./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27463589-98c1-4af7-8b45-b0e877deab9b/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27463589-98c1-4af7-8b45-b0e877deab9b/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27463589-98c1-4af7-8b45-b0e877deab9b/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27463589-98c1-4af7-8b45-b0e877deab9b/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27463589-98c1-4af7-8b45-b0e877deab9b/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27463589-98c1-4af7-8b45-b0e877deab9b/bin/uautomizer-YU5uOKAj3y --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 f4332eab059a2e63fe2129905a86c0f1576ab7a248b3300f50ebbc0c52549386 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:52:30,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:52:30,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:52:30,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:52:30,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:52:30,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:52:30,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:52:30,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:52:30,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:52:30,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:52:30,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:52:30,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:52:30,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:52:30,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:52:30,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:52:30,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:52:30,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:52:30,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:52:30,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:52:30,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:52:30,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:52:30,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:52:30,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:52:30,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:52:30,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:52:30,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:52:30,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:52:30,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:52:30,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:52:30,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:52:30,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:52:30,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:52:30,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:52:30,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:52:30,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:52:30,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:52:30,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:52:30,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:52:30,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:52:30,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:52:30,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:52:30,863 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27463589-98c1-4af7-8b45-b0e877deab9b/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 17:52:30,917 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:52:30,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:52:30,918 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:52:30,918 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:52:30,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:52:30,927 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:52:30,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:52:30,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:52:30,928 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:52:30,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:52:30,929 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:52:30,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:52:30,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:52:30,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:52:30,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:52:30,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:52:30,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:52:30,931 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:52:30,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:52:30,931 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:52:30,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:52:30,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:52:30,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:52:30,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:52:30,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:52:30,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:52:30,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:52:30,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:52:30,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:52:30,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:52:30,934 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:52:30,935 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:52:30,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:52:30,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:52:30,935 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_27463589-98c1-4af7-8b45-b0e877deab9b/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27463589-98c1-4af7-8b45-b0e877deab9b/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4332eab059a2e63fe2129905a86c0f1576ab7a248b3300f50ebbc0c52549386 [2021-11-13 17:52:31,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:52:31,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:52:31,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:52:31,265 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:52:31,266 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:52:31,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27463589-98c1-4af7-8b45-b0e877deab9b/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-13 17:52:31,361 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27463589-98c1-4af7-8b45-b0e877deab9b/bin/uautomizer-YU5uOKAj3y/data/7ac5d64a7/a999a3406605490c8475e9631bc56a66/FLAG86d75ecc7 [2021-11-13 17:52:32,426 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:52:32,427 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27463589-98c1-4af7-8b45-b0e877deab9b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-13 17:52:32,535 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27463589-98c1-4af7-8b45-b0e877deab9b/bin/uautomizer-YU5uOKAj3y/data/7ac5d64a7/a999a3406605490c8475e9631bc56a66/FLAG86d75ecc7 [2021-11-13 17:52:32,794 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27463589-98c1-4af7-8b45-b0e877deab9b/bin/uautomizer-YU5uOKAj3y/data/7ac5d64a7/a999a3406605490c8475e9631bc56a66 [2021-11-13 17:52:32,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:52:32,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:52:32,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:52:32,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:52:32,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:52:32,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:52:32" (1/1) ... [2021-11-13 17:52:32,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e6c8abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:52:32, skipping insertion in model container [2021-11-13 17:52:32,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:52:32" (1/1) ... [2021-11-13 17:52:32,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:52:33,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:52:33,924 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27463589-98c1-4af7-8b45-b0e877deab9b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20004,20017] [2021-11-13 17:52:35,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:52:35,958 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:52:36,095 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27463589-98c1-4af7-8b45-b0e877deab9b/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20004,20017] [2021-11-13 17:52:37,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:52:37,528 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:52:37,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:52:37 WrapperNode [2021-11-13 17:52:37,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:52:37,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:52:37,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:52:37,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:52:37,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:52:37" (1/1) ... [2021-11-13 17:52:37,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:52:37" (1/1) ... [2021-11-13 17:52:38,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:52:38,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:52:38,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:52:38,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:52:38,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:52:37" (1/1) ... [2021-11-13 17:52:38,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:52:37" (1/1) ... [2021-11-13 17:52:38,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:52:37" (1/1) ... [2021-11-13 17:52:38,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:52:37" (1/1) ... [2021-11-13 17:52:38,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:52:37" (1/1) ... [2021-11-13 17:52:38,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:52:37" (1/1) ... [2021-11-13 17:52:38,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:52:37" (1/1) ... [2021-11-13 17:52:38,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:52:38,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:52:38,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:52:38,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:52:38,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:52:37" (1/1) ... [2021-11-13 17:52:38,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:52:38,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27463589-98c1-4af7-8b45-b0e877deab9b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:52:38,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27463589-98c1-4af7-8b45-b0e877deab9b/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:52:38,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27463589-98c1-4af7-8b45-b0e877deab9b/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:52:38,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:52:38,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:52:38,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:52:38,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:52:48,204 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:52:48,205 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 17:52:48,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:52:48 BoogieIcfgContainer [2021-11-13 17:52:48,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:52:48,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:52:48,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:52:48,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:52:48,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:52:32" (1/3) ... [2021-11-13 17:52:48,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3e497e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:52:48, skipping insertion in model container [2021-11-13 17:52:48,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:52:37" (2/3) ... [2021-11-13 17:52:48,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3e497e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:52:48, skipping insertion in model container [2021-11-13 17:52:48,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:52:48" (3/3) ... [2021-11-13 17:52:48,222 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-13 17:52:48,228 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:52:48,229 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:52:48,297 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:52:48,305 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 17:52:48,306 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:52:48,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 2875 states, 2873 states have (on average 1.9070657848938393) internal successors, (5479), 2874 states have internal predecessors, (5479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:52:48,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-13 17:52:48,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:48,434 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] [2021-11-13 17:52:48,435 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:52:48,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:48,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1826416770, now seen corresponding path program 1 times [2021-11-13 17:52:48,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:52:48,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591277108] [2021-11-13 17:52:48,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:52:48,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:52:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:49,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:49,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:52:49,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591277108] [2021-11-13 17:52:49,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591277108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:52:49,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:52:49,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:52:49,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595659429] [2021-11-13 17:52:49,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:52:49,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:52:49,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:52:49,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:52:49,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:52:49,268 INFO L87 Difference]: Start difference. First operand has 2875 states, 2873 states have (on average 1.9070657848938393) internal successors, (5479), 2874 states have internal predecessors, (5479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:52:51,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:52:51,690 INFO L93 Difference]: Finished difference Result 4287 states and 8058 transitions. [2021-11-13 17:52:51,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:52:51,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-13 17:52:51,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:52:51,778 INFO L225 Difference]: With dead ends: 4287 [2021-11-13 17:52:51,778 INFO L226 Difference]: Without dead ends: 2275 [2021-11-13 17:52:51,809 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 [2021-11-13 17:52:51,813 INFO L933 BasicCegarLoop]: 2669 mSDtfsCounter, 12315 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1552.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12315 SdHoareTripleChecker+Valid, 2934 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 63.92ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2011.50ms IncrementalHoareTripleChecker+Time [2021-11-13 17:52:51,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12315 Valid, 2934 Invalid, 1368 Unknown, 0 Unchecked, 63.92ms Time], IncrementalHoareTripleChecker [17 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 2011.50ms Time] [2021-11-13 17:52:51,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2021-11-13 17:52:52,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2273. [2021-11-13 17:52:52,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2272 states have (on average 1.3036971830985915) internal successors, (2962), 2272 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:52:52,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 2962 transitions. [2021-11-13 17:52:52,038 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 2962 transitions. Word has length 79 [2021-11-13 17:52:52,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:52:52,039 INFO L470 AbstractCegarLoop]: Abstraction has 2273 states and 2962 transitions. [2021-11-13 17:52:52,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:52:52,040 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 2962 transitions. [2021-11-13 17:52:52,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-13 17:52:52,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:52,049 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] [2021-11-13 17:52:52,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:52:52,050 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:52:52,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:52,051 INFO L85 PathProgramCache]: Analyzing trace with hash -827934042, now seen corresponding path program 1 times [2021-11-13 17:52:52,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:52:52,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471811182] [2021-11-13 17:52:52,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:52:52,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:52:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:52,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:52,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:52:52,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471811182] [2021-11-13 17:52:52,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471811182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:52:52,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:52:52,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:52:52,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945916156] [2021-11-13 17:52:52,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:52:52,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:52:52,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:52:52,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:52:52,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:52:52,363 INFO L87 Difference]: Start difference. First operand 2273 states and 2962 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:52:54,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:52:54,381 INFO L93 Difference]: Finished difference Result 3401 states and 4500 transitions. [2021-11-13 17:52:54,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:52:54,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-13 17:52:54,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:52:54,404 INFO L225 Difference]: With dead ends: 3401 [2021-11-13 17:52:54,404 INFO L226 Difference]: Without dead ends: 2325 [2021-11-13 17:52:54,416 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 [2021-11-13 17:52:54,419 INFO L933 BasicCegarLoop]: 1277 mSDtfsCounter, 6999 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1436.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6999 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.61ms SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1762.70ms IncrementalHoareTripleChecker+Time [2021-11-13 17:52:54,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6999 Valid, 1437 Invalid, 1274 Unknown, 0 Unchecked, 35.61ms Time], IncrementalHoareTripleChecker [197 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 1762.70ms Time] [2021-11-13 17:52:54,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2021-11-13 17:52:54,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 2323. [2021-11-13 17:52:54,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 2322 states have (on average 1.2833763996554695) internal successors, (2980), 2322 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:52:54,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 2980 transitions. [2021-11-13 17:52:54,576 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 2980 transitions. Word has length 80 [2021-11-13 17:52:54,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:52:54,579 INFO L470 AbstractCegarLoop]: Abstraction has 2323 states and 2980 transitions. [2021-11-13 17:52:54,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:52:54,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 2980 transitions. [2021-11-13 17:52:54,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-13 17:52:54,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:54,592 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] [2021-11-13 17:52:54,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:52:54,593 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:52:54,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:54,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1046816380, now seen corresponding path program 1 times [2021-11-13 17:52:54,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:52:54,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768752841] [2021-11-13 17:52:54,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:52:54,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:52:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:54,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:52:54,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768752841] [2021-11-13 17:52:54,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768752841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:52:54,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:52:54,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:52:54,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591834343] [2021-11-13 17:52:54,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:52:54,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:52:54,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:52:54,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:52:54,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:52:54,902 INFO L87 Difference]: Start difference. First operand 2323 states and 2980 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:52:56,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:52:56,377 INFO L93 Difference]: Finished difference Result 4267 states and 5722 transitions. [2021-11-13 17:52:56,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:52:56,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-13 17:52:56,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:52:56,401 INFO L225 Difference]: With dead ends: 4267 [2021-11-13 17:52:56,401 INFO L226 Difference]: Without dead ends: 2479 [2021-11-13 17:52:56,405 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 [2021-11-13 17:52:56,415 INFO L933 BasicCegarLoop]: 1046 mSDtfsCounter, 5688 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 956.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5688 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.73ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1183.83ms IncrementalHoareTripleChecker+Time [2021-11-13 17:52:56,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5688 Valid, 1263 Invalid, 809 Unknown, 0 Unchecked, 26.73ms Time], IncrementalHoareTripleChecker [18 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 1183.83ms Time] [2021-11-13 17:52:56,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2021-11-13 17:52:56,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2477. [2021-11-13 17:52:56,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2476 states have (on average 1.3546042003231018) internal successors, (3354), 2476 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:52:56,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 3354 transitions. [2021-11-13 17:52:56,675 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 3354 transitions. Word has length 80 [2021-11-13 17:52:56,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:52:56,675 INFO L470 AbstractCegarLoop]: Abstraction has 2477 states and 3354 transitions. [2021-11-13 17:52:56,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:52:56,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 3354 transitions. [2021-11-13 17:52:56,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-13 17:52:56,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:56,683 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] [2021-11-13 17:52:56,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:52:56,684 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:52:56,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:56,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1188468072, now seen corresponding path program 1 times [2021-11-13 17:52:56,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:52:56,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804625313] [2021-11-13 17:52:56,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:52:56,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:52:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:56,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:56,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:52:56,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804625313] [2021-11-13 17:52:56,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804625313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:52:56,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:52:56,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:52:56,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647063244] [2021-11-13 17:52:56,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:52:56,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:52:56,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:52:56,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:52:56,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:52:56,827 INFO L87 Difference]: Start difference. First operand 2477 states and 3354 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:52:57,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:52:57,038 INFO L93 Difference]: Finished difference Result 4757 states and 6608 transitions. [2021-11-13 17:52:57,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:52:57,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-13 17:52:57,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:52:57,065 INFO L225 Difference]: With dead ends: 4757 [2021-11-13 17:52:57,065 INFO L226 Difference]: Without dead ends: 3535 [2021-11-13 17:52:57,069 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 [2021-11-13 17:52:57,070 INFO L933 BasicCegarLoop]: 2277 mSDtfsCounter, 1446 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 3387 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.31ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.89ms IncrementalHoareTripleChecker+Time [2021-11-13 17:52:57,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1446 Valid, 3387 Invalid, 21 Unknown, 0 Unchecked, 8.31ms Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 40.89ms Time] [2021-11-13 17:52:57,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2021-11-13 17:52:57,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3529. [2021-11-13 17:52:57,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3529 states, 3528 states have (on average 1.344954648526077) internal successors, (4745), 3528 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:52:57,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4745 transitions. [2021-11-13 17:52:57,281 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4745 transitions. Word has length 81 [2021-11-13 17:52:57,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:52:57,282 INFO L470 AbstractCegarLoop]: Abstraction has 3529 states and 4745 transitions. [2021-11-13 17:52:57,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:52:57,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4745 transitions. [2021-11-13 17:52:57,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-13 17:52:57,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:57,291 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] [2021-11-13 17:52:57,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:52:57,292 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:52:57,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:57,292 INFO L85 PathProgramCache]: Analyzing trace with hash -861777195, now seen corresponding path program 1 times [2021-11-13 17:52:57,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:52:57,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216936713] [2021-11-13 17:52:57,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:52:57,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:52:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:57,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:57,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:52:57,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216936713] [2021-11-13 17:52:57,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216936713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:52:57,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:52:57,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:52:57,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626496256] [2021-11-13 17:52:57,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:52:57,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:52:57,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:52:57,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:52:57,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:52:57,418 INFO L87 Difference]: Start difference. First operand 3529 states and 4745 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:52:57,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:52:57,796 INFO L93 Difference]: Finished difference Result 6941 states and 9754 transitions. [2021-11-13 17:52:57,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:52:57,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-13 17:52:57,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:52:57,840 INFO L225 Difference]: With dead ends: 6941 [2021-11-13 17:52:57,841 INFO L226 Difference]: Without dead ends: 5113 [2021-11-13 17:52:57,849 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 [2021-11-13 17:52:57,856 INFO L933 BasicCegarLoop]: 1715 mSDtfsCounter, 884 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.46ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100.75ms IncrementalHoareTripleChecker+Time [2021-11-13 17:52:57,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 2829 Invalid, 65 Unknown, 0 Unchecked, 7.46ms Time], IncrementalHoareTripleChecker [31 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 100.75ms Time] [2021-11-13 17:52:57,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5113 states. [2021-11-13 17:52:58,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5113 to 5111. [2021-11-13 17:52:58,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5111 states, 5110 states have (on average 1.3749510763209394) internal successors, (7026), 5110 states have internal predecessors, (7026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:52:58,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5111 states to 5111 states and 7026 transitions. [2021-11-13 17:52:58,179 INFO L78 Accepts]: Start accepts. Automaton has 5111 states and 7026 transitions. Word has length 81 [2021-11-13 17:52:58,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:52:58,181 INFO L470 AbstractCegarLoop]: Abstraction has 5111 states and 7026 transitions. [2021-11-13 17:52:58,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:52:58,181 INFO L276 IsEmpty]: Start isEmpty. Operand 5111 states and 7026 transitions. [2021-11-13 17:52:58,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-13 17:52:58,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:58,205 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] [2021-11-13 17:52:58,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:52:58,206 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:52:58,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:58,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1403577995, now seen corresponding path program 1 times [2021-11-13 17:52:58,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:52:58,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552789217] [2021-11-13 17:52:58,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:52:58,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:52:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:58,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:58,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:52:58,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552789217] [2021-11-13 17:52:58,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552789217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:52:58,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:52:58,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:52:58,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070075545] [2021-11-13 17:52:58,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:52:58,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:52:58,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:52:58,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:52:58,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:52:58,398 INFO L87 Difference]: Start difference. First operand 5111 states and 7026 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:52:58,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:52:58,995 INFO L93 Difference]: Finished difference Result 9599 states and 13624 transitions. [2021-11-13 17:52:58,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:52:58,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-13 17:52:58,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:52:59,046 INFO L225 Difference]: With dead ends: 9599 [2021-11-13 17:52:59,046 INFO L226 Difference]: Without dead ends: 6958 [2021-11-13 17:52:59,053 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 [2021-11-13 17:52:59,054 INFO L933 BasicCegarLoop]: 1679 mSDtfsCounter, 921 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 189.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.69ms SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 234.69ms IncrementalHoareTripleChecker+Time [2021-11-13 17:52:59,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [921 Valid, 2706 Invalid, 165 Unknown, 0 Unchecked, 8.69ms Time], IncrementalHoareTripleChecker [81 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 234.69ms Time] [2021-11-13 17:52:59,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6958 states. [2021-11-13 17:52:59,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6958 to 6944. [2021-11-13 17:52:59,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6944 states, 6943 states have (on average 1.380671179605358) internal successors, (9586), 6943 states have internal predecessors, (9586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:52:59,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6944 states to 6944 states and 9586 transitions. [2021-11-13 17:52:59,668 INFO L78 Accepts]: Start accepts. Automaton has 6944 states and 9586 transitions. Word has length 81 [2021-11-13 17:52:59,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:52:59,669 INFO L470 AbstractCegarLoop]: Abstraction has 6944 states and 9586 transitions. [2021-11-13 17:52:59,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:52:59,669 INFO L276 IsEmpty]: Start isEmpty. Operand 6944 states and 9586 transitions. [2021-11-13 17:52:59,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-13 17:52:59,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:59,683 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] [2021-11-13 17:52:59,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 17:52:59,684 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:52:59,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:59,685 INFO L85 PathProgramCache]: Analyzing trace with hash 620531610, now seen corresponding path program 1 times [2021-11-13 17:52:59,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:52:59,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452979157] [2021-11-13 17:52:59,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:52:59,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:52:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:52:59,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:52:59,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452979157] [2021-11-13 17:52:59,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452979157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:52:59,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:52:59,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:52:59,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111329454] [2021-11-13 17:52:59,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:52:59,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:52:59,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:52:59,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:52:59,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:52:59,808 INFO L87 Difference]: Start difference. First operand 6944 states and 9586 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:00,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:53:00,417 INFO L93 Difference]: Finished difference Result 17401 states and 24430 transitions. [2021-11-13 17:53:00,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:53:00,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-13 17:53:00,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:53:00,495 INFO L225 Difference]: With dead ends: 17401 [2021-11-13 17:53:00,495 INFO L226 Difference]: Without dead ends: 11984 [2021-11-13 17:53:00,508 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 [2021-11-13 17:53:00,509 INFO L933 BasicCegarLoop]: 2295 mSDtfsCounter, 1454 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 3402 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.04ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.60ms IncrementalHoareTripleChecker+Time [2021-11-13 17:53:00,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1454 Valid, 3402 Invalid, 15 Unknown, 0 Unchecked, 9.04ms Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 35.60ms Time] [2021-11-13 17:53:00,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11984 states. [2021-11-13 17:53:01,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11984 to 11964. [2021-11-13 17:53:01,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11964 states, 11963 states have (on average 1.3820947922761848) internal successors, (16534), 11963 states have internal predecessors, (16534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:01,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11964 states to 11964 states and 16534 transitions. [2021-11-13 17:53:01,412 INFO L78 Accepts]: Start accepts. Automaton has 11964 states and 16534 transitions. Word has length 81 [2021-11-13 17:53:01,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:53:01,413 INFO L470 AbstractCegarLoop]: Abstraction has 11964 states and 16534 transitions. [2021-11-13 17:53:01,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:01,414 INFO L276 IsEmpty]: Start isEmpty. Operand 11964 states and 16534 transitions. [2021-11-13 17:53:01,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-13 17:53:01,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:53:01,437 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] [2021-11-13 17:53:01,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 17:53:01,437 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:53:01,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:53:01,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1891437418, now seen corresponding path program 1 times [2021-11-13 17:53:01,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:53:01,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963961900] [2021-11-13 17:53:01,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:01,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:53:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:01,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:53:01,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:53:01,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963961900] [2021-11-13 17:53:01,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963961900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:53:01,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:53:01,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:53:01,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164710439] [2021-11-13 17:53:01,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:53:01,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:53:01,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:53:01,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:53:01,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:53:01,633 INFO L87 Difference]: Start difference. First operand 11964 states and 16534 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:03,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:53:03,533 INFO L93 Difference]: Finished difference Result 25907 states and 36252 transitions. [2021-11-13 17:53:03,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:53:03,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-13 17:53:03,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:53:03,583 INFO L225 Difference]: With dead ends: 25907 [2021-11-13 17:53:03,583 INFO L226 Difference]: Without dead ends: 15207 [2021-11-13 17:53:03,604 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 [2021-11-13 17:53:03,605 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 4733 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 789.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4733 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.73ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 973.20ms IncrementalHoareTripleChecker+Time [2021-11-13 17:53:03,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4733 Valid, 1055 Invalid, 747 Unknown, 0 Unchecked, 19.73ms Time], IncrementalHoareTripleChecker [55 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 973.20ms Time] [2021-11-13 17:53:03,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15207 states. [2021-11-13 17:53:04,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15207 to 15169. [2021-11-13 17:53:04,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15169 states, 15168 states have (on average 1.3897020042194093) internal successors, (21079), 15168 states have internal predecessors, (21079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:04,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15169 states to 15169 states and 21079 transitions. [2021-11-13 17:53:04,881 INFO L78 Accepts]: Start accepts. Automaton has 15169 states and 21079 transitions. Word has length 81 [2021-11-13 17:53:04,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:53:04,881 INFO L470 AbstractCegarLoop]: Abstraction has 15169 states and 21079 transitions. [2021-11-13 17:53:04,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:04,882 INFO L276 IsEmpty]: Start isEmpty. Operand 15169 states and 21079 transitions. [2021-11-13 17:53:04,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-13 17:53:04,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:53:04,910 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] [2021-11-13 17:53:04,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 17:53:04,910 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:53:04,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:53:04,911 INFO L85 PathProgramCache]: Analyzing trace with hash 58995152, now seen corresponding path program 1 times [2021-11-13 17:53:04,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:53:04,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506111514] [2021-11-13 17:53:04,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:04,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:53:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:05,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:53:05,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:53:05,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506111514] [2021-11-13 17:53:05,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506111514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:53:05,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:53:05,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:53:05,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010140845] [2021-11-13 17:53:05,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:53:05,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:53:05,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:53:05,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:53:05,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:53:05,095 INFO L87 Difference]: Start difference. First operand 15169 states and 21079 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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) [2021-11-13 17:53:07,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:53:07,425 INFO L93 Difference]: Finished difference Result 39786 states and 56013 transitions. [2021-11-13 17:53:07,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:53:07,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 [2021-11-13 17:53:07,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:53:07,517 INFO L225 Difference]: With dead ends: 39786 [2021-11-13 17:53:07,517 INFO L226 Difference]: Without dead ends: 25296 [2021-11-13 17:53:07,549 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 [2021-11-13 17:53:07,550 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 4032 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 660.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4032 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.06ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 831.29ms IncrementalHoareTripleChecker+Time [2021-11-13 17:53:07,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4032 Valid, 919 Invalid, 617 Unknown, 0 Unchecked, 19.06ms Time], IncrementalHoareTripleChecker [28 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 831.29ms Time] [2021-11-13 17:53:07,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25296 states. [2021-11-13 17:53:09,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25296 to 25294. [2021-11-13 17:53:09,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25294 states, 25293 states have (on average 1.4033131696516823) internal successors, (35494), 25293 states have internal predecessors, (35494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:09,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25294 states to 25294 states and 35494 transitions. [2021-11-13 17:53:09,172 INFO L78 Accepts]: Start accepts. Automaton has 25294 states and 35494 transitions. Word has length 82 [2021-11-13 17:53:09,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:53:09,172 INFO L470 AbstractCegarLoop]: Abstraction has 25294 states and 35494 transitions. [2021-11-13 17:53:09,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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) [2021-11-13 17:53:09,173 INFO L276 IsEmpty]: Start isEmpty. Operand 25294 states and 35494 transitions. [2021-11-13 17:53:09,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 17:53:09,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:53:09,198 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] [2021-11-13 17:53:09,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 17:53:09,199 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:53:09,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:53:09,200 INFO L85 PathProgramCache]: Analyzing trace with hash 261572518, now seen corresponding path program 1 times [2021-11-13 17:53:09,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:53:09,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146313966] [2021-11-13 17:53:09,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:09,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:53:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:09,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:53:09,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:53:09,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146313966] [2021-11-13 17:53:09,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146313966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:53:09,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:53:09,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:53:09,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329852758] [2021-11-13 17:53:09,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:53:09,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:53:09,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:53:09,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:53:09,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:53:09,324 INFO L87 Difference]: Start difference. First operand 25294 states and 35494 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2021-11-13 17:53:10,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:53:10,865 INFO L93 Difference]: Finished difference Result 56418 states and 79527 transitions. [2021-11-13 17:53:10,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:53:10,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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 [2021-11-13 17:53:10,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:53:10,987 INFO L225 Difference]: With dead ends: 56418 [2021-11-13 17:53:10,987 INFO L226 Difference]: Without dead ends: 35280 [2021-11-13 17:53:11,026 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 [2021-11-13 17:53:11,027 INFO L933 BasicCegarLoop]: 1468 mSDtfsCounter, 891 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.08ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.68ms IncrementalHoareTripleChecker+Time [2021-11-13 17:53:11,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [891 Valid, 2315 Invalid, 33 Unknown, 0 Unchecked, 5.08ms Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 54.68ms Time] [2021-11-13 17:53:11,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35280 states. [2021-11-13 17:53:13,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35280 to 35170. [2021-11-13 17:53:13,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35170 states, 35169 states have (on average 1.3829793283857943) internal successors, (48638), 35169 states have internal predecessors, (48638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:13,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35170 states to 35170 states and 48638 transitions. [2021-11-13 17:53:13,616 INFO L78 Accepts]: Start accepts. Automaton has 35170 states and 48638 transitions. Word has length 83 [2021-11-13 17:53:13,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:53:13,616 INFO L470 AbstractCegarLoop]: Abstraction has 35170 states and 48638 transitions. [2021-11-13 17:53:13,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2021-11-13 17:53:13,616 INFO L276 IsEmpty]: Start isEmpty. Operand 35170 states and 48638 transitions. [2021-11-13 17:53:13,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 17:53:13,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:53:13,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:53:13,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 17:53:13,653 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:53:13,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:53:13,654 INFO L85 PathProgramCache]: Analyzing trace with hash 909961113, now seen corresponding path program 1 times [2021-11-13 17:53:13,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:53:13,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97421849] [2021-11-13 17:53:13,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:13,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:53:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:13,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:53:13,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:53:13,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97421849] [2021-11-13 17:53:13,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97421849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:53:13,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:53:13,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:53:13,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699386145] [2021-11-13 17:53:13,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:53:13,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:53:13,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:53:13,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:53:13,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:53:13,824 INFO L87 Difference]: Start difference. First operand 35170 states and 48638 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 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) [2021-11-13 17:53:22,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:53:22,514 INFO L93 Difference]: Finished difference Result 126396 states and 176739 transitions. [2021-11-13 17:53:22,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 17:53:22,515 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 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 [2021-11-13 17:53:22,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:53:22,970 INFO L225 Difference]: With dead ends: 126396 [2021-11-13 17:53:22,971 INFO L226 Difference]: Without dead ends: 109221 [2021-11-13 17:53:23,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-13 17:53:23,019 INFO L933 BasicCegarLoop]: 746 mSDtfsCounter, 6175 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1108.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6175 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.13ms SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1370.94ms IncrementalHoareTripleChecker+Time [2021-11-13 17:53:23,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6175 Valid, 1842 Invalid, 1487 Unknown, 0 Unchecked, 25.13ms Time], IncrementalHoareTripleChecker [397 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 1370.94ms Time] [2021-11-13 17:53:23,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109221 states. [2021-11-13 17:53:27,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109221 to 35226. [2021-11-13 17:53:27,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35226 states, 35225 states have (on average 1.3828246983676367) internal successors, (48710), 35225 states have internal predecessors, (48710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:27,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35226 states to 35226 states and 48710 transitions. [2021-11-13 17:53:27,401 INFO L78 Accepts]: Start accepts. Automaton has 35226 states and 48710 transitions. Word has length 84 [2021-11-13 17:53:27,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:53:27,402 INFO L470 AbstractCegarLoop]: Abstraction has 35226 states and 48710 transitions. [2021-11-13 17:53:27,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 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) [2021-11-13 17:53:27,402 INFO L276 IsEmpty]: Start isEmpty. Operand 35226 states and 48710 transitions. [2021-11-13 17:53:27,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 17:53:27,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:53:27,433 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] [2021-11-13 17:53:27,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 17:53:27,434 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:53:27,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:53:27,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1929393516, now seen corresponding path program 1 times [2021-11-13 17:53:27,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:53:27,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016644264] [2021-11-13 17:53:27,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:27,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:53:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:53:27,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:53:27,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016644264] [2021-11-13 17:53:27,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016644264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:53:27,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:53:27,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:53:27,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730275960] [2021-11-13 17:53:27,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:53:27,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:53:27,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:53:27,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:53:27,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:53:27,791 INFO L87 Difference]: Start difference. First operand 35226 states and 48710 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 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) [2021-11-13 17:53:40,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:53:40,466 INFO L93 Difference]: Finished difference Result 137749 states and 193191 transitions. [2021-11-13 17:53:40,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 17:53:40,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 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 [2021-11-13 17:53:40,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:53:40,776 INFO L225 Difference]: With dead ends: 137749 [2021-11-13 17:53:40,776 INFO L226 Difference]: Without dead ends: 122357 [2021-11-13 17:53:40,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-13 17:53:40,824 INFO L933 BasicCegarLoop]: 744 mSDtfsCounter, 5036 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1175.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5036 SdHoareTripleChecker+Valid, 1953 SdHoareTripleChecker+Invalid, 1938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.20ms SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1463.07ms IncrementalHoareTripleChecker+Time [2021-11-13 17:53:40,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5036 Valid, 1953 Invalid, 1938 Unknown, 0 Unchecked, 21.20ms Time], IncrementalHoareTripleChecker [434 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 1463.07ms Time] [2021-11-13 17:53:40,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122357 states. [2021-11-13 17:53:45,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122357 to 35449. [2021-11-13 17:53:45,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35449 states, 35448 states have (on average 1.382842473482284) internal successors, (49019), 35448 states have internal predecessors, (49019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:53:45,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35449 states to 35449 states and 49019 transitions. [2021-11-13 17:53:45,391 INFO L78 Accepts]: Start accepts. Automaton has 35449 states and 49019 transitions. Word has length 84 [2021-11-13 17:53:45,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:53:45,391 INFO L470 AbstractCegarLoop]: Abstraction has 35449 states and 49019 transitions. [2021-11-13 17:53:45,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 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) [2021-11-13 17:53:45,391 INFO L276 IsEmpty]: Start isEmpty. Operand 35449 states and 49019 transitions. [2021-11-13 17:53:45,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 17:53:45,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:53:45,410 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] [2021-11-13 17:53:45,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 17:53:45,411 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:53:45,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:53:45,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2043562398, now seen corresponding path program 1 times [2021-11-13 17:53:45,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:53:45,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217673092] [2021-11-13 17:53:45,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:45,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:53:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:45,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:53:45,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:53:45,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217673092] [2021-11-13 17:53:45,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217673092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:53:45,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:53:45,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:53:45,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546716256] [2021-11-13 17:53:45,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:53:45,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:53:45,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:53:45,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:53:45,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:53:45,592 INFO L87 Difference]: Start difference. First operand 35449 states and 49019 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 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)