./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/bin/uautomizer-DrprNOufMa --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 d7923672572112c1e23e765d37ba0d9265e37954a51bbbf4393296aaafd9ce3e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:06:42,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:06:42,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:06:42,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:06:42,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:06:42,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:06:42,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:06:42,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:06:42,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:06:42,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:06:42,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:06:42,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:06:42,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:06:42,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:06:42,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:06:42,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:06:42,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:06:42,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:06:42,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:06:42,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:06:42,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:06:42,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:06:42,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:06:42,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:06:42,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:06:42,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:06:42,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:06:42,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:06:42,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:06:42,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:06:42,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:06:42,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:06:42,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:06:42,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:06:42,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:06:42,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:06:42,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:06:42,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:06:42,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:06:42,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:06:42,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:06:42,142 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:06:42,165 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:06:42,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:06:42,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:06:42,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:06:42,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:06:42,166 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:06:42,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:06:42,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:06:42,167 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:06:42,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:06:42,167 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:06:42,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:06:42,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:06:42,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:06:42,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:06:42,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:06:42,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:06:42,168 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:06:42,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:06:42,168 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:06:42,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:06:42,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:06:42,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:06:42,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:06:42,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:06:42,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:06:42,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:06:42,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:06:42,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:06:42,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:06:42,170 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:06:42,170 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:06:42,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:06:42,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:06:42,170 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_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7923672572112c1e23e765d37ba0d9265e37954a51bbbf4393296aaafd9ce3e [2021-12-06 22:06:42,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:06:42,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:06:42,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:06:42,386 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:06:42,386 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:06:42,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-06 22:06:42,430 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/bin/uautomizer-DrprNOufMa/data/1b39d761d/fd085c9a367a4de3ad92ed42005da263/FLAG06ba40ee6 [2021-12-06 22:06:42,903 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:06:42,904 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-06 22:06:42,917 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/bin/uautomizer-DrprNOufMa/data/1b39d761d/fd085c9a367a4de3ad92ed42005da263/FLAG06ba40ee6 [2021-12-06 22:06:42,928 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/bin/uautomizer-DrprNOufMa/data/1b39d761d/fd085c9a367a4de3ad92ed42005da263 [2021-12-06 22:06:42,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:06:42,931 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:06:42,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:06:42,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:06:42,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:06:42,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:06:42" (1/1) ... [2021-12-06 22:06:42,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b504a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:06:42, skipping insertion in model container [2021-12-06 22:06:42,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:06:42" (1/1) ... [2021-12-06 22:06:42,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:06:43,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:06:43,190 WARN L230 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_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[9988,10001] [2021-12-06 22:06:43,247 WARN L230 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_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24517,24530] [2021-12-06 22:06:43,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:06:43,391 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:06:43,439 WARN L230 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_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[9988,10001] [2021-12-06 22:06:43,472 WARN L230 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_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24517,24530] [2021-12-06 22:06:43,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:06:43,576 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:06:43,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:06:43 WrapperNode [2021-12-06 22:06:43,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:06:43,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:06:43,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:06:43,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:06:43,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:06:43" (1/1) ... [2021-12-06 22:06:43,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:06:43" (1/1) ... [2021-12-06 22:06:43,666 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3378 [2021-12-06 22:06:43,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:06:43,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:06:43,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:06:43,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:06:43,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:06:43" (1/1) ... [2021-12-06 22:06:43,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:06:43" (1/1) ... [2021-12-06 22:06:43,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:06:43" (1/1) ... [2021-12-06 22:06:43,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:06:43" (1/1) ... [2021-12-06 22:06:43,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:06:43" (1/1) ... [2021-12-06 22:06:43,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:06:43" (1/1) ... [2021-12-06 22:06:43,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:06:43" (1/1) ... [2021-12-06 22:06:43,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:06:43,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:06:43,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:06:43,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:06:43,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:06:43" (1/1) ... [2021-12-06 22:06:43,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:06:43,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:06:43,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:06:43,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:06:43,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:06:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:06:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:06:43,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:06:43,937 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:06:43,938 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:06:45,000 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:06:45,013 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:06:45,013 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 22:06:45,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:06:45 BoogieIcfgContainer [2021-12-06 22:06:45,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:06:45,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:06:45,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:06:45,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:06:45,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:06:42" (1/3) ... [2021-12-06 22:06:45,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a16ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:06:45, skipping insertion in model container [2021-12-06 22:06:45,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:06:43" (2/3) ... [2021-12-06 22:06:45,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a16ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:06:45, skipping insertion in model container [2021-12-06 22:06:45,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:06:45" (3/3) ... [2021-12-06 22:06:45,021 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-06 22:06:45,025 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:06:45,025 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 22:06:45,064 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:06:45,069 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 [2021-12-06 22:06:45,069 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 22:06:45,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 702 states, 699 states have (on average 1.7854077253218885) internal successors, (1248), 701 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:45,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-06 22:06:45,116 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:45,117 INFO L514 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] [2021-12-06 22:06:45,117 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:45,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:45,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1557815088, now seen corresponding path program 1 times [2021-12-06 22:06:45,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:45,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517018380] [2021-12-06 22:06:45,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:45,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:45,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:45,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:45,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517018380] [2021-12-06 22:06:45,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517018380] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:45,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:06:45,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:06:45,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960230459] [2021-12-06 22:06:45,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:45,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:06:45,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:45,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:06:45,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:06:45,443 INFO L87 Difference]: Start difference. First operand has 702 states, 699 states have (on average 1.7854077253218885) internal successors, (1248), 701 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:45,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:45,587 INFO L93 Difference]: Finished difference Result 1063 states and 1849 transitions. [2021-12-06 22:06:45,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:06:45,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-12-06 22:06:45,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:45,605 INFO L225 Difference]: With dead ends: 1063 [2021-12-06 22:06:45,605 INFO L226 Difference]: Without dead ends: 842 [2021-12-06 22:06:45,609 INFO L932 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 [2021-12-06 22:06:45,611 INFO L933 BasicCegarLoop]: 1246 mSDtfsCounter, 630 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 2071 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:45,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [630 Valid, 2071 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:06:45,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-12-06 22:06:45,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 840. [2021-12-06 22:06:45,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 838 states have (on average 1.3723150357995226) internal successors, (1150), 839 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:45,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1150 transitions. [2021-12-06 22:06:45,684 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1150 transitions. Word has length 62 [2021-12-06 22:06:45,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:45,685 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 1150 transitions. [2021-12-06 22:06:45,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:45,685 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1150 transitions. [2021-12-06 22:06:45,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 22:06:45,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:45,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:45,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:06:45,691 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:45,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:45,692 INFO L85 PathProgramCache]: Analyzing trace with hash 701475668, now seen corresponding path program 1 times [2021-12-06 22:06:45,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:45,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055241440] [2021-12-06 22:06:45,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:45,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:45,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:45,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:45,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055241440] [2021-12-06 22:06:45,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055241440] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:45,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:06:45,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:06:45,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557073120] [2021-12-06 22:06:45,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:45,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:06:45,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:45,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:06:45,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:06:45,779 INFO L87 Difference]: Start difference. First operand 840 states and 1150 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:45,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:45,904 INFO L93 Difference]: Finished difference Result 1461 states and 2022 transitions. [2021-12-06 22:06:45,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:06:45,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-06 22:06:45,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:45,912 INFO L225 Difference]: With dead ends: 1461 [2021-12-06 22:06:45,912 INFO L226 Difference]: Without dead ends: 1221 [2021-12-06 22:06:45,915 INFO L932 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 [2021-12-06 22:06:45,916 INFO L933 BasicCegarLoop]: 1034 mSDtfsCounter, 548 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:45,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 1679 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:06:45,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2021-12-06 22:06:45,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1217. [2021-12-06 22:06:45,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1215 states have (on average 1.359670781893004) internal successors, (1652), 1216 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:45,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1652 transitions. [2021-12-06 22:06:45,994 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1652 transitions. Word has length 63 [2021-12-06 22:06:45,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:45,995 INFO L470 AbstractCegarLoop]: Abstraction has 1217 states and 1652 transitions. [2021-12-06 22:06:45,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:45,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1652 transitions. [2021-12-06 22:06:45,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 22:06:45,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:45,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:45,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:06:45,998 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:45,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:45,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1921206290, now seen corresponding path program 1 times [2021-12-06 22:06:45,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:45,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150613016] [2021-12-06 22:06:45,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:45,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:46,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:46,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:46,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150613016] [2021-12-06 22:06:46,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150613016] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:46,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:06:46,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:06:46,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347850701] [2021-12-06 22:06:46,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:46,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:06:46,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:46,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:06:46,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:06:46,064 INFO L87 Difference]: Start difference. First operand 1217 states and 1652 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:46,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:46,135 INFO L93 Difference]: Finished difference Result 2215 states and 3114 transitions. [2021-12-06 22:06:46,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:06:46,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-06 22:06:46,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:46,143 INFO L225 Difference]: With dead ends: 2215 [2021-12-06 22:06:46,143 INFO L226 Difference]: Without dead ends: 1684 [2021-12-06 22:06:46,145 INFO L932 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 [2021-12-06 22:06:46,146 INFO L933 BasicCegarLoop]: 947 mSDtfsCounter, 493 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:46,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 1576 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:06:46,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2021-12-06 22:06:46,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1680. [2021-12-06 22:06:46,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1678 states have (on average 1.3790226460071513) internal successors, (2314), 1679 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:46,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2314 transitions. [2021-12-06 22:06:46,196 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2314 transitions. Word has length 63 [2021-12-06 22:06:46,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:46,197 INFO L470 AbstractCegarLoop]: Abstraction has 1680 states and 2314 transitions. [2021-12-06 22:06:46,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:46,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2314 transitions. [2021-12-06 22:06:46,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 22:06:46,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:46,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:46,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 22:06:46,200 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:46,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:46,200 INFO L85 PathProgramCache]: Analyzing trace with hash 951298247, now seen corresponding path program 1 times [2021-12-06 22:06:46,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:46,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476136780] [2021-12-06 22:06:46,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:46,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:46,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:46,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:46,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476136780] [2021-12-06 22:06:46,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476136780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:46,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:06:46,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:06:46,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860599859] [2021-12-06 22:06:46,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:46,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:06:46,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:46,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:06:46,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:06:46,292 INFO L87 Difference]: Start difference. First operand 1680 states and 2314 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:46,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:46,692 INFO L93 Difference]: Finished difference Result 3709 states and 5233 transitions. [2021-12-06 22:06:46,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:06:46,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-06 22:06:46,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:46,705 INFO L225 Difference]: With dead ends: 3709 [2021-12-06 22:06:46,705 INFO L226 Difference]: Without dead ends: 2253 [2021-12-06 22:06:46,708 INFO L932 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 [2021-12-06 22:06:46,710 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 2599 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2599 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:46,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2599 Valid, 574 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:06:46,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2021-12-06 22:06:46,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2251. [2021-12-06 22:06:46,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2249 states have (on average 1.4104046242774566) internal successors, (3172), 2250 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:46,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3172 transitions. [2021-12-06 22:06:46,829 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3172 transitions. Word has length 63 [2021-12-06 22:06:46,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:46,830 INFO L470 AbstractCegarLoop]: Abstraction has 2251 states and 3172 transitions. [2021-12-06 22:06:46,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:46,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3172 transitions. [2021-12-06 22:06:46,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-06 22:06:46,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:46,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:46,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:06:46,834 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:46,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:46,835 INFO L85 PathProgramCache]: Analyzing trace with hash -778566540, now seen corresponding path program 1 times [2021-12-06 22:06:46,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:46,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948279246] [2021-12-06 22:06:46,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:46,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:46,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:46,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948279246] [2021-12-06 22:06:46,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948279246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:46,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:06:46,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:06:46,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070921333] [2021-12-06 22:06:46,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:46,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:06:46,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:46,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:06:46,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:06:46,890 INFO L87 Difference]: Start difference. First operand 2251 states and 3172 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:47,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:47,030 INFO L93 Difference]: Finished difference Result 4648 states and 6627 transitions. [2021-12-06 22:06:47,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:06:47,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-12-06 22:06:47,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:47,044 INFO L225 Difference]: With dead ends: 4648 [2021-12-06 22:06:47,045 INFO L226 Difference]: Without dead ends: 3138 [2021-12-06 22:06:47,047 INFO L932 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 [2021-12-06 22:06:47,049 INFO L933 BasicCegarLoop]: 946 mSDtfsCounter, 578 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:47,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 1480 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:06:47,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2021-12-06 22:06:47,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 3128. [2021-12-06 22:06:47,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3128 states, 3126 states have (on average 1.3909149072296865) internal successors, (4348), 3127 states have internal predecessors, (4348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:47,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 4348 transitions. [2021-12-06 22:06:47,162 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 4348 transitions. Word has length 64 [2021-12-06 22:06:47,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:47,163 INFO L470 AbstractCegarLoop]: Abstraction has 3128 states and 4348 transitions. [2021-12-06 22:06:47,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:47,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 4348 transitions. [2021-12-06 22:06:47,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 22:06:47,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:47,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:47,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:06:47,168 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:47,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:47,168 INFO L85 PathProgramCache]: Analyzing trace with hash -535437974, now seen corresponding path program 1 times [2021-12-06 22:06:47,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:47,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803703413] [2021-12-06 22:06:47,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:47,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:47,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:47,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:47,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803703413] [2021-12-06 22:06:47,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803703413] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:47,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:06:47,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:06:47,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727284635] [2021-12-06 22:06:47,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:47,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:06:47,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:47,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:06:47,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:06:47,240 INFO L87 Difference]: Start difference. First operand 3128 states and 4348 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:47,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:47,645 INFO L93 Difference]: Finished difference Result 6737 states and 9460 transitions. [2021-12-06 22:06:47,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:06:47,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-06 22:06:47,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:47,662 INFO L225 Difference]: With dead ends: 6737 [2021-12-06 22:06:47,662 INFO L226 Difference]: Without dead ends: 3943 [2021-12-06 22:06:47,665 INFO L932 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 [2021-12-06 22:06:47,666 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 2267 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2267 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:47,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2267 Valid, 521 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:06:47,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2021-12-06 22:06:47,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 3927. [2021-12-06 22:06:47,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3927 states, 3925 states have (on average 1.3946496815286624) internal successors, (5474), 3926 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:47,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 5474 transitions. [2021-12-06 22:06:47,806 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 5474 transitions. Word has length 65 [2021-12-06 22:06:47,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:47,807 INFO L470 AbstractCegarLoop]: Abstraction has 3927 states and 5474 transitions. [2021-12-06 22:06:47,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:47,807 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 5474 transitions. [2021-12-06 22:06:47,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 22:06:47,810 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:47,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:47,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:06:47,811 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:47,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:47,811 INFO L85 PathProgramCache]: Analyzing trace with hash -881934793, now seen corresponding path program 1 times [2021-12-06 22:06:47,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:47,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966273361] [2021-12-06 22:06:47,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:47,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:47,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:47,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:47,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966273361] [2021-12-06 22:06:47,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966273361] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:47,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:06:47,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:06:47,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400907823] [2021-12-06 22:06:47,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:47,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:06:47,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:47,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:06:47,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:06:47,860 INFO L87 Difference]: Start difference. First operand 3927 states and 5474 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:48,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:48,279 INFO L93 Difference]: Finished difference Result 8987 states and 12601 transitions. [2021-12-06 22:06:48,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:06:48,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-06 22:06:48,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:48,300 INFO L225 Difference]: With dead ends: 8987 [2021-12-06 22:06:48,300 INFO L226 Difference]: Without dead ends: 5345 [2021-12-06 22:06:48,304 INFO L932 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 [2021-12-06 22:06:48,304 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 2339 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2339 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:48,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2339 Valid, 529 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:06:48,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2021-12-06 22:06:48,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 3927. [2021-12-06 22:06:48,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3927 states, 3925 states have (on average 1.3898089171974521) internal successors, (5455), 3926 states have internal predecessors, (5455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:48,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 5455 transitions. [2021-12-06 22:06:48,469 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 5455 transitions. Word has length 66 [2021-12-06 22:06:48,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:48,469 INFO L470 AbstractCegarLoop]: Abstraction has 3927 states and 5455 transitions. [2021-12-06 22:06:48,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:48,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 5455 transitions. [2021-12-06 22:06:48,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 22:06:48,473 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:48,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:48,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:06:48,473 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:48,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:48,473 INFO L85 PathProgramCache]: Analyzing trace with hash -741572489, now seen corresponding path program 1 times [2021-12-06 22:06:48,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:48,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896896726] [2021-12-06 22:06:48,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:48,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:48,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:48,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:48,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896896726] [2021-12-06 22:06:48,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896896726] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:48,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:06:48,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:06:48,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971502609] [2021-12-06 22:06:48,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:48,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:06:48,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:48,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:06:48,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:06:48,539 INFO L87 Difference]: Start difference. First operand 3927 states and 5455 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:49,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:49,504 INFO L93 Difference]: Finished difference Result 13399 states and 19176 transitions. [2021-12-06 22:06:49,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:06:49,505 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-06 22:06:49,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:49,543 INFO L225 Difference]: With dead ends: 13399 [2021-12-06 22:06:49,543 INFO L226 Difference]: Without dead ends: 12233 [2021-12-06 22:06:49,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:06:49,547 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 4771 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4771 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:49,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4771 Valid, 1026 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:06:49,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12233 states. [2021-12-06 22:06:49,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12233 to 3951. [2021-12-06 22:06:49,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3949 states have (on average 1.3894656875158269) internal successors, (5487), 3950 states have internal predecessors, (5487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:49,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 5487 transitions. [2021-12-06 22:06:49,755 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 5487 transitions. Word has length 66 [2021-12-06 22:06:49,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:49,755 INFO L470 AbstractCegarLoop]: Abstraction has 3951 states and 5487 transitions. [2021-12-06 22:06:49,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:49,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 5487 transitions. [2021-12-06 22:06:49,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 22:06:49,759 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:49,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:49,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:06:49,759 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:49,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:49,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1492647215, now seen corresponding path program 1 times [2021-12-06 22:06:49,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:49,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339649129] [2021-12-06 22:06:49,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:49,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:49,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:49,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:49,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339649129] [2021-12-06 22:06:49,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339649129] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:49,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:06:49,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:06:49,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781362137] [2021-12-06 22:06:49,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:49,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:06:49,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:49,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:06:49,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:06:49,816 INFO L87 Difference]: Start difference. First operand 3951 states and 5487 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:50,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:50,800 INFO L93 Difference]: Finished difference Result 12281 states and 17342 transitions. [2021-12-06 22:06:50,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:06:50,801 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-06 22:06:50,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:50,817 INFO L225 Difference]: With dead ends: 12281 [2021-12-06 22:06:50,817 INFO L226 Difference]: Without dead ends: 10904 [2021-12-06 22:06:50,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:06:50,821 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 4122 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4122 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:50,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4122 Valid, 938 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:06:50,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10904 states. [2021-12-06 22:06:51,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10904 to 3979. [2021-12-06 22:06:51,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3979 states, 3977 states have (on average 1.3887352275584612) internal successors, (5523), 3978 states have internal predecessors, (5523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:51,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5523 transitions. [2021-12-06 22:06:51,061 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5523 transitions. Word has length 67 [2021-12-06 22:06:51,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:51,061 INFO L470 AbstractCegarLoop]: Abstraction has 3979 states and 5523 transitions. [2021-12-06 22:06:51,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:51,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5523 transitions. [2021-12-06 22:06:51,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 22:06:51,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:51,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:51,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 22:06:51,064 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:51,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:51,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1629228246, now seen corresponding path program 1 times [2021-12-06 22:06:51,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:51,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744035915] [2021-12-06 22:06:51,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:51,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:51,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:51,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744035915] [2021-12-06 22:06:51,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744035915] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:51,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:06:51,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:06:51,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826391972] [2021-12-06 22:06:51,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:51,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:06:51,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:51,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:06:51,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:06:51,104 INFO L87 Difference]: Start difference. First operand 3979 states and 5523 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:51,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:51,587 INFO L93 Difference]: Finished difference Result 8837 states and 12282 transitions. [2021-12-06 22:06:51,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:06:51,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-06 22:06:51,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:51,594 INFO L225 Difference]: With dead ends: 8837 [2021-12-06 22:06:51,594 INFO L226 Difference]: Without dead ends: 5166 [2021-12-06 22:06:51,598 INFO L932 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 [2021-12-06 22:06:51,598 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 2057 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2057 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:51,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2057 Valid, 477 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:06:51,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5166 states. [2021-12-06 22:06:51,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5166 to 5144. [2021-12-06 22:06:51,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5144 states, 5142 states have (on average 1.3753403345001944) internal successors, (7072), 5143 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:51,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5144 states to 5144 states and 7072 transitions. [2021-12-06 22:06:51,912 INFO L78 Accepts]: Start accepts. Automaton has 5144 states and 7072 transitions. Word has length 67 [2021-12-06 22:06:51,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:51,912 INFO L470 AbstractCegarLoop]: Abstraction has 5144 states and 7072 transitions. [2021-12-06 22:06:51,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:51,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5144 states and 7072 transitions. [2021-12-06 22:06:51,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 22:06:51,916 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:51,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:51,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 22:06:51,916 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:51,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:51,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1569192756, now seen corresponding path program 1 times [2021-12-06 22:06:51,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:51,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623465845] [2021-12-06 22:06:51,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:51,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:51,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:51,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:51,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623465845] [2021-12-06 22:06:51,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623465845] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:51,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:06:51,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:06:51,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437141928] [2021-12-06 22:06:51,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:51,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:06:51,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:51,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:06:51,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:06:51,973 INFO L87 Difference]: Start difference. First operand 5144 states and 7072 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:53,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:53,663 INFO L93 Difference]: Finished difference Result 21648 states and 30629 transitions. [2021-12-06 22:06:53,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:06:53,664 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-06 22:06:53,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:53,686 INFO L225 Difference]: With dead ends: 21648 [2021-12-06 22:06:53,686 INFO L226 Difference]: Without dead ends: 19448 [2021-12-06 22:06:53,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:06:53,692 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 4207 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4207 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:53,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4207 Valid, 1010 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:06:53,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19448 states. [2021-12-06 22:06:54,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19448 to 5241. [2021-12-06 22:06:54,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5241 states, 5239 states have (on average 1.3744989501813323) internal successors, (7201), 5240 states have internal predecessors, (7201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:54,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5241 states to 5241 states and 7201 transitions. [2021-12-06 22:06:54,153 INFO L78 Accepts]: Start accepts. Automaton has 5241 states and 7201 transitions. Word has length 68 [2021-12-06 22:06:54,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:54,153 INFO L470 AbstractCegarLoop]: Abstraction has 5241 states and 7201 transitions. [2021-12-06 22:06:54,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:54,153 INFO L276 IsEmpty]: Start isEmpty. Operand 5241 states and 7201 transitions. [2021-12-06 22:06:54,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-06 22:06:54,156 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:54,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:54,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 22:06:54,157 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:54,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:54,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1812754967, now seen corresponding path program 1 times [2021-12-06 22:06:54,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:54,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534226062] [2021-12-06 22:06:54,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:54,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:54,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:54,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:54,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534226062] [2021-12-06 22:06:54,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534226062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:54,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:06:54,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:06:54,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136753045] [2021-12-06 22:06:54,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:54,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:06:54,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:54,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:06:54,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:06:54,251 INFO L87 Difference]: Start difference. First operand 5241 states and 7201 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:55,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:55,980 INFO L93 Difference]: Finished difference Result 15959 states and 22582 transitions. [2021-12-06 22:06:55,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:06:55,981 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-06 22:06:55,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:55,992 INFO L225 Difference]: With dead ends: 15959 [2021-12-06 22:06:55,993 INFO L226 Difference]: Without dead ends: 12925 [2021-12-06 22:06:55,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-06 22:06:55,997 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 3390 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3390 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:55,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3390 Valid, 1916 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:06:56,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12925 states. [2021-12-06 22:06:56,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12925 to 5237. [2021-12-06 22:06:56,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5235 states have (on average 1.3740210124164278) internal successors, (7193), 5236 states have internal predecessors, (7193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:56,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 7193 transitions. [2021-12-06 22:06:56,416 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 7193 transitions. Word has length 69 [2021-12-06 22:06:56,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:56,417 INFO L470 AbstractCegarLoop]: Abstraction has 5237 states and 7193 transitions. [2021-12-06 22:06:56,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:56,417 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 7193 transitions. [2021-12-06 22:06:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-06 22:06:56,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:56,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:56,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 22:06:56,420 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:56,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:56,421 INFO L85 PathProgramCache]: Analyzing trace with hash -445002902, now seen corresponding path program 1 times [2021-12-06 22:06:56,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:56,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089986496] [2021-12-06 22:06:56,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:56,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:56,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:56,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:56,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089986496] [2021-12-06 22:06:56,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089986496] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:56,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:06:56,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:06:56,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651750516] [2021-12-06 22:06:56,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:56,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:06:56,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:56,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:06:56,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:06:56,569 INFO L87 Difference]: Start difference. First operand 5237 states and 7193 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:59,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:59,319 INFO L93 Difference]: Finished difference Result 18098 states and 25263 transitions. [2021-12-06 22:06:59,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 22:06:59,320 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-06 22:06:59,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:59,333 INFO L225 Difference]: With dead ends: 18098 [2021-12-06 22:06:59,333 INFO L226 Difference]: Without dead ends: 16480 [2021-12-06 22:06:59,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2021-12-06 22:06:59,337 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 3411 mSDsluCounter, 2625 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3411 SdHoareTripleChecker+Valid, 3193 SdHoareTripleChecker+Invalid, 2564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:59,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3411 Valid, 3193 Invalid, 2564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2522 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 22:06:59,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16480 states. [2021-12-06 22:06:59,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16480 to 5237. [2021-12-06 22:06:59,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5235 states have (on average 1.3736389684813755) internal successors, (7191), 5236 states have internal predecessors, (7191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:59,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 7191 transitions. [2021-12-06 22:06:59,826 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 7191 transitions. Word has length 69 [2021-12-06 22:06:59,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:59,826 INFO L470 AbstractCegarLoop]: Abstraction has 5237 states and 7191 transitions. [2021-12-06 22:06:59,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:06:59,826 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 7191 transitions. [2021-12-06 22:06:59,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 22:06:59,830 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:59,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:59,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 22:06:59,830 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:59,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:59,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1293297930, now seen corresponding path program 1 times [2021-12-06 22:06:59,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:59,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449002606] [2021-12-06 22:06:59,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:59,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:59,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:59,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:59,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449002606] [2021-12-06 22:06:59,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449002606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:59,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:06:59,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:06:59,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717636364] [2021-12-06 22:06:59,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:59,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:06:59,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:59,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:06:59,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:06:59,916 INFO L87 Difference]: Start difference. First operand 5237 states and 7191 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:02,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:07:02,532 INFO L93 Difference]: Finished difference Result 20133 states and 28579 transitions. [2021-12-06 22:07:02,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 22:07:02,533 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-06 22:07:02,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:07:02,551 INFO L225 Difference]: With dead ends: 20133 [2021-12-06 22:07:02,551 INFO L226 Difference]: Without dead ends: 17057 [2021-12-06 22:07:02,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2021-12-06 22:07:02,557 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 2578 mSDsluCounter, 2039 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2578 SdHoareTripleChecker+Valid, 2506 SdHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:07:02,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2578 Valid, 2506 Invalid, 1778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:07:02,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17057 states. [2021-12-06 22:07:03,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17057 to 5213. [2021-12-06 22:07:03,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5213 states, 5211 states have (on average 1.3724812895797351) internal successors, (7152), 5212 states have internal predecessors, (7152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:03,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 7152 transitions. [2021-12-06 22:07:03,107 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 7152 transitions. Word has length 70 [2021-12-06 22:07:03,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:07:03,107 INFO L470 AbstractCegarLoop]: Abstraction has 5213 states and 7152 transitions. [2021-12-06 22:07:03,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:03,107 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 7152 transitions. [2021-12-06 22:07:03,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 22:07:03,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:07:03,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:07:03,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 22:07:03,111 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:07:03,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:07:03,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1552924457, now seen corresponding path program 1 times [2021-12-06 22:07:03,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:07:03,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23966955] [2021-12-06 22:07:03,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:07:03,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:07:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:03,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:07:03,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:07:03,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23966955] [2021-12-06 22:07:03,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23966955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:07:03,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:07:03,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 22:07:03,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554010500] [2021-12-06 22:07:03,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:07:03,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 22:07:03,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:07:03,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 22:07:03,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:07:03,343 INFO L87 Difference]: Start difference. First operand 5213 states and 7152 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:07,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:07:07,842 INFO L93 Difference]: Finished difference Result 30705 states and 43716 transitions. [2021-12-06 22:07:07,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 22:07:07,843 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-06 22:07:07,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:07:07,872 INFO L225 Difference]: With dead ends: 30705 [2021-12-06 22:07:07,872 INFO L226 Difference]: Without dead ends: 27473 [2021-12-06 22:07:07,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2021-12-06 22:07:07,881 INFO L933 BasicCegarLoop]: 852 mSDtfsCounter, 5184 mSDsluCounter, 4145 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5184 SdHoareTripleChecker+Valid, 4997 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:07:07,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5184 Valid, 4997 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:07:07,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27473 states. [2021-12-06 22:07:08,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27473 to 5003. [2021-12-06 22:07:08,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5003 states, 5001 states have (on average 1.3753249350129975) internal successors, (6878), 5002 states have internal predecessors, (6878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:08,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5003 states to 5003 states and 6878 transitions. [2021-12-06 22:07:08,646 INFO L78 Accepts]: Start accepts. Automaton has 5003 states and 6878 transitions. Word has length 70 [2021-12-06 22:07:08,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:07:08,646 INFO L470 AbstractCegarLoop]: Abstraction has 5003 states and 6878 transitions. [2021-12-06 22:07:08,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:08,646 INFO L276 IsEmpty]: Start isEmpty. Operand 5003 states and 6878 transitions. [2021-12-06 22:07:08,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 22:07:08,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:07:08,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:07:08,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 22:07:08,649 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:07:08,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:07:08,650 INFO L85 PathProgramCache]: Analyzing trace with hash -757708310, now seen corresponding path program 1 times [2021-12-06 22:07:08,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:07:08,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396795380] [2021-12-06 22:07:08,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:07:08,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:07:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:08,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:07:08,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:07:08,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396795380] [2021-12-06 22:07:08,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396795380] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:07:08,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:07:08,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:07:08,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896017566] [2021-12-06 22:07:08,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:07:08,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:07:08,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:07:08,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:07:08,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:07:08,700 INFO L87 Difference]: Start difference. First operand 5003 states and 6878 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:11,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:07:11,915 INFO L93 Difference]: Finished difference Result 18671 states and 26383 transitions. [2021-12-06 22:07:11,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:07:11,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-06 22:07:11,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:07:11,930 INFO L225 Difference]: With dead ends: 18671 [2021-12-06 22:07:11,930 INFO L226 Difference]: Without dead ends: 16635 [2021-12-06 22:07:11,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:07:11,934 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 2836 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2836 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:07:11,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2836 Valid, 1085 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:07:11,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16635 states. [2021-12-06 22:07:12,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16635 to 5074. [2021-12-06 22:07:12,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5074 states, 5072 states have (on average 1.3755914826498423) internal successors, (6977), 5073 states have internal predecessors, (6977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:12,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5074 states to 5074 states and 6977 transitions. [2021-12-06 22:07:12,797 INFO L78 Accepts]: Start accepts. Automaton has 5074 states and 6977 transitions. Word has length 70 [2021-12-06 22:07:12,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:07:12,797 INFO L470 AbstractCegarLoop]: Abstraction has 5074 states and 6977 transitions. [2021-12-06 22:07:12,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:12,797 INFO L276 IsEmpty]: Start isEmpty. Operand 5074 states and 6977 transitions. [2021-12-06 22:07:12,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 22:07:12,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:07:12,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:07:12,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 22:07:12,801 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:07:12,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:07:12,801 INFO L85 PathProgramCache]: Analyzing trace with hash 55096187, now seen corresponding path program 1 times [2021-12-06 22:07:12,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:07:12,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324229860] [2021-12-06 22:07:12,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:07:12,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:07:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:07:13,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:07:13,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324229860] [2021-12-06 22:07:13,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324229860] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:07:13,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:07:13,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 22:07:13,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786095206] [2021-12-06 22:07:13,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:07:13,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 22:07:13,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:07:13,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 22:07:13,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:07:13,044 INFO L87 Difference]: Start difference. First operand 5074 states and 6977 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:20,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:07:20,590 INFO L93 Difference]: Finished difference Result 35132 states and 50360 transitions. [2021-12-06 22:07:20,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 22:07:20,591 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-06 22:07:20,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:07:20,623 INFO L225 Difference]: With dead ends: 35132 [2021-12-06 22:07:20,623 INFO L226 Difference]: Without dead ends: 32100 [2021-12-06 22:07:20,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=221, Invalid=771, Unknown=0, NotChecked=0, Total=992 [2021-12-06 22:07:20,632 INFO L933 BasicCegarLoop]: 705 mSDtfsCounter, 5171 mSDsluCounter, 5540 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5171 SdHoareTripleChecker+Valid, 6245 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:07:20,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5171 Valid, 6245 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 22:07:20,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32100 states. [2021-12-06 22:07:21,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32100 to 5068. [2021-12-06 22:07:21,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5068 states, 5066 states have (on average 1.3748519542045006) internal successors, (6965), 5067 states have internal predecessors, (6965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:21,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5068 states to 5068 states and 6965 transitions. [2021-12-06 22:07:21,739 INFO L78 Accepts]: Start accepts. Automaton has 5068 states and 6965 transitions. Word has length 70 [2021-12-06 22:07:21,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:07:21,739 INFO L470 AbstractCegarLoop]: Abstraction has 5068 states and 6965 transitions. [2021-12-06 22:07:21,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:21,739 INFO L276 IsEmpty]: Start isEmpty. Operand 5068 states and 6965 transitions. [2021-12-06 22:07:21,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-06 22:07:21,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:07:21,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:07:21,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 22:07:21,743 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:07:21,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:07:21,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1421654202, now seen corresponding path program 1 times [2021-12-06 22:07:21,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:07:21,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236625076] [2021-12-06 22:07:21,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:07:21,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:07:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:21,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:07:21,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:07:21,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236625076] [2021-12-06 22:07:21,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236625076] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:07:21,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:07:21,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 22:07:21,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645815988] [2021-12-06 22:07:21,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:07:21,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 22:07:21,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:07:21,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 22:07:21,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:07:21,991 INFO L87 Difference]: Start difference. First operand 5068 states and 6965 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:28,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:07:28,238 INFO L93 Difference]: Finished difference Result 27397 states and 39092 transitions. [2021-12-06 22:07:28,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 22:07:28,239 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-12-06 22:07:28,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:07:28,262 INFO L225 Difference]: With dead ends: 27397 [2021-12-06 22:07:28,262 INFO L226 Difference]: Without dead ends: 24286 [2021-12-06 22:07:28,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2021-12-06 22:07:28,270 INFO L933 BasicCegarLoop]: 878 mSDtfsCounter, 4194 mSDsluCounter, 4463 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4194 SdHoareTripleChecker+Valid, 5341 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:07:28,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4194 Valid, 5341 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:07:28,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24286 states. [2021-12-06 22:07:29,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24286 to 4983. [2021-12-06 22:07:29,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4983 states, 4982 states have (on average 1.372340425531915) internal successors, (6837), 4982 states have internal predecessors, (6837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:29,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4983 states to 4983 states and 6837 transitions. [2021-12-06 22:07:29,336 INFO L78 Accepts]: Start accepts. Automaton has 4983 states and 6837 transitions. Word has length 71 [2021-12-06 22:07:29,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:07:29,337 INFO L470 AbstractCegarLoop]: Abstraction has 4983 states and 6837 transitions. [2021-12-06 22:07:29,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:29,337 INFO L276 IsEmpty]: Start isEmpty. Operand 4983 states and 6837 transitions. [2021-12-06 22:07:29,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-06 22:07:29,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:07:29,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:07:29,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 22:07:29,340 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:07:29,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:07:29,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1130829185, now seen corresponding path program 1 times [2021-12-06 22:07:29,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:07:29,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129636553] [2021-12-06 22:07:29,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:07:29,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:07:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:29,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:07:29,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:07:29,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129636553] [2021-12-06 22:07:29,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129636553] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:07:29,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:07:29,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:07:29,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945642351] [2021-12-06 22:07:29,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:07:29,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:07:29,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:07:29,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:07:29,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:07:29,393 INFO L87 Difference]: Start difference. First operand 4983 states and 6837 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:34,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:07:34,757 INFO L93 Difference]: Finished difference Result 21166 states and 30003 transitions. [2021-12-06 22:07:34,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:07:34,758 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-12-06 22:07:34,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:07:34,775 INFO L225 Difference]: With dead ends: 21166 [2021-12-06 22:07:34,775 INFO L226 Difference]: Without dead ends: 19084 [2021-12-06 22:07:34,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:07:34,779 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 2876 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2876 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:07:34,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2876 Valid, 1050 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 22:07:34,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19084 states. [2021-12-06 22:07:35,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19084 to 5013. [2021-12-06 22:07:35,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5013 states, 5012 states have (on average 1.3721069433359936) internal successors, (6877), 5012 states have internal predecessors, (6877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:35,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 6877 transitions. [2021-12-06 22:07:35,863 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 6877 transitions. Word has length 71 [2021-12-06 22:07:35,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:07:35,863 INFO L470 AbstractCegarLoop]: Abstraction has 5013 states and 6877 transitions. [2021-12-06 22:07:35,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:35,863 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 6877 transitions. [2021-12-06 22:07:35,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-06 22:07:35,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:07:35,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:07:35,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 22:07:35,867 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:07:35,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:07:35,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1491852773, now seen corresponding path program 1 times [2021-12-06 22:07:35,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:07:35,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649394115] [2021-12-06 22:07:35,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:07:35,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:07:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:07:35,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:07:35,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649394115] [2021-12-06 22:07:35,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649394115] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:07:35,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:07:35,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:07:35,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339754465] [2021-12-06 22:07:35,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:07:35,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:07:35,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:07:35,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:07:35,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:07:35,983 INFO L87 Difference]: Start difference. First operand 5013 states and 6877 transitions. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:41,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:07:41,644 INFO L93 Difference]: Finished difference Result 21393 states and 30303 transitions. [2021-12-06 22:07:41,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 22:07:41,645 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-12-06 22:07:41,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:07:41,661 INFO L225 Difference]: With dead ends: 21393 [2021-12-06 22:07:41,661 INFO L226 Difference]: Without dead ends: 18105 [2021-12-06 22:07:41,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-12-06 22:07:41,666 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 3268 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3268 SdHoareTripleChecker+Valid, 2804 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:07:41,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3268 Valid, 2804 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1785 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 22:07:41,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18105 states. [2021-12-06 22:07:42,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18105 to 4876. [2021-12-06 22:07:42,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4876 states, 4875 states have (on average 1.3721025641025641) internal successors, (6689), 4875 states have internal predecessors, (6689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:42,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4876 states to 4876 states and 6689 transitions. [2021-12-06 22:07:42,787 INFO L78 Accepts]: Start accepts. Automaton has 4876 states and 6689 transitions. Word has length 71 [2021-12-06 22:07:42,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:07:42,787 INFO L470 AbstractCegarLoop]: Abstraction has 4876 states and 6689 transitions. [2021-12-06 22:07:42,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:42,787 INFO L276 IsEmpty]: Start isEmpty. Operand 4876 states and 6689 transitions. [2021-12-06 22:07:42,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-06 22:07:42,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:07:42,791 INFO L514 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] [2021-12-06 22:07:42,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 22:07:42,791 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:07:42,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:07:42,791 INFO L85 PathProgramCache]: Analyzing trace with hash -697354618, now seen corresponding path program 1 times [2021-12-06 22:07:42,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:07:42,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354436873] [2021-12-06 22:07:42,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:07:42,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:07:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:07:42,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:07:42,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354436873] [2021-12-06 22:07:42,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354436873] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:07:42,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:07:42,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 22:07:42,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864402453] [2021-12-06 22:07:42,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:07:42,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:07:42,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:07:42,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:07:42,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:07:42,985 INFO L87 Difference]: Start difference. First operand 4876 states and 6689 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:55,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:07:55,069 INFO L93 Difference]: Finished difference Result 38922 states and 55764 transitions. [2021-12-06 22:07:55,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 22:07:55,069 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-12-06 22:07:55,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:07:55,105 INFO L225 Difference]: With dead ends: 38922 [2021-12-06 22:07:55,105 INFO L226 Difference]: Without dead ends: 35892 [2021-12-06 22:07:55,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=301, Invalid=1031, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 22:07:55,114 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 4621 mSDsluCounter, 5409 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4621 SdHoareTripleChecker+Valid, 6058 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:07:55,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4621 Valid, 6058 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 22:07:55,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35892 states. [2021-12-06 22:07:56,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35892 to 4884. [2021-12-06 22:07:56,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4884 states, 4883 states have (on average 1.3723121032152366) internal successors, (6701), 4883 states have internal predecessors, (6701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:56,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4884 states to 4884 states and 6701 transitions. [2021-12-06 22:07:56,447 INFO L78 Accepts]: Start accepts. Automaton has 4884 states and 6701 transitions. Word has length 72 [2021-12-06 22:07:56,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:07:56,447 INFO L470 AbstractCegarLoop]: Abstraction has 4884 states and 6701 transitions. [2021-12-06 22:07:56,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:56,448 INFO L276 IsEmpty]: Start isEmpty. Operand 4884 states and 6701 transitions. [2021-12-06 22:07:56,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-06 22:07:56,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:07:56,451 INFO L514 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] [2021-12-06 22:07:56,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 22:07:56,451 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:07:56,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:07:56,452 INFO L85 PathProgramCache]: Analyzing trace with hash -967274292, now seen corresponding path program 1 times [2021-12-06 22:07:56,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:07:56,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294366497] [2021-12-06 22:07:56,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:07:56,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:07:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:56,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:07:56,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:07:56,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294366497] [2021-12-06 22:07:56,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294366497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:07:56,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:07:56,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:07:56,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122498715] [2021-12-06 22:07:56,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:07:56,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:07:56,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:07:56,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:07:56,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:07:56,479 INFO L87 Difference]: Start difference. First operand 4884 states and 6701 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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) [2021-12-06 22:07:57,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:07:57,653 INFO L93 Difference]: Finished difference Result 7257 states and 10055 transitions. [2021-12-06 22:07:57,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:07:57,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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 [2021-12-06 22:07:57,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:07:57,657 INFO L225 Difference]: With dead ends: 7257 [2021-12-06 22:07:57,657 INFO L226 Difference]: Without dead ends: 4886 [2021-12-06 22:07:57,659 INFO L932 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 [2021-12-06 22:07:57,659 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 328 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:07:57,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 1226 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:07:57,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4886 states. [2021-12-06 22:07:58,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4886 to 4884. [2021-12-06 22:07:58,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4884 states, 4883 states have (on average 1.3614581200081917) internal successors, (6648), 4883 states have internal predecessors, (6648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:07:58,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4884 states to 4884 states and 6648 transitions. [2021-12-06 22:07:58,822 INFO L78 Accepts]: Start accepts. Automaton has 4884 states and 6648 transitions. Word has length 73 [2021-12-06 22:07:58,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:07:58,822 INFO L470 AbstractCegarLoop]: Abstraction has 4884 states and 6648 transitions. [2021-12-06 22:07:58,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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) [2021-12-06 22:07:58,822 INFO L276 IsEmpty]: Start isEmpty. Operand 4884 states and 6648 transitions. [2021-12-06 22:07:58,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 22:07:58,826 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:07:58,826 INFO L514 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] [2021-12-06 22:07:58,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 22:07:58,826 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:07:58,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:07:58,827 INFO L85 PathProgramCache]: Analyzing trace with hash -700390589, now seen corresponding path program 1 times [2021-12-06 22:07:58,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:07:58,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946227440] [2021-12-06 22:07:58,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:07:58,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:07:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:07:58,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:07:58,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946227440] [2021-12-06 22:07:58,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946227440] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:07:58,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:07:58,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:07:58,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450315502] [2021-12-06 22:07:58,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:07:58,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:07:58,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:07:58,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:07:58,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:07:58,870 INFO L87 Difference]: Start difference. First operand 4884 states and 6648 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:08:00,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:00,778 INFO L93 Difference]: Finished difference Result 9617 states and 13272 transitions. [2021-12-06 22:08:00,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:08:00,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-12-06 22:08:00,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:00,786 INFO L225 Difference]: With dead ends: 9617 [2021-12-06 22:08:00,786 INFO L226 Difference]: Without dead ends: 6869 [2021-12-06 22:08:00,788 INFO L932 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 [2021-12-06 22:08:00,789 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 401 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:00,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 576 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:08:00,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6869 states. [2021-12-06 22:08:02,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6869 to 6849. [2021-12-06 22:08:02,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6849 states, 6848 states have (on average 1.3828855140186915) internal successors, (9470), 6848 states have internal predecessors, (9470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:08:02,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6849 states to 6849 states and 9470 transitions. [2021-12-06 22:08:02,648 INFO L78 Accepts]: Start accepts. Automaton has 6849 states and 9470 transitions. Word has length 74 [2021-12-06 22:08:02,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:02,648 INFO L470 AbstractCegarLoop]: Abstraction has 6849 states and 9470 transitions. [2021-12-06 22:08:02,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:08:02,649 INFO L276 IsEmpty]: Start isEmpty. Operand 6849 states and 9470 transitions. [2021-12-06 22:08:02,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 22:08:02,653 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:02,653 INFO L514 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] [2021-12-06 22:08:02,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 22:08:02,653 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:08:02,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:02,653 INFO L85 PathProgramCache]: Analyzing trace with hash -976483284, now seen corresponding path program 1 times [2021-12-06 22:08:02,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:08:02,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958792447] [2021-12-06 22:08:02,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:02,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:08:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:02,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:02,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:08:02,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958792447] [2021-12-06 22:08:02,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958792447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:02,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:02,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:08:02,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114724983] [2021-12-06 22:08:02,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:02,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:08:02,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:08:02,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:08:02,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:08:02,675 INFO L87 Difference]: Start difference. First operand 6849 states and 9470 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:08:05,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:05,069 INFO L93 Difference]: Finished difference Result 12668 states and 17661 transitions. [2021-12-06 22:08:05,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:08:05,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-12-06 22:08:05,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:05,077 INFO L225 Difference]: With dead ends: 12668 [2021-12-06 22:08:05,077 INFO L226 Difference]: Without dead ends: 8446 [2021-12-06 22:08:05,081 INFO L932 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 [2021-12-06 22:08:05,082 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 399 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:05,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 670 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:08:05,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8446 states. [2021-12-06 22:08:06,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8446 to 6282. [2021-12-06 22:08:06,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6282 states, 6281 states have (on average 1.3900652762298997) internal successors, (8731), 6281 states have internal predecessors, (8731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:08:06,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6282 states to 6282 states and 8731 transitions. [2021-12-06 22:08:06,863 INFO L78 Accepts]: Start accepts. Automaton has 6282 states and 8731 transitions. Word has length 74 [2021-12-06 22:08:06,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:06,863 INFO L470 AbstractCegarLoop]: Abstraction has 6282 states and 8731 transitions. [2021-12-06 22:08:06,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:08:06,863 INFO L276 IsEmpty]: Start isEmpty. Operand 6282 states and 8731 transitions. [2021-12-06 22:08:06,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-06 22:08:06,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:06,867 INFO L514 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] [2021-12-06 22:08:06,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 22:08:06,867 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:08:06,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:06,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1077680046, now seen corresponding path program 1 times [2021-12-06 22:08:06,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:08:06,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471518733] [2021-12-06 22:08:06,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:06,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:08:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:06,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:08:06,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471518733] [2021-12-06 22:08:06,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471518733] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:06,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:06,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:08:06,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369142082] [2021-12-06 22:08:06,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:06,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:08:06,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:08:06,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:08:06,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:08:06,943 INFO L87 Difference]: Start difference. First operand 6282 states and 8731 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 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) [2021-12-06 22:08:09,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:09,909 INFO L93 Difference]: Finished difference Result 9836 states and 13771 transitions. [2021-12-06 22:08:09,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:08:09,910 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 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 [2021-12-06 22:08:09,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:09,917 INFO L225 Difference]: With dead ends: 9836 [2021-12-06 22:08:09,917 INFO L226 Difference]: Without dead ends: 8144 [2021-12-06 22:08:09,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-06 22:08:09,920 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 2502 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2502 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:09,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2502 Valid, 1393 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:08:09,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8144 states. [2021-12-06 22:08:11,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8144 to 6280. [2021-12-06 22:08:11,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6280 states, 6279 states have (on average 1.3898709985666506) internal successors, (8727), 6279 states have internal predecessors, (8727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:08:11,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6280 states to 6280 states and 8727 transitions. [2021-12-06 22:08:11,693 INFO L78 Accepts]: Start accepts. Automaton has 6280 states and 8727 transitions. Word has length 75 [2021-12-06 22:08:11,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:11,693 INFO L470 AbstractCegarLoop]: Abstraction has 6280 states and 8727 transitions. [2021-12-06 22:08:11,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 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) [2021-12-06 22:08:11,694 INFO L276 IsEmpty]: Start isEmpty. Operand 6280 states and 8727 transitions. [2021-12-06 22:08:11,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-06 22:08:11,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:11,697 INFO L514 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] [2021-12-06 22:08:11,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 22:08:11,698 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:08:11,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:11,698 INFO L85 PathProgramCache]: Analyzing trace with hash -2139551739, now seen corresponding path program 1 times [2021-12-06 22:08:11,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:08:11,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935545770] [2021-12-06 22:08:11,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:11,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:08:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:11,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:08:11,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935545770] [2021-12-06 22:08:11,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935545770] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:11,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:11,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:08:11,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425286597] [2021-12-06 22:08:11,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:11,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:08:11,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:08:11,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:08:11,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:08:11,725 INFO L87 Difference]: Start difference. First operand 6280 states and 8727 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) [2021-12-06 22:08:13,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:13,502 INFO L93 Difference]: Finished difference Result 9604 states and 13429 transitions. [2021-12-06 22:08:13,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:08:13,503 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 [2021-12-06 22:08:13,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:13,508 INFO L225 Difference]: With dead ends: 9604 [2021-12-06 22:08:13,508 INFO L226 Difference]: Without dead ends: 6282 [2021-12-06 22:08:13,512 INFO L932 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 [2021-12-06 22:08:13,512 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 243 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:13,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 938 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:08:13,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2021-12-06 22:08:15,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 6280. [2021-12-06 22:08:15,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6280 states, 6279 states have (on average 1.375218983914636) internal successors, (8635), 6279 states have internal predecessors, (8635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:08:15,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6280 states to 6280 states and 8635 transitions. [2021-12-06 22:08:15,273 INFO L78 Accepts]: Start accepts. Automaton has 6280 states and 8635 transitions. Word has length 76 [2021-12-06 22:08:15,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:15,273 INFO L470 AbstractCegarLoop]: Abstraction has 6280 states and 8635 transitions. [2021-12-06 22:08:15,273 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) [2021-12-06 22:08:15,273 INFO L276 IsEmpty]: Start isEmpty. Operand 6280 states and 8635 transitions. [2021-12-06 22:08:15,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 22:08:15,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:15,276 INFO L514 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] [2021-12-06 22:08:15,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 22:08:15,276 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:08:15,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:15,277 INFO L85 PathProgramCache]: Analyzing trace with hash 895278353, now seen corresponding path program 1 times [2021-12-06 22:08:15,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:08:15,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264628446] [2021-12-06 22:08:15,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:15,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:08:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:15,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:08:15,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264628446] [2021-12-06 22:08:15,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264628446] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:15,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:15,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:08:15,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47218938] [2021-12-06 22:08:15,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:15,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:08:15,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:08:15,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:08:15,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:08:15,299 INFO L87 Difference]: Start difference. First operand 6280 states and 8635 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) [2021-12-06 22:08:17,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:17,576 INFO L93 Difference]: Finished difference Result 11588 states and 16058 transitions. [2021-12-06 22:08:17,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:08:17,576 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 [2021-12-06 22:08:17,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:17,582 INFO L225 Difference]: With dead ends: 11588 [2021-12-06 22:08:17,582 INFO L226 Difference]: Without dead ends: 7762 [2021-12-06 22:08:17,585 INFO L932 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 [2021-12-06 22:08:17,586 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 353 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:17,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 513 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:08:17,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7762 states. [2021-12-06 22:08:19,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7762 to 5946. [2021-12-06 22:08:19,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5946 states, 5945 states have (on average 1.3793103448275863) internal successors, (8200), 5945 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:08:19,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5946 states to 5946 states and 8200 transitions. [2021-12-06 22:08:19,280 INFO L78 Accepts]: Start accepts. Automaton has 5946 states and 8200 transitions. Word has length 77 [2021-12-06 22:08:19,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:19,281 INFO L470 AbstractCegarLoop]: Abstraction has 5946 states and 8200 transitions. [2021-12-06 22:08:19,281 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) [2021-12-06 22:08:19,281 INFO L276 IsEmpty]: Start isEmpty. Operand 5946 states and 8200 transitions. [2021-12-06 22:08:19,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 22:08:19,283 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:19,283 INFO L514 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] [2021-12-06 22:08:19,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 22:08:19,283 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:08:19,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:19,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1668712, now seen corresponding path program 1 times [2021-12-06 22:08:19,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:08:19,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986422200] [2021-12-06 22:08:19,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:19,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:08:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:19,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:19,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:08:19,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986422200] [2021-12-06 22:08:19,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986422200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:19,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:19,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 22:08:19,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597867994] [2021-12-06 22:08:19,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:19,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 22:08:19,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:08:19,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 22:08:19,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:08:19,500 INFO L87 Difference]: Start difference. First operand 5946 states and 8200 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 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) [2021-12-06 22:08:27,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:27,844 INFO L93 Difference]: Finished difference Result 22104 states and 30887 transitions. [2021-12-06 22:08:27,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 22:08:27,845 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 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 [2021-12-06 22:08:27,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:27,865 INFO L225 Difference]: With dead ends: 22104 [2021-12-06 22:08:27,865 INFO L226 Difference]: Without dead ends: 21475 [2021-12-06 22:08:27,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=253, Invalid=677, Unknown=0, NotChecked=0, Total=930 [2021-12-06 22:08:27,869 INFO L933 BasicCegarLoop]: 606 mSDtfsCounter, 3768 mSDsluCounter, 3442 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3768 SdHoareTripleChecker+Valid, 4048 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:27,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3768 Valid, 4048 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 22:08:27,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21475 states. [2021-12-06 22:08:29,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21475 to 5897. [2021-12-06 22:08:29,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5897 states, 5896 states have (on average 1.3800881953867028) internal successors, (8137), 5896 states have internal predecessors, (8137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:08:29,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5897 states to 5897 states and 8137 transitions. [2021-12-06 22:08:29,784 INFO L78 Accepts]: Start accepts. Automaton has 5897 states and 8137 transitions. Word has length 78 [2021-12-06 22:08:29,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:29,785 INFO L470 AbstractCegarLoop]: Abstraction has 5897 states and 8137 transitions. [2021-12-06 22:08:29,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 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) [2021-12-06 22:08:29,785 INFO L276 IsEmpty]: Start isEmpty. Operand 5897 states and 8137 transitions. [2021-12-06 22:08:29,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-06 22:08:29,787 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:29,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:29,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 22:08:29,788 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:08:29,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:29,788 INFO L85 PathProgramCache]: Analyzing trace with hash -961989651, now seen corresponding path program 1 times [2021-12-06 22:08:29,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:08:29,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537399999] [2021-12-06 22:08:29,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:29,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:08:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:29,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:29,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:08:29,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537399999] [2021-12-06 22:08:29,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537399999] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:29,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:29,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:08:29,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434199441] [2021-12-06 22:08:29,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:29,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:08:29,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:08:29,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:08:29,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:08:29,823 INFO L87 Difference]: Start difference. First operand 5897 states and 8137 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:08:36,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:36,382 INFO L93 Difference]: Finished difference Result 23383 states and 33103 transitions. [2021-12-06 22:08:36,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:08:36,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-12-06 22:08:36,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:36,399 INFO L225 Difference]: With dead ends: 23383 [2021-12-06 22:08:36,399 INFO L226 Difference]: Without dead ends: 18653 [2021-12-06 22:08:36,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:08:36,404 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 1751 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:36,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1751 Valid, 1223 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:08:36,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18653 states. [2021-12-06 22:08:40,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18653 to 10625. [2021-12-06 22:08:40,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10625 states, 10624 states have (on average 1.3846009036144578) internal successors, (14710), 10624 states have internal predecessors, (14710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:08:40,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10625 states to 10625 states and 14710 transitions. [2021-12-06 22:08:40,089 INFO L78 Accepts]: Start accepts. Automaton has 10625 states and 14710 transitions. Word has length 82 [2021-12-06 22:08:40,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:40,090 INFO L470 AbstractCegarLoop]: Abstraction has 10625 states and 14710 transitions. [2021-12-06 22:08:40,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:08:40,090 INFO L276 IsEmpty]: Start isEmpty. Operand 10625 states and 14710 transitions. [2021-12-06 22:08:40,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-06 22:08:40,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:40,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:40,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-06 22:08:40,094 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:08:40,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:40,094 INFO L85 PathProgramCache]: Analyzing trace with hash -445916950, now seen corresponding path program 1 times [2021-12-06 22:08:40,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:08:40,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172430206] [2021-12-06 22:08:40,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:40,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:08:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:40,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:08:40,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172430206] [2021-12-06 22:08:40,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172430206] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:40,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:40,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:08:40,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18474258] [2021-12-06 22:08:40,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:40,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:08:40,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:08:40,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:08:40,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:08:40,138 INFO L87 Difference]: Start difference. First operand 10625 states and 14710 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:08:44,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:44,800 INFO L93 Difference]: Finished difference Result 17053 states and 23606 transitions. [2021-12-06 22:08:44,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:08:44,801 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-12-06 22:08:44,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:44,812 INFO L225 Difference]: With dead ends: 17053 [2021-12-06 22:08:44,812 INFO L226 Difference]: Without dead ends: 13240 [2021-12-06 22:08:44,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:08:44,816 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 798 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:44,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [798 Valid, 1234 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:08:44,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13240 states. [2021-12-06 22:08:49,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13240 to 11578. [2021-12-06 22:08:49,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 11577 states have (on average 1.3801502980046645) internal successors, (15978), 11577 states have internal predecessors, (15978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:08:49,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 15978 transitions. [2021-12-06 22:08:49,238 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 15978 transitions. Word has length 83 [2021-12-06 22:08:49,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:49,239 INFO L470 AbstractCegarLoop]: Abstraction has 11578 states and 15978 transitions. [2021-12-06 22:08:49,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:08:49,239 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 15978 transitions. [2021-12-06 22:08:49,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-06 22:08:49,244 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:49,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:49,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-06 22:08:49,244 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:08:49,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:49,244 INFO L85 PathProgramCache]: Analyzing trace with hash -432865228, now seen corresponding path program 1 times [2021-12-06 22:08:49,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:08:49,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424618981] [2021-12-06 22:08:49,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:49,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:08:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:49,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:49,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:08:49,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424618981] [2021-12-06 22:08:49,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424618981] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:49,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:49,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:08:49,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464813152] [2021-12-06 22:08:49,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:49,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:08:49,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:08:49,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:08:49,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:08:49,271 INFO L87 Difference]: Start difference. First operand 11578 states and 15978 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:08:57,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:57,297 INFO L93 Difference]: Finished difference Result 31142 states and 43372 transitions. [2021-12-06 22:08:57,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:08:57,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-12-06 22:08:57,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:57,318 INFO L225 Difference]: With dead ends: 31142 [2021-12-06 22:08:57,318 INFO L226 Difference]: Without dead ends: 20752 [2021-12-06 22:08:57,326 INFO L932 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 [2021-12-06 22:08:57,326 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 158 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:57,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 772 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:08:57,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20752 states. [2021-12-06 22:09:04,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20752 to 19254. [2021-12-06 22:09:04,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19254 states, 19253 states have (on average 1.3858619435932062) internal successors, (26682), 19253 states have internal predecessors, (26682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:09:04,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19254 states to 19254 states and 26682 transitions. [2021-12-06 22:09:04,786 INFO L78 Accepts]: Start accepts. Automaton has 19254 states and 26682 transitions. Word has length 84 [2021-12-06 22:09:04,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:09:04,786 INFO L470 AbstractCegarLoop]: Abstraction has 19254 states and 26682 transitions. [2021-12-06 22:09:04,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:09:04,786 INFO L276 IsEmpty]: Start isEmpty. Operand 19254 states and 26682 transitions. [2021-12-06 22:09:04,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-06 22:09:04,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:09:04,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:09:04,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-06 22:09:04,791 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:09:04,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:09:04,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1208093171, now seen corresponding path program 1 times [2021-12-06 22:09:04,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:09:04,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270683357] [2021-12-06 22:09:04,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:09:04,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:09:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:04,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:09:04,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:09:04,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270683357] [2021-12-06 22:09:04,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270683357] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:09:04,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:09:04,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:09:04,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223097374] [2021-12-06 22:09:04,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:09:04,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:09:04,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:09:04,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:09:04,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:09:04,818 INFO L87 Difference]: Start difference. First operand 19254 states and 26682 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:09:19,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:09:19,120 INFO L93 Difference]: Finished difference Result 53578 states and 74404 transitions. [2021-12-06 22:09:19,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:09:19,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-12-06 22:09:19,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:09:19,165 INFO L225 Difference]: With dead ends: 53578 [2021-12-06 22:09:19,165 INFO L226 Difference]: Without dead ends: 35512 [2021-12-06 22:09:19,182 INFO L932 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 [2021-12-06 22:09:19,183 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 136 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:09:19,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 766 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:09:19,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35512 states. [2021-12-06 22:09:32,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35512 to 32558. [2021-12-06 22:09:32,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32558 states, 32557 states have (on average 1.37782965260927) internal successors, (44858), 32557 states have internal predecessors, (44858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:09:32,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32558 states to 32558 states and 44858 transitions. [2021-12-06 22:09:32,314 INFO L78 Accepts]: Start accepts. Automaton has 32558 states and 44858 transitions. Word has length 85 [2021-12-06 22:09:32,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:09:32,314 INFO L470 AbstractCegarLoop]: Abstraction has 32558 states and 44858 transitions. [2021-12-06 22:09:32,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:09:32,315 INFO L276 IsEmpty]: Start isEmpty. Operand 32558 states and 44858 transitions. [2021-12-06 22:09:32,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-06 22:09:32,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:09:32,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:09:32,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-06 22:09:32,319 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:09:32,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:09:32,319 INFO L85 PathProgramCache]: Analyzing trace with hash 537323150, now seen corresponding path program 1 times [2021-12-06 22:09:32,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:09:32,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887563945] [2021-12-06 22:09:32,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:09:32,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:09:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:32,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:09:32,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:09:32,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887563945] [2021-12-06 22:09:32,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887563945] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:09:32,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:09:32,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:09:32,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227811640] [2021-12-06 22:09:32,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:09:32,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:09:32,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:09:32,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:09:32,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:09:32,345 INFO L87 Difference]: Start difference. First operand 32558 states and 44858 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:09:42,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:09:42,232 INFO L93 Difference]: Finished difference Result 38031 states and 52307 transitions. [2021-12-06 22:09:42,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:09:42,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-12-06 22:09:42,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:09:42,260 INFO L225 Difference]: With dead ends: 38031 [2021-12-06 22:09:42,260 INFO L226 Difference]: Without dead ends: 26132 [2021-12-06 22:09:42,270 INFO L932 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 [2021-12-06 22:09:42,271 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 225 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:09:42,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 819 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:09:42,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26132 states. [2021-12-06 22:09:49,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26132 to 19666. [2021-12-06 22:09:49,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19666 states, 19665 states have (on average 1.3676582761250953) internal successors, (26895), 19665 states have internal predecessors, (26895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:09:49,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19666 states to 19666 states and 26895 transitions. [2021-12-06 22:09:49,809 INFO L78 Accepts]: Start accepts. Automaton has 19666 states and 26895 transitions. Word has length 86 [2021-12-06 22:09:49,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:09:49,810 INFO L470 AbstractCegarLoop]: Abstraction has 19666 states and 26895 transitions. [2021-12-06 22:09:49,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:09:49,810 INFO L276 IsEmpty]: Start isEmpty. Operand 19666 states and 26895 transitions. [2021-12-06 22:09:49,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-06 22:09:49,813 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:09:49,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:09:49,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-06 22:09:49,813 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:09:49,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:09:49,813 INFO L85 PathProgramCache]: Analyzing trace with hash -443971689, now seen corresponding path program 1 times [2021-12-06 22:09:49,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:09:49,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918855026] [2021-12-06 22:09:49,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:09:49,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:09:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:09:49,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:09:49,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918855026] [2021-12-06 22:09:49,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918855026] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:09:49,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:09:49,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:09:49,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998109134] [2021-12-06 22:09:49,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:09:49,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:09:49,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:09:49,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:09:49,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:09:49,838 INFO L87 Difference]: Start difference. First operand 19666 states and 26895 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:09:56,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:09:56,470 INFO L93 Difference]: Finished difference Result 26235 states and 35706 transitions. [2021-12-06 22:09:56,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:09:56,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-12-06 22:09:56,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:09:56,487 INFO L225 Difference]: With dead ends: 26235 [2021-12-06 22:09:56,488 INFO L226 Difference]: Without dead ends: 17309 [2021-12-06 22:09:56,494 INFO L932 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 [2021-12-06 22:09:56,494 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 255 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:09:56,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 813 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:09:56,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17309 states. [2021-12-06 22:10:02,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17309 to 17307. [2021-12-06 22:10:02,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17307 states, 17306 states have (on average 1.3485496359644054) internal successors, (23338), 17306 states have internal predecessors, (23338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:10:02,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17307 states to 17307 states and 23338 transitions. [2021-12-06 22:10:02,901 INFO L78 Accepts]: Start accepts. Automaton has 17307 states and 23338 transitions. Word has length 88 [2021-12-06 22:10:02,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:02,902 INFO L470 AbstractCegarLoop]: Abstraction has 17307 states and 23338 transitions. [2021-12-06 22:10:02,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:10:02,902 INFO L276 IsEmpty]: Start isEmpty. Operand 17307 states and 23338 transitions. [2021-12-06 22:10:02,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-06 22:10:02,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:02,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:02,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-06 22:10:02,905 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:10:02,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:02,905 INFO L85 PathProgramCache]: Analyzing trace with hash -628710573, now seen corresponding path program 1 times [2021-12-06 22:10:02,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:02,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445841807] [2021-12-06 22:10:02,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:02,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:02,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:02,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445841807] [2021-12-06 22:10:02,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445841807] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:02,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:02,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:10:02,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663078278] [2021-12-06 22:10:02,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:02,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:10:02,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:02,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:10:02,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:10:02,932 INFO L87 Difference]: Start difference. First operand 17307 states and 23338 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:10:15,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:15,279 INFO L93 Difference]: Finished difference Result 48607 states and 65708 transitions. [2021-12-06 22:10:15,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:10:15,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-12-06 22:10:15,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:15,316 INFO L225 Difference]: With dead ends: 48607 [2021-12-06 22:10:15,316 INFO L226 Difference]: Without dead ends: 32317 [2021-12-06 22:10:15,328 INFO L932 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 [2021-12-06 22:10:15,328 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 103 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:15,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 763 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:10:15,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32317 states. [2021-12-06 22:10:26,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32317 to 30331. [2021-12-06 22:10:26,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30331 states, 30330 states have (on average 1.3426310583580614) internal successors, (40722), 30330 states have internal predecessors, (40722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:10:26,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30331 states to 30331 states and 40722 transitions. [2021-12-06 22:10:26,946 INFO L78 Accepts]: Start accepts. Automaton has 30331 states and 40722 transitions. Word has length 88 [2021-12-06 22:10:26,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:26,946 INFO L470 AbstractCegarLoop]: Abstraction has 30331 states and 40722 transitions. [2021-12-06 22:10:26,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:10:26,946 INFO L276 IsEmpty]: Start isEmpty. Operand 30331 states and 40722 transitions. [2021-12-06 22:10:26,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-06 22:10:26,949 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:26,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:26,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-06 22:10:26,950 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:10:26,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:26,950 INFO L85 PathProgramCache]: Analyzing trace with hash 220241393, now seen corresponding path program 1 times [2021-12-06 22:10:26,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:26,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211449803] [2021-12-06 22:10:26,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:26,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:26,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:26,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:26,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211449803] [2021-12-06 22:10:26,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211449803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:26,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:26,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:10:26,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815600706] [2021-12-06 22:10:26,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:26,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:10:26,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:26,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:10:26,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:10:26,991 INFO L87 Difference]: Start difference. First operand 30331 states and 40722 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:10:54,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:54,123 INFO L93 Difference]: Finished difference Result 65897 states and 87317 transitions. [2021-12-06 22:10:54,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:10:54,124 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-12-06 22:10:54,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:54,204 INFO L225 Difference]: With dead ends: 65897 [2021-12-06 22:10:54,204 INFO L226 Difference]: Without dead ends: 65895 [2021-12-06 22:10:54,216 INFO L932 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 [2021-12-06 22:10:54,217 INFO L933 BasicCegarLoop]: 475 mSDtfsCounter, 450 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:54,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 1991 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:10:54,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65895 states. [2021-12-06 22:11:07,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65895 to 32539. [2021-12-06 22:11:07,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32539 states, 32538 states have (on average 1.3193804167435) internal successors, (42930), 32538 states have internal predecessors, (42930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:11:07,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32539 states to 32539 states and 42930 transitions. [2021-12-06 22:11:07,770 INFO L78 Accepts]: Start accepts. Automaton has 32539 states and 42930 transitions. Word has length 89 [2021-12-06 22:11:07,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:11:07,770 INFO L470 AbstractCegarLoop]: Abstraction has 32539 states and 42930 transitions. [2021-12-06 22:11:07,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:11:07,770 INFO L276 IsEmpty]: Start isEmpty. Operand 32539 states and 42930 transitions. [2021-12-06 22:11:07,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-06 22:11:07,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:11:07,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:11:07,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-06 22:11:07,774 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:11:07,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:11:07,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1346005613, now seen corresponding path program 1 times [2021-12-06 22:11:07,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:11:07,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299076025] [2021-12-06 22:11:07,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:11:07,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:11:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:07,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:11:07,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:11:07,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299076025] [2021-12-06 22:11:07,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299076025] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:11:07,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:11:07,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:11:07,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980072855] [2021-12-06 22:11:07,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:11:07,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:11:07,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:11:07,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:11:07,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:11:07,801 INFO L87 Difference]: Start difference. First operand 32539 states and 42930 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:11:32,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:11:32,392 INFO L93 Difference]: Finished difference Result 89567 states and 118068 transitions. [2021-12-06 22:11:32,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:11:32,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-12-06 22:11:32,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:11:32,466 INFO L225 Difference]: With dead ends: 89567 [2021-12-06 22:11:32,466 INFO L226 Difference]: Without dead ends: 58045 [2021-12-06 22:11:32,490 INFO L932 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 [2021-12-06 22:11:32,491 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 264 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:11:32,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 575 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:11:32,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58045 states. [2021-12-06 22:11:56,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58045 to 57307. [2021-12-06 22:11:56,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57307 states, 57306 states have (on average 1.2933026210169964) internal successors, (74114), 57306 states have internal predecessors, (74114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:11:56,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57307 states to 57307 states and 74114 transitions. [2021-12-06 22:11:56,414 INFO L78 Accepts]: Start accepts. Automaton has 57307 states and 74114 transitions. Word has length 90 [2021-12-06 22:11:56,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:11:56,415 INFO L470 AbstractCegarLoop]: Abstraction has 57307 states and 74114 transitions. [2021-12-06 22:11:56,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:11:56,415 INFO L276 IsEmpty]: Start isEmpty. Operand 57307 states and 74114 transitions. [2021-12-06 22:11:56,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-06 22:11:56,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:11:56,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:11:56,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-06 22:11:56,420 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:11:56,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:11:56,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1423635059, now seen corresponding path program 1 times [2021-12-06 22:11:56,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:11:56,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233208907] [2021-12-06 22:11:56,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:11:56,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:11:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:56,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:11:56,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:11:56,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233208907] [2021-12-06 22:11:56,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233208907] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:11:56,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:11:56,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:11:56,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414221402] [2021-12-06 22:11:56,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:11:56,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:11:56,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:11:56,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:11:56,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:11:56,449 INFO L87 Difference]: Start difference. First operand 57307 states and 74114 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:12:34,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:12:34,629 INFO L93 Difference]: Finished difference Result 146351 states and 188852 transitions. [2021-12-06 22:12:34,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:12:34,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-12-06 22:12:34,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:12:34,747 INFO L225 Difference]: With dead ends: 146351 [2021-12-06 22:12:34,748 INFO L226 Difference]: Without dead ends: 90061 [2021-12-06 22:12:34,784 INFO L932 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 [2021-12-06 22:12:34,785 INFO L933 BasicCegarLoop]: 487 mSDtfsCounter, 174 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:12:34,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 784 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:12:34,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90061 states. [2021-12-06 22:13:10,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90061 to 83659. [2021-12-06 22:13:10,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83659 states, 83658 states have (on average 1.281240287838581) internal successors, (107186), 83658 states have internal predecessors, (107186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:13:10,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83659 states to 83659 states and 107186 transitions. [2021-12-06 22:13:10,908 INFO L78 Accepts]: Start accepts. Automaton has 83659 states and 107186 transitions. Word has length 92 [2021-12-06 22:13:10,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:13:10,908 INFO L470 AbstractCegarLoop]: Abstraction has 83659 states and 107186 transitions. [2021-12-06 22:13:10,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:13:10,908 INFO L276 IsEmpty]: Start isEmpty. Operand 83659 states and 107186 transitions. [2021-12-06 22:13:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-06 22:13:10,911 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:13:10,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:13:10,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-06 22:13:10,911 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:13:10,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:13:10,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1114997113, now seen corresponding path program 1 times [2021-12-06 22:13:10,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:13:10,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582701140] [2021-12-06 22:13:10,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:13:10,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:13:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:10,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:13:10,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:13:10,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582701140] [2021-12-06 22:13:10,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582701140] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:13:10,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:13:10,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:13:10,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389047652] [2021-12-06 22:13:10,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:13:10,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:13:10,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:13:10,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:13:10,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:13:10,954 INFO L87 Difference]: Start difference. First operand 83659 states and 107186 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:02,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:14:02,157 INFO L93 Difference]: Finished difference Result 134437 states and 173255 transitions. [2021-12-06 22:14:02,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:14:02,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-12-06 22:14:02,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:14:02,326 INFO L225 Difference]: With dead ends: 134437 [2021-12-06 22:14:02,326 INFO L226 Difference]: Without dead ends: 117371 [2021-12-06 22:14:02,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:14:02,355 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 1365 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1365 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:14:02,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1365 Valid, 1357 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:14:02,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117371 states. [2021-12-06 22:14:44,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117371 to 96771. [2021-12-06 22:14:44,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96771 states, 96770 states have (on average 1.2794254417691433) internal successors, (123810), 96770 states have internal predecessors, (123810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:44,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96771 states to 96771 states and 123810 transitions. [2021-12-06 22:14:44,888 INFO L78 Accepts]: Start accepts. Automaton has 96771 states and 123810 transitions. Word has length 92 [2021-12-06 22:14:44,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:14:44,888 INFO L470 AbstractCegarLoop]: Abstraction has 96771 states and 123810 transitions. [2021-12-06 22:14:44,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:44,888 INFO L276 IsEmpty]: Start isEmpty. Operand 96771 states and 123810 transitions. [2021-12-06 22:14:44,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 22:14:44,891 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:14:44,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:14:44,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-06 22:14:44,892 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:14:44,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:14:44,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1269471423, now seen corresponding path program 1 times [2021-12-06 22:14:44,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:14:44,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549761856] [2021-12-06 22:14:44,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:14:44,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:14:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:44,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:14:44,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:14:44,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549761856] [2021-12-06 22:14:44,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549761856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:14:44,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:14:44,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:14:44,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999195736] [2021-12-06 22:14:44,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:14:44,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:14:44,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:14:44,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:14:44,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:14:44,934 INFO L87 Difference]: Start difference. First operand 96771 states and 123810 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:38,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:15:38,801 INFO L93 Difference]: Finished difference Result 139861 states and 179879 transitions. [2021-12-06 22:15:38,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:15:38,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-06 22:15:38,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:15:38,980 INFO L225 Difference]: With dead ends: 139861 [2021-12-06 22:15:38,980 INFO L226 Difference]: Without dead ends: 122795 [2021-12-06 22:15:39,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:15:39,009 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 1372 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:15:39,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1372 Valid, 1381 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:15:39,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122795 states. [2021-12-06 22:16:27,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122795 to 109883. [2021-12-06 22:16:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109883 states, 109882 states have (on average 1.2780437196265084) internal successors, (140434), 109882 states have internal predecessors, (140434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:16:27,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109883 states to 109883 states and 140434 transitions. [2021-12-06 22:16:27,931 INFO L78 Accepts]: Start accepts. Automaton has 109883 states and 140434 transitions. Word has length 93 [2021-12-06 22:16:27,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:16:27,931 INFO L470 AbstractCegarLoop]: Abstraction has 109883 states and 140434 transitions. [2021-12-06 22:16:27,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:16:27,931 INFO L276 IsEmpty]: Start isEmpty. Operand 109883 states and 140434 transitions. [2021-12-06 22:16:27,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-06 22:16:27,935 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:16:27,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:16:27,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-06 22:16:27,935 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:16:27,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:16:27,936 INFO L85 PathProgramCache]: Analyzing trace with hash 155805689, now seen corresponding path program 1 times [2021-12-06 22:16:27,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:16:27,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819695042] [2021-12-06 22:16:27,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:16:27,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:16:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:27,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:16:27,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:16:27,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819695042] [2021-12-06 22:16:27,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819695042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:16:27,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:16:27,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:16:27,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865192584] [2021-12-06 22:16:27,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:16:27,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:16:27,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:16:27,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:16:27,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:16:27,978 INFO L87 Difference]: Start difference. First operand 109883 states and 140434 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:17:29,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:29,193 INFO L93 Difference]: Finished difference Result 162805 states and 209303 transitions. [2021-12-06 22:17:29,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:17:29,193 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2021-12-06 22:17:29,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:29,394 INFO L225 Difference]: With dead ends: 162805 [2021-12-06 22:17:29,394 INFO L226 Difference]: Without dead ends: 136883 [2021-12-06 22:17:29,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:17:29,436 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 1421 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:29,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1421 Valid, 1285 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:17:29,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136883 states. [2021-12-06 22:18:27,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136883 to 127811. [2021-12-06 22:18:27,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127811 states, 127810 states have (on average 1.2762225177998592) internal successors, (163114), 127810 states have internal predecessors, (163114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:18:27,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127811 states to 127811 states and 163114 transitions. [2021-12-06 22:18:27,478 INFO L78 Accepts]: Start accepts. Automaton has 127811 states and 163114 transitions. Word has length 99 [2021-12-06 22:18:27,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:27,478 INFO L470 AbstractCegarLoop]: Abstraction has 127811 states and 163114 transitions. [2021-12-06 22:18:27,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:18:27,478 INFO L276 IsEmpty]: Start isEmpty. Operand 127811 states and 163114 transitions. [2021-12-06 22:18:27,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-06 22:18:27,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:27,493 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:18:27,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-06 22:18:27,493 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:27,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:27,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1580184904, now seen corresponding path program 1 times [2021-12-06 22:18:27,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:27,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072279130] [2021-12-06 22:18:27,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:27,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:27,529 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:18:27,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:27,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072279130] [2021-12-06 22:18:27,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072279130] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:18:27,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612096156] [2021-12-06 22:18:27,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:27,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:27,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:18:27,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:18:27,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e9cae5-6f4a-4f2b-b0df-4126a5630fa6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:18:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:27,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:18:27,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:18:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:18:27,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:18:28,084 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:18:28,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612096156] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:18:28,084 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:18:28,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2021-12-06 22:18:28,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243155779] [2021-12-06 22:18:28,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:18:28,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 22:18:28,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:18:28,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 22:18:28,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:18:28,086 INFO L87 Difference]: Start difference. First operand 127811 states and 163114 transitions. Second operand has 14 states, 14 states have (on average 21.571428571428573) internal successors, (302), 14 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:19:47,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:47,442 INFO L93 Difference]: Finished difference Result 298726 states and 380677 transitions. [2021-12-06 22:19:47,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:19:47,443 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 21.571428571428573) internal successors, (302), 14 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-12-06 22:19:47,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:47,715 INFO L225 Difference]: With dead ends: 298726 [2021-12-06 22:19:47,715 INFO L226 Difference]: Without dead ends: 171932 [2021-12-06 22:19:47,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-12-06 22:19:47,802 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 5388 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5388 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:47,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5388 Valid, 1149 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:19:47,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171932 states.