,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:41:01,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:41:01,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:41:01,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:41:01,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:41:01,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:41:01,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:41:01,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:41:01,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:41:01,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:41:01,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:41:01,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:41:01,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:41:01,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:41:01,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:41:01,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:41:01,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:41:01,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:41:01,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f91499-01d2-4396-8050-8ebf603ef4ba/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:41:01,731 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:41:01,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:41:01,732 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:41:01,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:41:01,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:41:01,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:41:01,742 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:41:01,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:41:01,743 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:41:01,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:41:01,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:41:01,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:41:01,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:41:01,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:41:01,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:41:01,746 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:41:01,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:41:01,747 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:41:01,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:41:01,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:41:01,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:41:01,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:41:01,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:41:01,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:41:01,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:41:01,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:41:01,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:41:01,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:41:01,757 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:41:01,760 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:41:01,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:41:01,761 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:41:01,761 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_22f91499-01d2-4396-8050-8ebf603ef4ba/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f91499-01d2-4396-8050-8ebf603ef4ba/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92f84e18d7f713cb4a67277cb892c6222831b93652f8c37aad43582713426f96 [2021-11-09 09:41:02,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:41:02,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:41:02,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:41:02,129 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:41:02,130 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:41:02,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f91499-01d2-4396-8050-8ebf603ef4ba/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-11-09 09:41:02,222 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f91499-01d2-4396-8050-8ebf603ef4ba/bin/uautomizer-IVEQpCNsaX/data/2f58ba3e9/6b9bfe124cc74007bae512530f6edd0b/FLAGf246d5b33 [2021-11-09 09:41:02,939 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:41:02,940 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f91499-01d2-4396-8050-8ebf603ef4ba/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-11-09 09:41:02,960 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f91499-01d2-4396-8050-8ebf603ef4ba/bin/uautomizer-IVEQpCNsaX/data/2f58ba3e9/6b9bfe124cc74007bae512530f6edd0b/FLAGf246d5b33 [2021-11-09 09:41:03,183 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f91499-01d2-4396-8050-8ebf603ef4ba/bin/uautomizer-IVEQpCNsaX/data/2f58ba3e9/6b9bfe124cc74007bae512530f6edd0b [2021-11-09 09:41:03,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:41:03,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:41:03,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:41:03,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:41:03,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:41:03,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:41:03" (1/1) ... [2021-11-09 09:41:03,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d5cefa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:41:03, skipping insertion in model container [2021-11-09 09:41:03,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:41:03" (1/1) ... [2021-11-09 09:41:03,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:41:03,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:41:03,712 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_22f91499-01d2-4396-8050-8ebf603ef4ba/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[7545,7558] [2021-11-09 09:41:03,738 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_22f91499-01d2-4396-8050-8ebf603ef4ba/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[10452,10465] [2021-11-09 09:41:03,760 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_22f91499-01d2-4396-8050-8ebf603ef4ba/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[11543,11556] [2021-11-09 09:41:03,783 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_22f91499-01d2-4396-8050-8ebf603ef4ba/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[12149,12162] [2021-11-09 09:41:03,800 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_22f91499-01d2-4396-8050-8ebf603ef4ba/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13568,13581] [2021-11-09 09:41:03,813 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_22f91499-01d2-4396-8050-8ebf603ef4ba/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14174,14187] [2021-11-09 09:41:03,822 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_22f91499-01d2-4396-8050-8ebf603ef4ba/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15145,15158] [2021-11-09 09:41:03,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:41:03,888 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:41:04,002 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_22f91499-01d2-4396-8050-8ebf603ef4ba/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[7545,7558] [2021-11-09 09:41:04,023 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_22f91499-01d2-4396-8050-8ebf603ef4ba/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[10452,10465] [2021-11-09 09:41:04,029 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_22f91499-01d2-4396-8050-8ebf603ef4ba/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[11543,11556] [2021-11-09 09:41:04,034 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_22f91499-01d2-4396-8050-8ebf603ef4ba/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[12149,12162] [2021-11-09 09:41:04,042 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_22f91499-01d2-4396-8050-8ebf603ef4ba/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13568,13581] [2021-11-09 09:41:04,047 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_22f91499-01d2-4396-8050-8ebf603ef4ba/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14174,14187] [2021-11-09 09:41:04,053 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_22f91499-01d2-4396-8050-8ebf603ef4ba/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15145,15158] [2021-11-09 09:41:04,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:41:04,128 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:41:04,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:41:04 WrapperNode [2021-11-09 09:41:04,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:41:04,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:41:04,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:41:04,130 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:41:04,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:41:04" (1/1) ... [2021-11-09 09:41:04,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:41:04" (1/1) ... [2021-11-09 09:41:04,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:41:04,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:41:04,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:41:04,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:41:04,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:41:04" (1/1) ... [2021-11-09 09:41:04,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:41:04" (1/1) ... [2021-11-09 09:41:04,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:41:04" (1/1) ... [2021-11-09 09:41:04,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:41:04" (1/1) ... [2021-11-09 09:41:04,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:41:04" (1/1) ... [2021-11-09 09:41:04,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:41:04" (1/1) ... [2021-11-09 09:41:04,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:41:04" (1/1) ... [2021-11-09 09:41:04,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:41:04,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:41:04,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:41:04,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:41:04,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:41:04" (1/1) ... [2021-11-09 09:41:04,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:41:04,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f91499-01d2-4396-8050-8ebf603ef4ba/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:41:04,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f91499-01d2-4396-8050-8ebf603ef4ba/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:41:04,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f91499-01d2-4396-8050-8ebf603ef4ba/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:41:04,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:41:04,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:41:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:41:04,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:41:05,836 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:41:05,836 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-09 09:41:05,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:41:05 BoogieIcfgContainer [2021-11-09 09:41:05,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:41:05,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:41:05,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:41:05,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:41:05,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:41:03" (1/3) ... [2021-11-09 09:41:05,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ff6e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:41:05, skipping insertion in model container [2021-11-09 09:41:05,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:41:04" (2/3) ... [2021-11-09 09:41:05,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ff6e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:41:05, skipping insertion in model container [2021-11-09 09:41:05,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:41:05" (3/3) ... [2021-11-09 09:41:05,849 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-11-09 09:41:05,856 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:41:05,857 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-09 09:41:05,915 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:41:05,924 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 [2021-11-09 09:41:05,924 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-09 09:41:05,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 207 states, 199 states have (on average 1.8241206030150754) internal successors, (363), 206 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:05,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-09 09:41:05,979 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:05,979 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] [2021-11-09 09:41:05,980 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:05,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:05,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1485336045, now seen corresponding path program 1 times [2021-11-09 09:41:05,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:05,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555233870] [2021-11-09 09:41:05,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:05,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:06,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:06,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555233870] [2021-11-09 09:41:06,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555233870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:06,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:06,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:41:06,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419012017] [2021-11-09 09:41:06,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:41:06,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:06,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:41:06,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:41:06,524 INFO L87 Difference]: Start difference. First operand has 207 states, 199 states have (on average 1.8241206030150754) internal successors, (363), 206 states have internal predecessors, (363), 0 states have call successors, (0), 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 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:06,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:06,905 INFO L93 Difference]: Finished difference Result 339 states and 570 transitions. [2021-11-09 09:41:06,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:41:06,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-11-09 09:41:06,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:06,926 INFO L225 Difference]: With dead ends: 339 [2021-11-09 09:41:06,927 INFO L226 Difference]: Without dead ends: 184 [2021-11-09 09:41:06,932 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 [2021-11-09 09:41:06,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-09 09:41:06,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-11-09 09:41:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 177 states have (on average 1.271186440677966) internal successors, (225), 183 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:06,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 225 transitions. [2021-11-09 09:41:06,991 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 225 transitions. Word has length 47 [2021-11-09 09:41:06,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:06,992 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 225 transitions. [2021-11-09 09:41:06,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:06,993 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 225 transitions. [2021-11-09 09:41:06,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-09 09:41:06,996 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:06,996 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] [2021-11-09 09:41:06,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:41:06,997 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:06,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:06,998 INFO L85 PathProgramCache]: Analyzing trace with hash 2047218142, now seen corresponding path program 1 times [2021-11-09 09:41:06,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:06,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663071509] [2021-11-09 09:41:06,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:07,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:07,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:07,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663071509] [2021-11-09 09:41:07,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663071509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:07,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:07,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:41:07,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054695108] [2021-11-09 09:41:07,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:41:07,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:07,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:41:07,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:41:07,132 INFO L87 Difference]: Start difference. First operand 184 states and 225 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:07,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:07,375 INFO L93 Difference]: Finished difference Result 391 states and 498 transitions. [2021-11-09 09:41:07,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:41:07,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-11-09 09:41:07,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:07,380 INFO L225 Difference]: With dead ends: 391 [2021-11-09 09:41:07,380 INFO L226 Difference]: Without dead ends: 249 [2021-11-09 09:41:07,382 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 [2021-11-09 09:41:07,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-11-09 09:41:07,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 225. [2021-11-09 09:41:07,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 218 states have (on average 1.3394495412844036) internal successors, (292), 224 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:07,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 292 transitions. [2021-11-09 09:41:07,442 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 292 transitions. Word has length 48 [2021-11-09 09:41:07,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:07,443 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 292 transitions. [2021-11-09 09:41:07,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:07,443 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 292 transitions. [2021-11-09 09:41:07,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-09 09:41:07,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:07,446 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] [2021-11-09 09:41:07,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:41:07,447 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:07,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:07,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1089931239, now seen corresponding path program 1 times [2021-11-09 09:41:07,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:07,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500452346] [2021-11-09 09:41:07,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:07,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:07,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:07,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:07,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500452346] [2021-11-09 09:41:07,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500452346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:07,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:07,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:41:07,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819513439] [2021-11-09 09:41:07,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:41:07,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:07,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:41:07,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:41:07,642 INFO L87 Difference]: Start difference. First operand 225 states and 292 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:07,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:07,926 INFO L93 Difference]: Finished difference Result 540 states and 722 transitions. [2021-11-09 09:41:07,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:41:07,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-11-09 09:41:07,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:07,932 INFO L225 Difference]: With dead ends: 540 [2021-11-09 09:41:07,933 INFO L226 Difference]: Without dead ends: 349 [2021-11-09 09:41:07,938 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 [2021-11-09 09:41:07,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-11-09 09:41:08,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 331. [2021-11-09 09:41:08,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 324 states have (on average 1.382716049382716) internal successors, (448), 330 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:08,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 448 transitions. [2021-11-09 09:41:08,006 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 448 transitions. Word has length 49 [2021-11-09 09:41:08,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:08,008 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 448 transitions. [2021-11-09 09:41:08,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:08,008 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 448 transitions. [2021-11-09 09:41:08,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-09 09:41:08,011 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:08,011 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] [2021-11-09 09:41:08,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 09:41:08,012 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:08,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:08,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1243075504, now seen corresponding path program 1 times [2021-11-09 09:41:08,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:08,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826554208] [2021-11-09 09:41:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:08,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:08,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:08,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:08,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826554208] [2021-11-09 09:41:08,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826554208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:08,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:08,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:41:08,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796049565] [2021-11-09 09:41:08,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:41:08,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:08,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:41:08,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:41:08,313 INFO L87 Difference]: Start difference. First operand 331 states and 448 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:09,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:09,239 INFO L93 Difference]: Finished difference Result 692 states and 974 transitions. [2021-11-09 09:41:09,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:41:09,240 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-09 09:41:09,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:09,248 INFO L225 Difference]: With dead ends: 692 [2021-11-09 09:41:09,249 INFO L226 Difference]: Without dead ends: 687 [2021-11-09 09:41:09,250 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 [2021-11-09 09:41:09,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2021-11-09 09:41:09,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 331. [2021-11-09 09:41:09,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 324 states have (on average 1.3796296296296295) internal successors, (447), 330 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:09,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 447 transitions. [2021-11-09 09:41:09,325 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 447 transitions. Word has length 50 [2021-11-09 09:41:09,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:09,326 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 447 transitions. [2021-11-09 09:41:09,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:09,327 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 447 transitions. [2021-11-09 09:41:09,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-09 09:41:09,334 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:09,334 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] [2021-11-09 09:41:09,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 09:41:09,335 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:09,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:09,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1139694690, now seen corresponding path program 1 times [2021-11-09 09:41:09,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:09,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823345649] [2021-11-09 09:41:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:09,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:09,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:09,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:09,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823345649] [2021-11-09 09:41:09,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823345649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:09,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:09,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:41:09,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84263480] [2021-11-09 09:41:09,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:41:09,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:09,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:41:09,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:41:09,605 INFO L87 Difference]: Start difference. First operand 331 states and 447 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:10,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:10,406 INFO L93 Difference]: Finished difference Result 911 states and 1290 transitions. [2021-11-09 09:41:10,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:41:10,407 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-09 09:41:10,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:10,414 INFO L225 Difference]: With dead ends: 911 [2021-11-09 09:41:10,414 INFO L226 Difference]: Without dead ends: 730 [2021-11-09 09:41:10,416 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 [2021-11-09 09:41:10,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2021-11-09 09:41:10,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 331. [2021-11-09 09:41:10,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 324 states have (on average 1.376543209876543) internal successors, (446), 330 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:10,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 446 transitions. [2021-11-09 09:41:10,474 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 446 transitions. Word has length 50 [2021-11-09 09:41:10,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:10,476 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 446 transitions. [2021-11-09 09:41:10,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:10,476 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 446 transitions. [2021-11-09 09:41:10,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-09 09:41:10,478 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:10,478 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] [2021-11-09 09:41:10,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 09:41:10,479 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:10,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:10,480 INFO L85 PathProgramCache]: Analyzing trace with hash 134088220, now seen corresponding path program 1 times [2021-11-09 09:41:10,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:10,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203315819] [2021-11-09 09:41:10,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:10,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:10,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:10,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:10,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203315819] [2021-11-09 09:41:10,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203315819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:10,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:10,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:41:10,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725924708] [2021-11-09 09:41:10,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:41:10,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:10,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:41:10,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:41:10,691 INFO L87 Difference]: Start difference. First operand 331 states and 446 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:11,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:11,109 INFO L93 Difference]: Finished difference Result 762 states and 1053 transitions. [2021-11-09 09:41:11,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:41:11,110 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-09 09:41:11,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:11,115 INFO L225 Difference]: With dead ends: 762 [2021-11-09 09:41:11,115 INFO L226 Difference]: Without dead ends: 545 [2021-11-09 09:41:11,116 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-11-09 09:41:11,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-11-09 09:41:11,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 331. [2021-11-09 09:41:11,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 324 states have (on average 1.373456790123457) internal successors, (445), 330 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:11,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 445 transitions. [2021-11-09 09:41:11,169 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 445 transitions. Word has length 50 [2021-11-09 09:41:11,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:11,170 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 445 transitions. [2021-11-09 09:41:11,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:11,170 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 445 transitions. [2021-11-09 09:41:11,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-09 09:41:11,171 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:11,172 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] [2021-11-09 09:41:11,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 09:41:11,172 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:11,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:11,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1263855603, now seen corresponding path program 1 times [2021-11-09 09:41:11,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:11,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461705155] [2021-11-09 09:41:11,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:11,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:12,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:12,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:12,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461705155] [2021-11-09 09:41:12,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461705155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:12,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:12,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-09 09:41:12,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022690607] [2021-11-09 09:41:12,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-09 09:41:12,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:12,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-09 09:41:12,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-11-09 09:41:12,031 INFO L87 Difference]: Start difference. First operand 331 states and 445 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:15,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:15,108 INFO L93 Difference]: Finished difference Result 947 states and 1328 transitions. [2021-11-09 09:41:15,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 09:41:15,109 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-11-09 09:41:15,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:15,115 INFO L225 Difference]: With dead ends: 947 [2021-11-09 09:41:15,115 INFO L226 Difference]: Without dead ends: 779 [2021-11-09 09:41:15,117 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=258, Invalid=1002, Unknown=0, NotChecked=0, Total=1260 [2021-11-09 09:41:15,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2021-11-09 09:41:15,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 329. [2021-11-09 09:41:15,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 322 states have (on average 1.3695652173913044) internal successors, (441), 328 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:15,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 441 transitions. [2021-11-09 09:41:15,174 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 441 transitions. Word has length 52 [2021-11-09 09:41:15,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:15,175 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 441 transitions. [2021-11-09 09:41:15,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:15,176 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 441 transitions. [2021-11-09 09:41:15,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-09 09:41:15,179 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:15,179 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] [2021-11-09 09:41:15,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 09:41:15,180 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:15,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:15,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1250594545, now seen corresponding path program 1 times [2021-11-09 09:41:15,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:15,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609442148] [2021-11-09 09:41:15,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:15,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:15,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:15,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609442148] [2021-11-09 09:41:15,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609442148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:15,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:15,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-09 09:41:15,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599515185] [2021-11-09 09:41:15,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-09 09:41:15,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:15,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-09 09:41:15,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-11-09 09:41:15,953 INFO L87 Difference]: Start difference. First operand 329 states and 441 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:18,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:18,398 INFO L93 Difference]: Finished difference Result 1021 states and 1464 transitions. [2021-11-09 09:41:18,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 09:41:18,399 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-11-09 09:41:18,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:18,407 INFO L225 Difference]: With dead ends: 1021 [2021-11-09 09:41:18,408 INFO L226 Difference]: Without dead ends: 1015 [2021-11-09 09:41:18,409 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=273, Invalid=1133, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 09:41:18,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2021-11-09 09:41:18,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 329. [2021-11-09 09:41:18,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 322 states have (on average 1.3664596273291925) internal successors, (440), 328 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:18,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 440 transitions. [2021-11-09 09:41:18,471 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 440 transitions. Word has length 52 [2021-11-09 09:41:18,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:18,473 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 440 transitions. [2021-11-09 09:41:18,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:18,473 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 440 transitions. [2021-11-09 09:41:18,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-09 09:41:18,474 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:18,494 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] [2021-11-09 09:41:18,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 09:41:18,495 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:18,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:18,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1783814727, now seen corresponding path program 1 times [2021-11-09 09:41:18,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:18,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094810897] [2021-11-09 09:41:18,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:18,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:19,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:19,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094810897] [2021-11-09 09:41:19,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094810897] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:19,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:19,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-09 09:41:19,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125932588] [2021-11-09 09:41:19,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-09 09:41:19,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:19,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-09 09:41:19,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-09 09:41:19,467 INFO L87 Difference]: Start difference. First operand 329 states and 440 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:21,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:21,991 INFO L93 Difference]: Finished difference Result 1128 states and 1616 transitions. [2021-11-09 09:41:21,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 09:41:21,991 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-11-09 09:41:21,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:21,999 INFO L225 Difference]: With dead ends: 1128 [2021-11-09 09:41:21,999 INFO L226 Difference]: Without dead ends: 953 [2021-11-09 09:41:22,001 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=236, Invalid=756, Unknown=0, NotChecked=0, Total=992 [2021-11-09 09:41:22,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2021-11-09 09:41:22,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 318. [2021-11-09 09:41:22,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 312 states have (on average 1.3717948717948718) internal successors, (428), 317 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:22,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 428 transitions. [2021-11-09 09:41:22,070 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 428 transitions. Word has length 52 [2021-11-09 09:41:22,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:22,071 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 428 transitions. [2021-11-09 09:41:22,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:22,071 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 428 transitions. [2021-11-09 09:41:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-09 09:41:22,072 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:22,072 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] [2021-11-09 09:41:22,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 09:41:22,073 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:22,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:22,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1706910886, now seen corresponding path program 1 times [2021-11-09 09:41:22,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:22,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410320786] [2021-11-09 09:41:22,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:22,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:22,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:22,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:22,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410320786] [2021-11-09 09:41:22,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410320786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:22,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:22,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-09 09:41:22,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123063464] [2021-11-09 09:41:22,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-09 09:41:22,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:22,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-09 09:41:22,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-11-09 09:41:22,702 INFO L87 Difference]: Start difference. First operand 318 states and 428 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:24,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:24,586 INFO L93 Difference]: Finished difference Result 780 states and 1075 transitions. [2021-11-09 09:41:24,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 09:41:24,587 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-11-09 09:41:24,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:24,592 INFO L225 Difference]: With dead ends: 780 [2021-11-09 09:41:24,593 INFO L226 Difference]: Without dead ends: 776 [2021-11-09 09:41:24,594 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=266, Invalid=1140, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 09:41:24,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-11-09 09:41:24,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 322. [2021-11-09 09:41:24,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 316 states have (on average 1.3734177215189873) internal successors, (434), 321 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:24,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 434 transitions. [2021-11-09 09:41:24,662 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 434 transitions. Word has length 52 [2021-11-09 09:41:24,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:24,662 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 434 transitions. [2021-11-09 09:41:24,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:24,663 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 434 transitions. [2021-11-09 09:41:24,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-09 09:41:24,664 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:24,664 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] [2021-11-09 09:41:24,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 09:41:24,665 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:24,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:24,666 INFO L85 PathProgramCache]: Analyzing trace with hash -987220198, now seen corresponding path program 1 times [2021-11-09 09:41:24,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:24,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147234237] [2021-11-09 09:41:24,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:24,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:25,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:25,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:25,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147234237] [2021-11-09 09:41:25,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147234237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:25,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:25,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-09 09:41:25,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538454565] [2021-11-09 09:41:25,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 09:41:25,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:25,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 09:41:25,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-09 09:41:25,156 INFO L87 Difference]: Start difference. First operand 322 states and 434 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:26,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:26,178 INFO L93 Difference]: Finished difference Result 1305 states and 1887 transitions. [2021-11-09 09:41:26,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 09:41:26,178 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-09 09:41:26,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:26,187 INFO L225 Difference]: With dead ends: 1305 [2021-11-09 09:41:26,188 INFO L226 Difference]: Without dead ends: 1285 [2021-11-09 09:41:26,189 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2021-11-09 09:41:26,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2021-11-09 09:41:26,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 302. [2021-11-09 09:41:26,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 298 states have (on average 1.3724832214765101) internal successors, (409), 301 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:26,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 409 transitions. [2021-11-09 09:41:26,272 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 409 transitions. Word has length 53 [2021-11-09 09:41:26,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:26,273 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 409 transitions. [2021-11-09 09:41:26,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:26,273 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 409 transitions. [2021-11-09 09:41:26,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-09 09:41:26,274 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:26,274 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] [2021-11-09 09:41:26,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 09:41:26,275 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:26,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:26,276 INFO L85 PathProgramCache]: Analyzing trace with hash 190692674, now seen corresponding path program 1 times [2021-11-09 09:41:26,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:26,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94197371] [2021-11-09 09:41:26,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:26,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:26,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:26,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94197371] [2021-11-09 09:41:26,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94197371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:26,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:26,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-09 09:41:26,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234475859] [2021-11-09 09:41:26,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:41:26,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:26,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:41:26,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:41:26,552 INFO L87 Difference]: Start difference. First operand 302 states and 409 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:28,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:28,273 INFO L93 Difference]: Finished difference Result 1138 states and 1610 transitions. [2021-11-09 09:41:28,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:41:28,285 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-09 09:41:28,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:28,293 INFO L225 Difference]: With dead ends: 1138 [2021-11-09 09:41:28,294 INFO L226 Difference]: Without dead ends: 1131 [2021-11-09 09:41:28,295 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=300, Invalid=822, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 09:41:28,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2021-11-09 09:41:28,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 302. [2021-11-09 09:41:28,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 298 states have (on average 1.3691275167785235) internal successors, (408), 301 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:28,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 408 transitions. [2021-11-09 09:41:28,385 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 408 transitions. Word has length 53 [2021-11-09 09:41:28,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:28,386 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 408 transitions. [2021-11-09 09:41:28,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:28,386 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 408 transitions. [2021-11-09 09:41:28,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-09 09:41:28,394 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:28,394 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] [2021-11-09 09:41:28,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 09:41:28,395 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:28,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:28,396 INFO L85 PathProgramCache]: Analyzing trace with hash -185701506, now seen corresponding path program 1 times [2021-11-09 09:41:28,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:28,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372908043] [2021-11-09 09:41:28,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:28,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:28,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:28,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372908043] [2021-11-09 09:41:28,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372908043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:28,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:28,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-09 09:41:28,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76809760] [2021-11-09 09:41:28,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 09:41:28,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:28,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 09:41:28,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:41:28,911 INFO L87 Difference]: Start difference. First operand 302 states and 408 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:30,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:30,233 INFO L93 Difference]: Finished difference Result 744 states and 1058 transitions. [2021-11-09 09:41:30,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 09:41:30,234 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-09 09:41:30,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:30,240 INFO L225 Difference]: With dead ends: 744 [2021-11-09 09:41:30,240 INFO L226 Difference]: Without dead ends: 576 [2021-11-09 09:41:30,241 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2021-11-09 09:41:30,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-11-09 09:41:30,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 296. [2021-11-09 09:41:30,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 293 states have (on average 1.3651877133105803) internal successors, (400), 295 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:30,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 400 transitions. [2021-11-09 09:41:30,360 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 400 transitions. Word has length 53 [2021-11-09 09:41:30,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:30,360 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 400 transitions. [2021-11-09 09:41:30,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:30,361 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 400 transitions. [2021-11-09 09:41:30,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-09 09:41:30,361 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:30,362 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] [2021-11-09 09:41:30,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 09:41:30,362 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:30,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:30,363 INFO L85 PathProgramCache]: Analyzing trace with hash 339917441, now seen corresponding path program 1 times [2021-11-09 09:41:30,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:30,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335200149] [2021-11-09 09:41:30,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:30,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:30,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:30,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:30,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335200149] [2021-11-09 09:41:30,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335200149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:30,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:30,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 09:41:30,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998203213] [2021-11-09 09:41:30,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:41:30,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:30,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:41:30,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:41:30,518 INFO L87 Difference]: Start difference. First operand 296 states and 400 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:31,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:31,333 INFO L93 Difference]: Finished difference Result 804 states and 1138 transitions. [2021-11-09 09:41:31,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-09 09:41:31,334 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-09 09:41:31,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:31,339 INFO L225 Difference]: With dead ends: 804 [2021-11-09 09:41:31,339 INFO L226 Difference]: Without dead ends: 622 [2021-11-09 09:41:31,340 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2021-11-09 09:41:31,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-11-09 09:41:31,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 296. [2021-11-09 09:41:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 293 states have (on average 1.3617747440273038) internal successors, (399), 295 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:31,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 399 transitions. [2021-11-09 09:41:31,438 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 399 transitions. Word has length 53 [2021-11-09 09:41:31,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:31,438 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 399 transitions. [2021-11-09 09:41:31,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:31,439 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 399 transitions. [2021-11-09 09:41:31,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-09 09:41:31,443 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:31,444 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] [2021-11-09 09:41:31,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 09:41:31,444 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:31,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:31,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1175492289, now seen corresponding path program 1 times [2021-11-09 09:41:31,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:31,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715350356] [2021-11-09 09:41:31,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:31,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:31,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:31,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:31,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715350356] [2021-11-09 09:41:31,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715350356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:31,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:31,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:41:31,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48758630] [2021-11-09 09:41:31,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:41:31,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:31,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:41:31,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:41:31,614 INFO L87 Difference]: Start difference. First operand 296 states and 399 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:31,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:31,964 INFO L93 Difference]: Finished difference Result 484 states and 674 transitions. [2021-11-09 09:41:31,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:41:31,965 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-09 09:41:31,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:31,966 INFO L225 Difference]: With dead ends: 484 [2021-11-09 09:41:31,967 INFO L226 Difference]: Without dead ends: 302 [2021-11-09 09:41:31,968 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:41:31,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-11-09 09:41:32,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 296. [2021-11-09 09:41:32,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 293 states have (on average 1.3583617747440273) internal successors, (398), 295 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:32,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 398 transitions. [2021-11-09 09:41:32,072 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 398 transitions. Word has length 54 [2021-11-09 09:41:32,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:32,073 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 398 transitions. [2021-11-09 09:41:32,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:32,073 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 398 transitions. [2021-11-09 09:41:32,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-09 09:41:32,074 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:32,074 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] [2021-11-09 09:41:32,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 09:41:32,075 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:32,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:32,075 INFO L85 PathProgramCache]: Analyzing trace with hash -746268687, now seen corresponding path program 1 times [2021-11-09 09:41:32,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:32,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93266784] [2021-11-09 09:41:32,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:32,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:32,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:32,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:32,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93266784] [2021-11-09 09:41:32,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93266784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:32,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:32,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:41:32,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700678516] [2021-11-09 09:41:32,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:41:32,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:32,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:41:32,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:41:32,219 INFO L87 Difference]: Start difference. First operand 296 states and 398 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:32,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:32,871 INFO L93 Difference]: Finished difference Result 407 states and 549 transitions. [2021-11-09 09:41:32,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 09:41:32,871 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-09 09:41:32,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:32,874 INFO L225 Difference]: With dead ends: 407 [2021-11-09 09:41:32,875 INFO L226 Difference]: Without dead ends: 400 [2021-11-09 09:41:32,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2021-11-09 09:41:32,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-11-09 09:41:32,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 292. [2021-11-09 09:41:32,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 289 states have (on average 1.3598615916955017) internal successors, (393), 291 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:32,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 393 transitions. [2021-11-09 09:41:32,990 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 393 transitions. Word has length 54 [2021-11-09 09:41:32,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:32,991 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 393 transitions. [2021-11-09 09:41:32,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:32,992 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 393 transitions. [2021-11-09 09:41:32,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-09 09:41:32,993 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:32,993 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] [2021-11-09 09:41:32,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 09:41:32,994 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:32,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:32,994 INFO L85 PathProgramCache]: Analyzing trace with hash -11876974, now seen corresponding path program 1 times [2021-11-09 09:41:32,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:32,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96510985] [2021-11-09 09:41:32,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:32,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:33,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:33,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96510985] [2021-11-09 09:41:33,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96510985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:33,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:33,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:41:33,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240235307] [2021-11-09 09:41:33,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:41:33,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:33,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:41:33,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:41:33,560 INFO L87 Difference]: Start difference. First operand 292 states and 393 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:34,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:34,856 INFO L93 Difference]: Finished difference Result 492 states and 675 transitions. [2021-11-09 09:41:34,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 09:41:34,857 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-09 09:41:34,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:34,860 INFO L225 Difference]: With dead ends: 492 [2021-11-09 09:41:34,860 INFO L226 Difference]: Without dead ends: 484 [2021-11-09 09:41:34,861 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=215, Invalid=777, Unknown=0, NotChecked=0, Total=992 [2021-11-09 09:41:34,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-11-09 09:41:34,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 297. [2021-11-09 09:41:34,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 294 states have (on average 1.3537414965986394) internal successors, (398), 296 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 398 transitions. [2021-11-09 09:41:34,957 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 398 transitions. Word has length 55 [2021-11-09 09:41:34,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:34,958 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 398 transitions. [2021-11-09 09:41:34,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:34,958 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 398 transitions. [2021-11-09 09:41:34,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-09 09:41:34,959 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:34,960 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] [2021-11-09 09:41:34,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 09:41:34,960 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:34,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:34,961 INFO L85 PathProgramCache]: Analyzing trace with hash -824240014, now seen corresponding path program 1 times [2021-11-09 09:41:34,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:34,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431055665] [2021-11-09 09:41:34,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:34,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:35,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:35,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:35,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431055665] [2021-11-09 09:41:35,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431055665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:35,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:35,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-09 09:41:35,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739133797] [2021-11-09 09:41:35,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:41:35,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:35,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:41:35,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:41:35,518 INFO L87 Difference]: Start difference. First operand 297 states and 398 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:37,681 INFO L93 Difference]: Finished difference Result 1672 states and 2449 transitions. [2021-11-09 09:41:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:41:37,682 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-09 09:41:37,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:37,693 INFO L225 Difference]: With dead ends: 1672 [2021-11-09 09:41:37,693 INFO L226 Difference]: Without dead ends: 1666 [2021-11-09 09:41:37,695 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=226, Invalid=964, Unknown=0, NotChecked=0, Total=1190 [2021-11-09 09:41:37,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2021-11-09 09:41:37,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 297. [2021-11-09 09:41:37,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 294 states have (on average 1.3503401360544218) internal successors, (397), 296 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:37,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 397 transitions. [2021-11-09 09:41:37,825 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 397 transitions. Word has length 55 [2021-11-09 09:41:37,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:37,826 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 397 transitions. [2021-11-09 09:41:37,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:37,826 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 397 transitions. [2021-11-09 09:41:37,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 09:41:37,827 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:37,827 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] [2021-11-09 09:41:37,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-09 09:41:37,828 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:37,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:37,829 INFO L85 PathProgramCache]: Analyzing trace with hash -995695438, now seen corresponding path program 1 times [2021-11-09 09:41:37,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:37,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165922050] [2021-11-09 09:41:37,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:37,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:38,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:38,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:38,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165922050] [2021-11-09 09:41:38,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165922050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:38,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:38,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-09 09:41:38,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154261267] [2021-11-09 09:41:38,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 09:41:38,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:38,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 09:41:38,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:41:38,533 INFO L87 Difference]: Start difference. First operand 297 states and 397 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:41,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:41,697 INFO L93 Difference]: Finished difference Result 1696 states and 2466 transitions. [2021-11-09 09:41:41,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 09:41:41,698 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-09 09:41:41,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:41,707 INFO L225 Difference]: With dead ends: 1696 [2021-11-09 09:41:41,707 INFO L226 Difference]: Without dead ends: 1690 [2021-11-09 09:41:41,708 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2021-11-09 09:41:41,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2021-11-09 09:41:41,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 297. [2021-11-09 09:41:41,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 294 states have (on average 1.346938775510204) internal successors, (396), 296 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:41,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 396 transitions. [2021-11-09 09:41:41,837 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 396 transitions. Word has length 56 [2021-11-09 09:41:41,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:41,838 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 396 transitions. [2021-11-09 09:41:41,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:41,838 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 396 transitions. [2021-11-09 09:41:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 09:41:41,839 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:41,840 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] [2021-11-09 09:41:41,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-09 09:41:41,840 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:41,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:41,841 INFO L85 PathProgramCache]: Analyzing trace with hash 623432965, now seen corresponding path program 1 times [2021-11-09 09:41:41,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:41,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609557923] [2021-11-09 09:41:41,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:41,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:42,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:42,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:42,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609557923] [2021-11-09 09:41:42,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609557923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:42,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:42,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 09:41:42,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349926350] [2021-11-09 09:41:42,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:41:42,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:42,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:41:42,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:41:42,101 INFO L87 Difference]: Start difference. First operand 297 states and 396 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:42,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:42,860 INFO L93 Difference]: Finished difference Result 823 states and 1176 transitions. [2021-11-09 09:41:42,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:41:42,861 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-09 09:41:42,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:42,867 INFO L225 Difference]: With dead ends: 823 [2021-11-09 09:41:42,867 INFO L226 Difference]: Without dead ends: 800 [2021-11-09 09:41:42,868 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:41:42,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2021-11-09 09:41:42,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 274. [2021-11-09 09:41:42,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 272 states have (on average 1.3639705882352942) internal successors, (371), 273 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:42,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 371 transitions. [2021-11-09 09:41:42,983 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 371 transitions. Word has length 56 [2021-11-09 09:41:42,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:42,983 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 371 transitions. [2021-11-09 09:41:42,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:42,984 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 371 transitions. [2021-11-09 09:41:42,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 09:41:42,985 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:42,985 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] [2021-11-09 09:41:42,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-09 09:41:42,986 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:42,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:42,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1326812170, now seen corresponding path program 1 times [2021-11-09 09:41:42,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:42,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711202609] [2021-11-09 09:41:42,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:42,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:43,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:43,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:43,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711202609] [2021-11-09 09:41:43,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711202609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:43,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:43,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-09 09:41:43,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232591878] [2021-11-09 09:41:43,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:41:43,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:43,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:41:43,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:41:43,369 INFO L87 Difference]: Start difference. First operand 274 states and 371 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:44,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:44,309 INFO L93 Difference]: Finished difference Result 634 states and 900 transitions. [2021-11-09 09:41:44,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 09:41:44,318 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-09 09:41:44,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:44,323 INFO L225 Difference]: With dead ends: 634 [2021-11-09 09:41:44,323 INFO L226 Difference]: Without dead ends: 628 [2021-11-09 09:41:44,324 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-11-09 09:41:44,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-11-09 09:41:44,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 268. [2021-11-09 09:41:44,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.3632958801498127) internal successors, (364), 267 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:44,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 364 transitions. [2021-11-09 09:41:44,417 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 364 transitions. Word has length 56 [2021-11-09 09:41:44,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:44,418 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 364 transitions. [2021-11-09 09:41:44,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:44,418 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 364 transitions. [2021-11-09 09:41:44,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-09 09:41:44,419 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:44,419 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] [2021-11-09 09:41:44,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-09 09:41:44,420 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:44,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:44,421 INFO L85 PathProgramCache]: Analyzing trace with hash 2042294308, now seen corresponding path program 1 times [2021-11-09 09:41:44,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:44,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275664403] [2021-11-09 09:41:44,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:44,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:44,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:44,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:44,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275664403] [2021-11-09 09:41:44,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275664403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:44,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:44,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:41:44,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266019117] [2021-11-09 09:41:44,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:41:44,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:44,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:41:44,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:41:44,488 INFO L87 Difference]: Start difference. First operand 268 states and 364 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:45,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:45,110 INFO L93 Difference]: Finished difference Result 1252 states and 1858 transitions. [2021-11-09 09:41:45,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:41:45,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-11-09 09:41:45,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:45,121 INFO L225 Difference]: With dead ends: 1252 [2021-11-09 09:41:45,121 INFO L226 Difference]: Without dead ends: 1088 [2021-11-09 09:41:45,122 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:41:45,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2021-11-09 09:41:45,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 430. [2021-11-09 09:41:45,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 1.407925407925408) internal successors, (604), 429 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:45,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 604 transitions. [2021-11-09 09:41:45,353 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 604 transitions. Word has length 73 [2021-11-09 09:41:45,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:45,353 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 604 transitions. [2021-11-09 09:41:45,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:45,354 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 604 transitions. [2021-11-09 09:41:45,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 09:41:45,355 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:45,356 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] [2021-11-09 09:41:45,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-09 09:41:45,356 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:45,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:45,357 INFO L85 PathProgramCache]: Analyzing trace with hash -786943772, now seen corresponding path program 1 times [2021-11-09 09:41:45,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:45,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179714495] [2021-11-09 09:41:45,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:45,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:45,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:45,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:45,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179714495] [2021-11-09 09:41:45,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179714495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:45,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:45,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:41:45,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731677168] [2021-11-09 09:41:45,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:41:45,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:45,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:41:45,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:41:45,420 INFO L87 Difference]: Start difference. First operand 430 states and 604 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:46,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:46,188 INFO L93 Difference]: Finished difference Result 1410 states and 2052 transitions. [2021-11-09 09:41:46,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:41:46,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-11-09 09:41:46,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:46,196 INFO L225 Difference]: With dead ends: 1410 [2021-11-09 09:41:46,196 INFO L226 Difference]: Without dead ends: 1084 [2021-11-09 09:41:46,197 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 [2021-11-09 09:41:46,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-11-09 09:41:46,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 534. [2021-11-09 09:41:46,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 533 states have (on average 1.403377110694184) internal successors, (748), 533 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:46,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 748 transitions. [2021-11-09 09:41:46,467 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 748 transitions. Word has length 75 [2021-11-09 09:41:46,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:46,468 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 748 transitions. [2021-11-09 09:41:46,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:46,468 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 748 transitions. [2021-11-09 09:41:46,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 09:41:46,470 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:46,470 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] [2021-11-09 09:41:46,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-09 09:41:46,471 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:46,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:46,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1322322984, now seen corresponding path program 1 times [2021-11-09 09:41:46,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:46,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872974358] [2021-11-09 09:41:46,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:46,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:46,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:46,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:46,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872974358] [2021-11-09 09:41:46,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872974358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:46,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:46,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:41:46,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886807111] [2021-11-09 09:41:46,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:41:46,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:46,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:41:46,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:41:46,531 INFO L87 Difference]: Start difference. First operand 534 states and 748 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:47,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:47,423 INFO L93 Difference]: Finished difference Result 1998 states and 2848 transitions. [2021-11-09 09:41:47,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:41:47,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-11-09 09:41:47,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:47,435 INFO L225 Difference]: With dead ends: 1998 [2021-11-09 09:41:47,435 INFO L226 Difference]: Without dead ends: 1568 [2021-11-09 09:41:47,437 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 [2021-11-09 09:41:47,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2021-11-09 09:41:47,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1002. [2021-11-09 09:41:47,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 1001 states have (on average 1.4265734265734267) internal successors, (1428), 1001 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:47,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1428 transitions. [2021-11-09 09:41:47,871 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1428 transitions. Word has length 75 [2021-11-09 09:41:47,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:47,872 INFO L470 AbstractCegarLoop]: Abstraction has 1002 states and 1428 transitions. [2021-11-09 09:41:47,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:47,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1428 transitions. [2021-11-09 09:41:47,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 09:41:47,874 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:47,874 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] [2021-11-09 09:41:47,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-09 09:41:47,875 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:47,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:47,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1446907099, now seen corresponding path program 1 times [2021-11-09 09:41:47,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:47,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366579066] [2021-11-09 09:41:47,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:47,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:47,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:47,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:47,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366579066] [2021-11-09 09:41:47,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366579066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:47,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:47,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:41:47,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459772434] [2021-11-09 09:41:47,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:41:47,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:47,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:41:47,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:41:47,930 INFO L87 Difference]: Start difference. First operand 1002 states and 1428 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:48,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:48,512 INFO L93 Difference]: Finished difference Result 1902 states and 2742 transitions. [2021-11-09 09:41:48,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:41:48,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-11-09 09:41:48,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:48,519 INFO L225 Difference]: With dead ends: 1902 [2021-11-09 09:41:48,519 INFO L226 Difference]: Without dead ends: 1004 [2021-11-09 09:41:48,521 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 [2021-11-09 09:41:48,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-11-09 09:41:48,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1002. [2021-11-09 09:41:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 1001 states have (on average 1.4105894105894106) internal successors, (1412), 1001 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:48,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1412 transitions. [2021-11-09 09:41:48,916 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1412 transitions. Word has length 75 [2021-11-09 09:41:48,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:48,916 INFO L470 AbstractCegarLoop]: Abstraction has 1002 states and 1412 transitions. [2021-11-09 09:41:48,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:48,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1412 transitions. [2021-11-09 09:41:48,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 09:41:48,918 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:48,919 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] [2021-11-09 09:41:48,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-09 09:41:48,919 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:48,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:48,920 INFO L85 PathProgramCache]: Analyzing trace with hash 2078767204, now seen corresponding path program 1 times [2021-11-09 09:41:48,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:48,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266134507] [2021-11-09 09:41:48,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:48,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:48,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:48,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:48,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266134507] [2021-11-09 09:41:48,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266134507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:48,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:48,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:41:48,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932417009] [2021-11-09 09:41:48,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:41:48,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:48,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:41:48,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:41:48,959 INFO L87 Difference]: Start difference. First operand 1002 states and 1412 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:49,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:49,748 INFO L93 Difference]: Finished difference Result 2638 states and 3750 transitions. [2021-11-09 09:41:49,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:41:49,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-11-09 09:41:49,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:49,758 INFO L225 Difference]: With dead ends: 2638 [2021-11-09 09:41:49,758 INFO L226 Difference]: Without dead ends: 1740 [2021-11-09 09:41:49,760 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 [2021-11-09 09:41:49,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2021-11-09 09:41:50,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1738. [2021-11-09 09:41:50,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1737 states have (on average 1.374784110535406) internal successors, (2388), 1737 states have internal predecessors, (2388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:50,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2388 transitions. [2021-11-09 09:41:50,460 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2388 transitions. Word has length 75 [2021-11-09 09:41:50,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:50,461 INFO L470 AbstractCegarLoop]: Abstraction has 1738 states and 2388 transitions. [2021-11-09 09:41:50,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:50,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2388 transitions. [2021-11-09 09:41:50,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 09:41:50,464 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:50,464 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:41:50,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-09 09:41:50,464 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:50,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:50,465 INFO L85 PathProgramCache]: Analyzing trace with hash 95104542, now seen corresponding path program 1 times [2021-11-09 09:41:50,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:50,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174199413] [2021-11-09 09:41:50,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:50,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:50,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:50,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174199413] [2021-11-09 09:41:50,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174199413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:50,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:50,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:41:50,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631451736] [2021-11-09 09:41:50,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:41:50,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:50,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:41:50,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:41:50,557 INFO L87 Difference]: Start difference. First operand 1738 states and 2388 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:52,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:52,803 INFO L93 Difference]: Finished difference Result 6450 states and 8896 transitions. [2021-11-09 09:41:52,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:41:52,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-11-09 09:41:52,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:52,831 INFO L225 Difference]: With dead ends: 6450 [2021-11-09 09:41:52,831 INFO L226 Difference]: Without dead ends: 4816 [2021-11-09 09:41:52,835 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 [2021-11-09 09:41:52,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4816 states. [2021-11-09 09:41:54,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4816 to 3050. [2021-11-09 09:41:54,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3050 states, 3049 states have (on average 1.3630698589701542) internal successors, (4156), 3049 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:54,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3050 states to 3050 states and 4156 transitions. [2021-11-09 09:41:54,142 INFO L78 Accepts]: Start accepts. Automaton has 3050 states and 4156 transitions. Word has length 75 [2021-11-09 09:41:54,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:54,143 INFO L470 AbstractCegarLoop]: Abstraction has 3050 states and 4156 transitions. [2021-11-09 09:41:54,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:54,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3050 states and 4156 transitions. [2021-11-09 09:41:54,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-09 09:41:54,146 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:54,146 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] [2021-11-09 09:41:54,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-09 09:41:54,147 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:54,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:54,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1963614716, now seen corresponding path program 1 times [2021-11-09 09:41:54,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:54,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138907787] [2021-11-09 09:41:54,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:54,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:54,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:54,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:54,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138907787] [2021-11-09 09:41:54,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138907787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:54,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:54,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:41:54,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814245856] [2021-11-09 09:41:54,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:41:54,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:54,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:41:54,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:41:54,222 INFO L87 Difference]: Start difference. First operand 3050 states and 4156 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:55,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:55,642 INFO L93 Difference]: Finished difference Result 5870 states and 8006 transitions. [2021-11-09 09:41:55,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:41:55,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-09 09:41:55,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:55,651 INFO L225 Difference]: With dead ends: 5870 [2021-11-09 09:41:55,651 INFO L226 Difference]: Without dead ends: 2924 [2021-11-09 09:41:55,655 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 [2021-11-09 09:41:55,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2021-11-09 09:41:56,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 2594. [2021-11-09 09:41:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2594 states, 2593 states have (on average 1.3467026610104127) internal successors, (3492), 2593 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:56,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 3492 transitions. [2021-11-09 09:41:56,738 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 3492 transitions. Word has length 76 [2021-11-09 09:41:56,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:56,739 INFO L470 AbstractCegarLoop]: Abstraction has 2594 states and 3492 transitions. [2021-11-09 09:41:56,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:56,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 3492 transitions. [2021-11-09 09:41:56,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-09 09:41:56,741 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:56,741 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] [2021-11-09 09:41:56,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-09 09:41:56,742 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:56,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:56,742 INFO L85 PathProgramCache]: Analyzing trace with hash -628172474, now seen corresponding path program 1 times [2021-11-09 09:41:56,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:56,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298621641] [2021-11-09 09:41:56,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:56,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:56,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:56,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:56,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298621641] [2021-11-09 09:41:56,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298621641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:56,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:56,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:41:56,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309614510] [2021-11-09 09:41:56,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:41:56,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:56,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:41:56,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:41:56,793 INFO L87 Difference]: Start difference. First operand 2594 states and 3492 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:57,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:41:57,839 INFO L93 Difference]: Finished difference Result 4902 states and 6590 transitions. [2021-11-09 09:41:57,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:41:57,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-09 09:41:57,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:41:57,844 INFO L225 Difference]: With dead ends: 4902 [2021-11-09 09:41:57,844 INFO L226 Difference]: Without dead ends: 2412 [2021-11-09 09:41:57,847 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 [2021-11-09 09:41:57,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-11-09 09:41:58,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2322. [2021-11-09 09:41:58,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2322 states, 2321 states have (on average 1.3252908229211546) internal successors, (3076), 2321 states have internal predecessors, (3076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:58,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 3076 transitions. [2021-11-09 09:41:58,910 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 3076 transitions. Word has length 77 [2021-11-09 09:41:58,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:41:58,911 INFO L470 AbstractCegarLoop]: Abstraction has 2322 states and 3076 transitions. [2021-11-09 09:41:58,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:41:58,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 3076 transitions. [2021-11-09 09:41:58,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-09 09:41:58,912 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:41:58,913 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] [2021-11-09 09:41:58,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-09 09:41:58,913 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:41:58,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:41:58,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1629320958, now seen corresponding path program 1 times [2021-11-09 09:41:58,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:41:58,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319697532] [2021-11-09 09:41:58,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:41:58,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:41:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:41:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:41:58,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:41:58,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319697532] [2021-11-09 09:41:58,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319697532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:41:58,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:41:58,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:41:58,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087449758] [2021-11-09 09:41:58,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:41:58,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:41:58,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:41:58,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:41:58,965 INFO L87 Difference]: Start difference. First operand 2322 states and 3076 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:00,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:42:00,006 INFO L93 Difference]: Finished difference Result 4561 states and 6060 transitions. [2021-11-09 09:42:00,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:42:00,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-09 09:42:00,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:42:00,011 INFO L225 Difference]: With dead ends: 4561 [2021-11-09 09:42:00,011 INFO L226 Difference]: Without dead ends: 2343 [2021-11-09 09:42:00,014 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:42:00,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2021-11-09 09:42:00,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 2296. [2021-11-09 09:42:00,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2296 states, 2295 states have (on average 1.3272331154684096) internal successors, (3046), 2295 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:00,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 3046 transitions. [2021-11-09 09:42:00,952 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 3046 transitions. Word has length 78 [2021-11-09 09:42:00,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:42:00,953 INFO L470 AbstractCegarLoop]: Abstraction has 2296 states and 3046 transitions. [2021-11-09 09:42:00,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:00,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 3046 transitions. [2021-11-09 09:42:00,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-09 09:42:00,953 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:42:00,954 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] [2021-11-09 09:42:00,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-09 09:42:00,954 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:42:00,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:42:00,954 INFO L85 PathProgramCache]: Analyzing trace with hash -763788569, now seen corresponding path program 1 times [2021-11-09 09:42:00,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:42:00,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047601355] [2021-11-09 09:42:00,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:42:00,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:42:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:42:01,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:42:01,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:42:01,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047601355] [2021-11-09 09:42:01,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047601355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:42:01,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:42:01,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:42:01,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382750059] [2021-11-09 09:42:01,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:42:01,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:42:01,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:42:01,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:42:01,006 INFO L87 Difference]: Start difference. First operand 2296 states and 3046 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:02,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:42:02,537 INFO L93 Difference]: Finished difference Result 5700 states and 7504 transitions. [2021-11-09 09:42:02,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:42:02,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-09 09:42:02,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:42:02,544 INFO L225 Difference]: With dead ends: 5700 [2021-11-09 09:42:02,544 INFO L226 Difference]: Without dead ends: 3482 [2021-11-09 09:42:02,547 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 [2021-11-09 09:42:02,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2021-11-09 09:42:03,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 3216. [2021-11-09 09:42:03,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3216 states, 3215 states have (on average 1.3045101088646966) internal successors, (4194), 3215 states have internal predecessors, (4194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:03,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3216 states to 3216 states and 4194 transitions. [2021-11-09 09:42:03,991 INFO L78 Accepts]: Start accepts. Automaton has 3216 states and 4194 transitions. Word has length 78 [2021-11-09 09:42:03,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:42:03,992 INFO L470 AbstractCegarLoop]: Abstraction has 3216 states and 4194 transitions. [2021-11-09 09:42:03,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:03,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3216 states and 4194 transitions. [2021-11-09 09:42:03,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-09 09:42:03,993 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:42:03,993 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] [2021-11-09 09:42:03,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-09 09:42:03,993 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:42:03,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:42:03,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1461539563, now seen corresponding path program 1 times [2021-11-09 09:42:03,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:42:03,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780994831] [2021-11-09 09:42:03,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:42:03,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:42:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:42:04,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:42:04,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:42:04,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780994831] [2021-11-09 09:42:04,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780994831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:42:04,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:42:04,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:42:04,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004304777] [2021-11-09 09:42:04,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:42:04,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:42:04,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:42:04,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:42:04,077 INFO L87 Difference]: Start difference. First operand 3216 states and 4194 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:06,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:42:06,883 INFO L93 Difference]: Finished difference Result 5049 states and 6565 transitions. [2021-11-09 09:42:06,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:42:06,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-09 09:42:06,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:42:06,892 INFO L225 Difference]: With dead ends: 5049 [2021-11-09 09:42:06,893 INFO L226 Difference]: Without dead ends: 5047 [2021-11-09 09:42:06,894 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 [2021-11-09 09:42:06,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5047 states. [2021-11-09 09:42:08,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5047 to 3312. [2021-11-09 09:42:08,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3312 states, 3311 states have (on average 1.2860163092721233) internal successors, (4258), 3311 states have internal predecessors, (4258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:08,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 4258 transitions. [2021-11-09 09:42:08,602 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 4258 transitions. Word has length 79 [2021-11-09 09:42:08,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:42:08,603 INFO L470 AbstractCegarLoop]: Abstraction has 3312 states and 4258 transitions. [2021-11-09 09:42:08,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:08,603 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 4258 transitions. [2021-11-09 09:42:08,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-09 09:42:08,604 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:42:08,605 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] [2021-11-09 09:42:08,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-09 09:42:08,605 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:42:08,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:42:08,606 INFO L85 PathProgramCache]: Analyzing trace with hash 965347417, now seen corresponding path program 1 times [2021-11-09 09:42:08,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:42:08,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209172955] [2021-11-09 09:42:08,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:42:08,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:42:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:42:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:42:08,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:42:08,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209172955] [2021-11-09 09:42:08,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209172955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:42:08,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:42:08,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:42:08,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279737626] [2021-11-09 09:42:08,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:42:08,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:42:08,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:42:08,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:42:08,657 INFO L87 Difference]: Start difference. First operand 3312 states and 4258 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:10,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:42:10,490 INFO L93 Difference]: Finished difference Result 7128 states and 9186 transitions. [2021-11-09 09:42:10,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:42:10,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-09 09:42:10,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:42:10,505 INFO L225 Difference]: With dead ends: 7128 [2021-11-09 09:42:10,506 INFO L226 Difference]: Without dead ends: 3894 [2021-11-09 09:42:10,513 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 [2021-11-09 09:42:10,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3894 states. [2021-11-09 09:42:12,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3894 to 3892. [2021-11-09 09:42:12,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3892 states, 3891 states have (on average 1.2716525314829092) internal successors, (4948), 3891 states have internal predecessors, (4948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:12,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3892 states to 3892 states and 4948 transitions. [2021-11-09 09:42:12,417 INFO L78 Accepts]: Start accepts. Automaton has 3892 states and 4948 transitions. Word has length 79 [2021-11-09 09:42:12,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:42:12,417 INFO L470 AbstractCegarLoop]: Abstraction has 3892 states and 4948 transitions. [2021-11-09 09:42:12,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:12,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3892 states and 4948 transitions. [2021-11-09 09:42:12,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-09 09:42:12,421 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:42:12,421 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:42:12,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-09 09:42:12,422 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:42:12,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:42:12,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1093196834, now seen corresponding path program 1 times [2021-11-09 09:42:12,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:42:12,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702418998] [2021-11-09 09:42:12,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:42:12,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:42:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:42:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:42:12,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:42:12,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702418998] [2021-11-09 09:42:12,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702418998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:42:12,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:42:12,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:42:12,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852318855] [2021-11-09 09:42:12,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:42:12,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:42:12,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:42:12,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:42:12,500 INFO L87 Difference]: Start difference. First operand 3892 states and 4948 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 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) [2021-11-09 09:42:18,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:42:18,506 INFO L93 Difference]: Finished difference Result 16340 states and 20734 transitions. [2021-11-09 09:42:18,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:42:18,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 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 100 [2021-11-09 09:42:18,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:42:18,524 INFO L225 Difference]: With dead ends: 16340 [2021-11-09 09:42:18,524 INFO L226 Difference]: Without dead ends: 12526 [2021-11-09 09:42:18,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:42:18,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12526 states. [2021-11-09 09:42:22,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12526 to 7124. [2021-11-09 09:42:22,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7124 states, 7123 states have (on average 1.264635687210445) internal successors, (9008), 7123 states have internal predecessors, (9008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:22,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7124 states to 7124 states and 9008 transitions. [2021-11-09 09:42:22,082 INFO L78 Accepts]: Start accepts. Automaton has 7124 states and 9008 transitions. Word has length 100 [2021-11-09 09:42:22,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:42:22,083 INFO L470 AbstractCegarLoop]: Abstraction has 7124 states and 9008 transitions. [2021-11-09 09:42:22,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 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) [2021-11-09 09:42:22,083 INFO L276 IsEmpty]: Start isEmpty. Operand 7124 states and 9008 transitions. [2021-11-09 09:42:22,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-09 09:42:22,086 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:42:22,087 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:42:22,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-09 09:42:22,087 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:42:22,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:42:22,088 INFO L85 PathProgramCache]: Analyzing trace with hash 557817622, now seen corresponding path program 1 times [2021-11-09 09:42:22,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:42:22,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130830943] [2021-11-09 09:42:22,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:42:22,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:42:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:42:22,164 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-09 09:42:22,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:42:22,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130830943] [2021-11-09 09:42:22,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130830943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:42:22,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:42:22,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:42:22,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221536425] [2021-11-09 09:42:22,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:42:22,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:42:22,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:42:22,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:42:22,167 INFO L87 Difference]: Start difference. First operand 7124 states and 9008 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 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) [2021-11-09 09:42:29,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:42:29,794 INFO L93 Difference]: Finished difference Result 19572 states and 24794 transitions. [2021-11-09 09:42:29,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:42:29,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 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 100 [2021-11-09 09:42:29,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:42:29,816 INFO L225 Difference]: With dead ends: 19572 [2021-11-09 09:42:29,816 INFO L226 Difference]: Without dead ends: 15758 [2021-11-09 09:42:29,821 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:42:29,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15758 states. [2021-11-09 09:42:35,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15758 to 11940. [2021-11-09 09:42:35,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11940 states, 11939 states have (on average 1.2578942960046906) internal successors, (15018), 11939 states have internal predecessors, (15018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:35,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11940 states to 11940 states and 15018 transitions. [2021-11-09 09:42:35,744 INFO L78 Accepts]: Start accepts. Automaton has 11940 states and 15018 transitions. Word has length 100 [2021-11-09 09:42:35,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:42:35,744 INFO L470 AbstractCegarLoop]: Abstraction has 11940 states and 15018 transitions. [2021-11-09 09:42:35,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 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) [2021-11-09 09:42:35,744 INFO L276 IsEmpty]: Start isEmpty. Operand 11940 states and 15018 transitions. [2021-11-09 09:42:35,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-09 09:42:35,748 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:42:35,748 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:42:35,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-09 09:42:35,749 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:42:35,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:42:35,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1975245148, now seen corresponding path program 1 times [2021-11-09 09:42:35,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:42:35,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736925546] [2021-11-09 09:42:35,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:42:35,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:42:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:42:35,825 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-09 09:42:35,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:42:35,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736925546] [2021-11-09 09:42:35,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736925546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:42:35,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:42:35,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:42:35,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947089438] [2021-11-09 09:42:35,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:42:35,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:42:35,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:42:35,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:42:35,828 INFO L87 Difference]: Start difference. First operand 11940 states and 15018 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) [2021-11-09 09:42:45,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:42:45,209 INFO L93 Difference]: Finished difference Result 22804 states and 28854 transitions. [2021-11-09 09:42:45,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:42:45,209 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 100 [2021-11-09 09:42:45,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:42:45,235 INFO L225 Difference]: With dead ends: 22804 [2021-11-09 09:42:45,235 INFO L226 Difference]: Without dead ends: 18990 [2021-11-09 09:42:45,242 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:42:45,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18990 states. [2021-11-09 09:42:52,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18990 to 15172. [2021-11-09 09:42:52,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15172 states, 15171 states have (on average 1.2575308153714324) internal successors, (19078), 15171 states have internal predecessors, (19078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:42:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15172 states to 15172 states and 19078 transitions. [2021-11-09 09:42:52,515 INFO L78 Accepts]: Start accepts. Automaton has 15172 states and 19078 transitions. Word has length 100 [2021-11-09 09:42:52,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:42:52,515 INFO L470 AbstractCegarLoop]: Abstraction has 15172 states and 19078 transitions. [2021-11-09 09:42:52,516 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) [2021-11-09 09:42:52,516 INFO L276 IsEmpty]: Start isEmpty. Operand 15172 states and 19078 transitions. [2021-11-09 09:42:52,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-09 09:42:52,520 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:42:52,520 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:42:52,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-09 09:42:52,520 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-09 09:42:52,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:42:52,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1381911094, now seen corresponding path program 1 times [2021-11-09 09:42:52,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:42:52,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121311092] [2021-11-09 09:42:52,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:42:52,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:42:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:42:52,796 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:42:52,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:42:52,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121311092] [2021-11-09 09:42:52,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121311092] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:42:52,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022754370] [2021-11-09 09:42:52,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:42:52,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:42:52,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f91499-01d2-4396-8050-8ebf603ef4ba/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:42:52,806 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f91499-01d2-4396-8050-8ebf603ef4ba/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:42:52,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f91499-01d2-4396-8050-8ebf603ef4ba/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 09:42:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:42:53,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 09:42:53,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:42:54,768 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:42:54,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022754370] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:42:54,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:42:54,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-11-09 09:42:54,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625660524] [2021-11-09 09:42:54,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-09 09:42:54,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:42:54,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-09 09:42:54,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-11-09 09:42:54,772 INFO L87 Difference]: Start difference. First operand 15172 states and 19078 transitions. Second operand has 20 states, 20 states have (on average 9.4) internal successors, (188), 19 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:44:19,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:44:19,107 INFO L93 Difference]: Finished difference Result 132306 states and 162617 transitions. [2021-11-09 09:44:19,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2021-11-09 09:44:19,108 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.4) internal successors, (188), 19 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-09 09:44:19,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:44:19,375 INFO L225 Difference]: With dead ends: 132306 [2021-11-09 09:44:19,375 INFO L226 Difference]: Without dead ends: 117212 [2021-11-09 09:44:19,443 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17223 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=6014, Invalid=36216, Unknown=0, NotChecked=0, Total=42230 [2021-11-09 09:44:19,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117212 states.